Notebookcheck

Lenovo Yoga C930-13IKB (i5-8250U, FHD) Convertible Review

Sebastian Bade, 👁 Andreas Osthoff, Felicitas Krohn (translated by Martin Jungowski), 10/23/2018

Premium or just above average? For the first time ever Lenovo placed the speakers inside a convertible's hinges. The display supports Dolby Vision, and should thus offer additional value, at least on paper. Apart from this, the C930 is equipped with well-known hardware inside a good-looking case. Find out in our extensive review whether the C930 is worth considering.

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Lenovo’s Yoga C930 is a high-quality convertible sporting a brand-new speaker arrangement concept: it is the first convertible ever to mount the speakers inside its 360-degree hinge. In theory, this should make for a superb audio experience under all circumstances.

The Intel microprocessors should offer plenty of performance for everyday office and business use. Users have a choice between Intel’s Core i5-8250U and Core i7-8550U and 8 or 16 GB of RAM. The expensive (almost $2,000) top model comes with a 1 TB SSD and a 4K display by default.

Our review unit was equipped with the slower of the two processors, and sold for $1,400 at the time of writing. Our test will show whether it is worth the money. We are definitely looking forward to its innovative Dolby Vision display and other innovative features.

In our review, we have stacked the Yoga C930 against various competitors, both in-house and external. The following chart shows today’s line-up.

Lenovo Yoga 920 Lenovo Yoga 720 Asus ZenBook Flip 14 Fujitsu Stylistic Q738 HP Specrte x360 13
CPU Intel Core i7-8550U Intel Core i7-8550U Intel Core i5-8250U Intel Core i5-8350U Intel Core i7-8550U
GPU Intel UHD Graphics 620 Intel UHD Graphics 620 Intel UHD Graphics 620 Intel UHD Graphics 620 Intel UHD Graphics 620
Display 13.9-inch 1920 x 1080 (IPS) 13.3-inch 1920 x 1080 (IPS) 14-inch 1920 x 1080 (IPS) 13.3-inch 1920 x 1080 (IPS) 13.3-inch 1920 x 1080 (IPS)
RAM 8 GB DDR4 8 GB DDR4 8 GB DDR3 8 GB DDR3 16 GB DDR3
Storage 256 GB SSD (NVMe) 512 GB SSD 256 GB SSD 256 GB SSD (NVMe) 1024 GB SSD (NVMe
Rating 87% 87% 84% 77% 88%
Lenovo Yoga C930-13IKB (Yoga C930 Series)
Graphics adapter
Intel UHD Graphics 620, Core: 300 - 1100 MHz, Memory: 1200 MHz, 23.20.16.5037
Memory
8192 MB 
, DDR4-2400, dual-channel
Display
13.9 inch 16:9, 1920 x 1080 pixel 158 PPI, multitouch, native pen support, B139HAN03_0, IPS, glossy: yes
Mainboard
Intel Kaby Lake-U + iHDCP 2.2 Premium PCH
Storage
SK hynix PC401 HFS256GD9TNG, 256 GB 
, M.2-2280 NVMe-SSD , 211 GB free
Soundcard
Realtek Audio
Connections
1 USB 3.0 / 3.1 Gen1, 2 USB 3.1 Gen2, 2 Thunderbolt, 1 HDMI, 1 DisplayPort, Audio Connections: 3.5-mm headphone/microphone, 1 Fingerprint Reader, Brightness Sensor, Sensors: accelerometer
Networking
Intel Wireless-AC 9260 (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 14.9 x 322 x 227 ( = 0.59 x 12.68 x 8.94 in)
Battery
60 Wh, 7820 mAh Lithium-Ion
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: HD
Primary Camera: 1 MPix
Additional features
Speakers: Rotating Sound Bar with Dolby Atmos Speaker System, Keyboard: chiclet, Keyboard Light: yes, 65W USB Type-C power supply, Active Pen, Lenovo Utility, Lenovo Vantage, Microsoft Office Testversion, 24 Months Warranty
Weight
1.404 kg ( = 49.52 oz / 3.1 pounds), Power Supply: 356 g ( = 12.56 oz / 0.78 pounds)
Price
1499 EUR
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Case

The very sturdy and robust case is made of aluminum with the speakers located within the device’s 360-degree hinge. Lenovo first presented this feature at this year’s IFA. The surfaces are smooth and not only look but also feel very premium.

The Yoga C930 comes in two different colors: Iron Gray and Mica, which resembles a bright cream-colored tone.

Quality and rigidity are spot on. The case is very well made and flawless without major or uneven gaps. Even applying pressure to various points across the device was no problem at all. Base and display are very rigid, and the C930 successfully withstood our warping attempts. Display and base eventually gave in, but it required a substantial amount of force. The 360-degree hinge worked flawlessly and transformed the Yoga C930 into a full-fledged tablet in next to no time. Presentation and tent mode are also supported. For the most part, the hinges were stiff enough to prevent the display from teetering in laptop mode. Opening the device one-handed was not possible, though, since the hinge was a tad too stiff and the base a tad to lightweight.

All things considered we liked the C930’s case a lot. When handled it becomes instantly obvious that this is a high-quality premium convertible.

Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB
Lenovo Yoga C930-13IKB

Size Comparison

The C930’s footprint is almost identical to its predecessor, the Yoga 920: 32.2 x 22.7 cm (~12.7 x 8.9 inches). The HP Spectre x360 is a bit more compact thanks to its smaller display. The Fujitsu Stylistic is about the same size despite its smaller display. All devices are more or less on a par regarding weight, and 1.4 kg (~3.1 lb) are more than acceptable for a 14-inch convertible.

Connectivity

Connectivity is somewhat limited. Fortunately, both USB-C ports support Thunderbolt 3 and both can be used for charging the device (which also means that one of them will be used for power delivery most of the time). Despite its slim profile the device also features a full-sized USB 3.1 Type-A port, which was a very welcome connectivity feature.

By and large, connectivity remained identical to its predecessor, the Yoga 920. The C930 still lacked a card reader, which would have been a welcome addition.

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Left: USB 3.1, USB Type-C Gen. 2 (+ Thunderbolt 3), 3.5-mm audio jack
Left: USB 3.1, USB Type-C Gen. 2 (+ Thunderbolt 3), 3.5-mm audio jack
Right: power button
Right: power button
Front: no connectivity
Front: no connectivity
Rear: Active Pen, speakers
Rear: Active Pen, speakers

Communication

Wireless communication is handled by Intel’s Wireless-AC 9260 module with support for Bluetooth 4.2. In our benchmarks, the Yoga C930-13IKB managed an average data rate of 657 and 638 Mbps transmitting and receiving data, respectively. Compared to the Yoga 920 the C930 was up to 16% faster. All in all data transfer rates were very good. The notebook lacks an Ethernet port, and Lenovo did not consider including WWAN capabilities.

Wi-Fi modem
Wi-Fi modem
Wi-Fi antenna (right side)
Wi-Fi antenna (right side)
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Lenovo Yoga 920-13IKB-80Y7
Atheros/Qualcomm QCA6174
648 MBit/s ∼100% +2%
Lenovo Yoga C930-13IKB
Intel Wireless-AC 9260
638 (min: 401, max: 679) MBit/s ∼98%
Lenovo Yoga 720-13IKB
Intel Dual Band Wireless-AC 8265
532 MBit/s ∼82% -17%
Asus ZenBook Flip 14 UX461UA
Intel Dual Band Wireless-AC 8265
491 MBit/s ∼76% -23%
HP Spectre x360 13-ae048ng
Intel Dual Band Wireless-AC 8265
484 MBit/s ∼75% -24%
Average of class Convertible
  (38.3 - 678, n=118)
477 MBit/s ∼74% -25%
iperf3 Client (transmit) TCP 1 m 4M x10
Lenovo Yoga 720-13IKB
Intel Dual Band Wireless-AC 8265
676 MBit/s ∼100% +3%
Asus ZenBook Flip 14 UX461UA
Intel Dual Band Wireless-AC 8265
668 MBit/s ∼99% +2%
Lenovo Yoga C930-13IKB
Intel Wireless-AC 9260
657 (min: 602, max: 709) MBit/s ∼97%
HP Spectre x360 13-ae048ng
Intel Dual Band Wireless-AC 8265
655 MBit/s ∼97% 0%
Lenovo Yoga 920-13IKB-80Y7
Atheros/Qualcomm QCA6174
566 MBit/s ∼84% -14%
Average of class Convertible
  (39.2 - 685, n=118)
487 MBit/s ∼72% -26%

Security

fingerprint reader
fingerprint reader

The only security feature available is a fingerprint reader. It worked flawlessly and supported Windows Hello. The device lacks an infrared camera, and instead features a mechanical slider to cover the webcam.

Accessories

The only accessories included in the box are the 65 W power supply and various service and warranty booklets. The included Active Pen stylus can be found inside the C930’s case, which means it is easy to store and virtually instantly ready to use even when out and about. In addition, as soon as the Lenovo Active Pen is inserted into its slot its battery is charged.

Maintenance

The C930 lacks a dedicated maintenance opening, but given how easy it was to remove the bottom cover we were not particularly annoyed by that. Just make sure to have a spudger tool ready in order to prevent damage to the cover and the plastic clips around the rear.

Once the bottom cover is removed, one has access to both fans and the storage device. Incidentally, those are also the only two user-upgradeable parts.

Lenovo Yoga C930-13IKB without bottom cover
Lenovo Yoga C930-13IKB without bottom cover

Warranty

Devices sold in Europe come with a 2-year warranty by default whereas US customers are as usual limited to a 1-year depot or carry-in warranty. Warranty extensions are available, and price and availability depend on country of purchase.

Input Devices

Keyboard

Lenovo Yoga C930-13IKB keyboard
Lenovo Yoga C930-13IKB keyboard
Lenovo Yoga C930-13IKB keyboard (backlit)
Lenovo Yoga C930-13IKB keyboard (backlit)

The built-in 6-row chiclet keyboard is the same that can be found in the Lenovo IdeaPad 530s-14IKB. However, the power button at the top right is missing since Lenovo opted to relocate it to the right side of the device. A feature quite common for convertibles as the power button is often located next to the volume rocker. Accordingly, the Yoga C930’s keyboard has the same pros and cons as the IdeaPad 530s’s.

In terms of quality, the C930’s keyboard cannot compete with the higher quality ThinkPad keyboards. Nevertheless, it is good enough even for extended typing sessions. The concave keys are comfortably large and grippy, and well suited for avid typists. A two-stage white backlight is available, which allows for use in otherwise complete darkness. A rather short key travel is accompanied by a distinct accentuation point that could have been firmer.

At the end of the day the Yoga C930’s keyboard was more than just decent and certainly also looked the part.

Touchpad

Lenovo Yoga C930-13IKB touchpad
Lenovo Yoga C930-13IKB touchpad

The ClickPad’s color matched the overall design language of the device. At 10.6 x 7 cm (4.17 x 2.76 inches), it was large enough to allow for effortless multi-touch input. Its very responsive surface worked very well overall, however we have discovered areas around the edges that were somewhat inaccurate and slow to respond. We do not expect this to cause any problems in day-to-day use. The two integrated buttons are located at the bottom, and they make themselves noticeable with a very nice and full click. Overall we would say the ClickPad left a decent impression even though it was far from perfect. We certainly do not want to bad-mouth it but a premium device calls for premium input devices.

Touchscreen

Multi-touch display with Active Pen support
Multi-touch display with Active Pen support

The Yoga C930 is equipped with a 13.9-inch touchscreen. It worked perfectly well during our tests, and the included Lenovo Active Pen turned out to be a very welcome addition. All touch input, whether it was performed via finger or via stylus, was detected very quickly and dependably. We found no areas with reduced accuracy on our test sample.

Display

Subpixel-geometry
Subpixel-geometry
No clouding
No clouding

Our review unit was equipped with a 13.9-inch touchscreen display with a resolution of 1920 x 1080, and a resulting pixel density of 158 dpi. Alternatively, the Yoga C930 is also available with a 4K touchscreen for an extra $200 at the time of writing. Lenovo confirmed that both panels are Dolby Vision compatible despite the fact that the FHD panel is not detected as an HDR display (unlike the HDR panels in Lenovo’s ThinkPad X1).

Our review unit’s average display brightness was measured at 291 nits, and the display was the brightest within our test group. However, given that Lenovo advertises the display at 300 nits it turned out to be somewhat disappointing despite the fact that it did in fact reach more than 300 nits in the center. The contrast ratio of just 879:1 was courtesy of the high black level (0.36). The HP Spectre x360 boasted a much higher contrast ratio thanks to its significantly lower black level. Considering the C930’s high price the average brightness distribution of just 83 % was disappointing. Fortunately, we failed to notice any shadowing.

On a more positive note, we failed to detect any PWM and clouding in our review unit.

280
cd/m²
320
cd/m²
290
cd/m²
282
cd/m²
316
cd/m²
281
cd/m²
275
cd/m²
306
cd/m²
267
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 320 cd/m² Average: 290.8 cd/m² Minimum: 12.3 cd/m²
Brightness Distribution: 83 %
Center on Battery: 320 cd/m²
Contrast: 878:1 (Black: 0.36 cd/m²)
ΔE Color 5.9 | 0.4-29.43 Ø6.2, calibrated: 1.3
ΔE Greyscale 8.6 | 0.64-98 Ø6.5
94.5% sRGB (Argyll 3D) 60.7% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.1
Lenovo Yoga C930-13IKB
B139HAN03_0, IPS, 1920x1080, 13.9
Lenovo Yoga 920-13IKB-80Y7
AU Optronics B139HAN03.0, IPS, 1920x1080, 13.9
Lenovo Yoga 720-13IKB
BOE CQ NV133FHM-N61, IPS, 1920x1080, 13.3
Asus ZenBook Flip 14 UX461UA
BOE NV140FHM-N62, IPS, 1920x1080, 14
Fujitsu Stylistic Q738
Sharp SHP149B, IPS, 1920x1080, 13.3
HP Spectre x360 13-ae048ng
Chi Mei (CMN1376), IPS, 1920x1080, 13.3
Response Times
-14%
-23%
-14%
17%
7%
Response Time Grey 50% / Grey 80% *
40.8 (20.4, 20.4)
46 (20.8, 25.2)
-13%
48 (26, 22)
-18%
44 (24, 20)
-8%
35 (17, 18)
14%
36 (18, 18)
12%
Response Time Black / White *
27.6 (15.6, 12)
31.6 (18.4, 13.2)
-14%
35 (19, 16)
-27%
33 (19, 14)
-20%
22 (12, 10)
20%
27 (13, 14)
2%
PWM Frequency
350 (90)
200 (90)
208 (10)
25000 (40)
Screen
-0%
9%
0%
15%
23%
Brightness middle
316
297.9
-6%
297
-6%
302
-4%
292
-8%
311
-2%
Brightness
291
278
-4%
277
-5%
288
-1%
277
-5%
278
-4%
Brightness Distribution
83
81
-2%
87
5%
90
8%
90
8%
82
-1%
Black Level *
0.36
0.44
-22%
0.33
8%
0.57
-58%
0.32
11%
0.2
44%
Contrast
878
677
-23%
900
3%
530
-40%
913
4%
1555
77%
Colorchecker DeltaE2000 *
5.9
5.1
14%
4.93
16%
5.17
12%
3.69
37%
3.98
33%
Colorchecker DeltaE2000 max. *
12.9
11
15%
8.39
35%
7.68
40%
6.9
47%
8.48
34%
Colorchecker DeltaE2000 calibrated *
1.3
Greyscale DeltaE2000 *
8.6
6.7
22%
4.84
44%
3.26
62%
4.11
52%
5.57
35%
Gamma
2.1 105%
2.9 76%
2.5 88%
2.45 90%
2.3 96%
2.51 88%
CCT
6854 95%
6839 95%
6894 94%
7142 91%
7140 91%
7810 83%
Color Space (Percent of AdobeRGB 1998)
60.7
64.1
6%
58
-4%
55
-9%
63
4%
64
5%
Color Space (Percent of sRGB)
94.5
91.7
-3%
88
-7%
85
-10%
97
3%
99
5%
Total Average (Program / Settings)
-7% / -3%
-7% / 4%
-7% / -2%
16% / 16%
15% / 20%

* ... smaller is better

Lenovo Yoga C930-13IKB vs. sRGB (94.5%)
Lenovo Yoga C930-13IKB vs. sRGB (94.5%)
Lenovo Yoga C930-13IKB vs. AdobeRGB (60.7%)
Lenovo Yoga C930-13IKB vs. AdobeRGB (60.7%)

Overall image quality turned out to be quite decent despite the mediocre contrast ratio. The image was crisp and colors were neither flashy nor washed out. Unfortunately, Lenovo failed to calibrate the C930’s display ex factory, which resulted in unusually high DeltaE deviations of 8.6 (grayscale) and 5.9 (colors). Ideally, we want these to be less than three. Post calibration we were able to reduce these dramatically, however we should also note that display brightness suffered from our calibration process and we were only able to measure 250 nits afterwards. If you intend to use the device primarily outdoors, we recommend not using our ICC profile. Everybody else is going to profit immensely from it, though.

Color space coverage was decent (94.5% sRGB, 60.7% AdobeRGB), however the HP Spectre x360 and the Fujitsu Stylistic Q738 were even slightly better. Nevertheless, the display is not going to stand in the way of semi-professional photo-editing ambitions.

CalMAN: grayscale (uncalibrated)
CalMAN: grayscale (uncalibrated)
CalMAN: ColorChecker (uncalibrated)
CalMAN: ColorChecker (uncalibrated)
CalMAN: saturation (uncalibrated)
CalMAN: saturation (uncalibrated)
CalMAN: grayscale (calibrated)
CalMAN: grayscale (calibrated)
CalMAN: ColorChecker (calibrated)
CalMAN: ColorChecker (calibrated)
CalMAN: saturation (calibrated)
CalMAN: saturation (calibrated)

Due to its reflective coating and its average brightness of just 291 nits, the Yoga C930 was not ideal for outdoor use. As noted before we recommend against using our ICC profile if you have to use it outdoors on a regular basis because the average maximum brightness decreased even further to just 250 nits as part of the calibration process.

Lenovo Yoga C930 in direct sunlight
Lenovo Yoga C930 in direct sunlight
Lenovo Yoga C930 in the shade
Lenovo Yoga C930 in the shade

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
27.6 ms ... rise ↗ and fall ↘ combined↗ 15.6 ms rise
↘ 12 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 58 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (25.6 ms).
       Response Time 50% Grey to 80% Grey
40.8 ms ... rise ↗ and fall ↘ combined↗ 20.4 ms rise
↘ 20.4 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 48 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (41 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM not detected

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8933 (minimum: 43 - maximum: 142900) Hz was measured.

Viewing angles were definitely one of the IPS panel’s strong points. Our test image was nearly identical without any noticeable distortions from all angles.

Lenovo Yoga C930-13IKB viewing angles
Lenovo Yoga C930-13IKB viewing angles

Performance

Our review unit was the current base model and featured an Intel Core i5-8250U paired with 8 GB of DDR4-RAM and a 256 GB SSD. Optional upgrades include a Core i7-8550U, up to 16 GB of RAM, and up to 2 TB of storage space. The FHD display can be swapped for a 4K unit with touch support and a slightly reduced battery life. Overall, the system seems to be well balanced. LatencyMon failed to detect any latencies.

CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
HWiNFO
DPC latencies
Intel Extreme Utility
Intel Extreme Utility (Benchmark)
 

Processor

Intel Core i5-8250U
Intel Core i5-8250U

Intel’s Core i5-8250U is a very efficient quad-core CPU running at a base clock speed of 1.6 GHz and a turbo boost of up to 3.4 GHz. It performed admirably during our tests, and was capable of utilizing its turbo boost potential very well. While it fell short of achieving the Yoga 920’s single-core performance (no wonder considering the 920’s Core i7-8550U CPU) it delivered a very solid multi-core performance and outperformed all other devices by up to 6%.

Additional Core i5-8250U benchmarks can be found here.

Cinebench R15
CPU Single 64Bit
Lenovo Yoga 920-13IKB-80Y7
Intel Core i7-8550U
170 Points ∼100% +17%
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
145 Points ∼85%
HP Spectre x360 13-ae048ng
Intel Core i7-8550U
144 Points ∼85% -1%
Asus ZenBook Flip 14 UX461UA
Intel Core i5-8250U
144 Points ∼85% -1%
Average Intel Core i5-8250U
  (81 - 147, n=86)
141 Points ∼83% -3%
Fujitsu Stylistic Q738
Intel Core i5-8350U
128 Points ∼75% -12%
Lenovo Yoga 720-13IKB
Intel Core i7-8550U
109 Points ∼64% -25%
Average of class Convertible
  (19 - 177, n=274)
102 Points ∼60% -30%
CPU Multi 64Bit
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
613 Points ∼100%
Lenovo Yoga 920-13IKB-80Y7
Intel Core i7-8550U
576 Points ∼94% -6%
Average Intel Core i5-8250U
  (320 - 730, n=89)
567 Points ∼92% -8%
Asus ZenBook Flip 14 UX461UA
Intel Core i5-8250U
558 Points ∼91% -9%
HP Spectre x360 13-ae048ng
Intel Core i7-8550U
501 Points ∼82% -18%
Lenovo Yoga 720-13IKB
Intel Core i7-8550U
407 Points ∼66% -34%
Fujitsu Stylistic Q738
Intel Core i5-8350U
332 Points ∼54% -46%
Average of class Convertible
  (33 - 761, n=280)
279 Points ∼46% -54%
Cinebench R11.5
CPU Single 64Bit
Lenovo Yoga 920-13IKB-80Y7
Intel Core i7-8550U
1.91 Points ∼100% +16%
Asus ZenBook Flip 14 UX461UA
Intel Core i5-8250U
1.65 Points ∼86% +1%
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
1.64 Points ∼86%
Average Intel Core i5-8250U
  (0.91 - 1.79, n=33)
1.614 Points ∼85% -2%
Average of class Convertible
  (0.24 - 2.01, n=212)
1.108 Points ∼58% -32%
CPU Multi 64Bit
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
6.05 Points ∼100%
Average Intel Core i5-8250U
  (3.15 - 7.76, n=33)
6.02 Points ∼100% 0%
Lenovo Yoga 920-13IKB-80Y7
Intel Core i7-8550U
5.94 Points ∼98% -2%
Asus ZenBook Flip 14 UX461UA
Intel Core i5-8250U
5.93 Points ∼98% -2%
Average of class Convertible
  (0.45 - 8.56, n=221)
2.77 Points ∼46% -54%
Cinebench R10
Rendering Single CPUs 64Bit
Average Intel Core i5-8250U
  (5163 - 8153, n=12)
6956 Points ∼100% +16%
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
6011 Points ∼86%
Average of class Convertible
  (919 - 8397, n=117)
4478 Points ∼64% -26%
Rendering Multiple CPUs 64Bit
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
23768 Points ∼100%
Average Intel Core i5-8250U
  (11245 - 28932, n=12)
23541 Points ∼99% -1%
Average of class Convertible
  (1689 - 31667, n=116)
9514 Points ∼40% -60%
JetStream 1.1 - 1.1 Total Score
Lenovo Yoga 920-13IKB-80Y7
Intel Core i7-8550U
288.2 Points ∼100% +33%
HP Spectre x360 13-ae048ng
Intel Core i7-8550U
244.3 Points ∼85% +13%
Asus ZenBook Flip 14 UX461UA
Intel Core i5-8250U
221.09 Points ∼77% +2%
Average Intel Core i5-8250U
  (155 - 256, n=71)
217 Points ∼75% 0%
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
215.94 Points ∼75%
Lenovo Yoga 720-13IKB
Intel Core i7-8550U
200.09 Points ∼69% -7%
Fujitsu Stylistic Q738
Intel Core i5-8350U
181.1 Points ∼63% -16%
Average of class Convertible
  (33.5 - 288, n=151)
167 Points ∼58% -23%
Octane V2 - Total Score
Average Intel Core i5-8250U
  (22772 - 35817, n=46)
30320 Points ∼100% +8%
Asus ZenBook Flip 14 UX461UA
Intel Core i5-8250U
30111 Points ∼99% +7%
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
28198 Points ∼93%
Average of class Convertible
  (3067 - 42822, n=159)
21013 Points ∼69% -25%
Mozilla Kraken 1.1 - Total Score
Average of class Convertible
  (809 - 9177, n=168)
2573 ms * ∼100% -95%
Lenovo Yoga C930-13IKB
Intel Core i5-8250U
1321.2 ms * ∼51%
Asus ZenBook Flip 14 UX461UA
Intel Core i5-8250U
1238.3 ms * ∼48% +6%
Average Intel Core i5-8250U
  (986 - 1410, n=47)
1212 ms * ∼47% +8%
HP Spectre x360 13-ae048ng
Intel Core i7-8550U
946.5 ms * ∼37% +28%

* ... smaller is better

Cinebench R10
Cinebench R10
Cinebench R11.5
Cinebench R11.5
Cinebench R15
Cinebench R15
Jetstream 1.1
Jetstream 1.1
Octane V2
Octane V2
Mozilla Kraken 1.1
Mozilla Kraken 1.1

We run the Cinebench R15 multi-thread test in a loop to determine a device’s sustained load capabilities. As can be seen on the diagram below, this high level of initial performance cannot be maintained for very long. The second iteration yielded a significantly reduced result already, and this trend continued until the scores bottomed out at around 480 points. This translates to a 20% overall decrease.

0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540550560570580590600610620Tooltip
Cinebench R15 CPU Multi 64 Bit
Cinebench R10 Shading 32Bit
5525
Cinebench R10 Rendering Single CPUs 64Bit
6011 Points
Cinebench R10 Rendering Multiple CPUs 64Bit
23768 Points
Cinebench R10 Shading 64Bit
7164 Points
Cinebench R10 Rendering Single 32Bit
5641
Cinebench R10 Rendering Multiple CPUs 32Bit
18579
Cinebench R11.5 CPU Multi 32Bit
5.69 Points
Cinebench R11.5 OpenGL 32Bit
48.23 fps
Cinebench R11.5 CPU Single 64Bit
1.64 Points
Cinebench R11.5 CPU Multi 64Bit
6.05 Points
Cinebench R11.5 OpenGL 64Bit
48.45 fps
Cinebench R11.5 CPU Single 32Bit
1.47 Points
Cinebench R15 CPU Single 64Bit
145 Points
Cinebench R15 Ref. Match 64Bit
97.8 %
Cinebench R15 OpenGL 64Bit
55.06 fps
Cinebench R15 CPU Multi 64Bit
613 Points
Help

System Performance

The Yoga C930-13IKB’s system performance was more than adequate. Not only is it well suited for office work, it also performed very well when watching movies or editing photos. At no point during our tests did we get the impression of a slow or even sluggish device. Accordingly, it performed very well in our synthetic PCMark benchmarks, with a respectable score in the top third in PCMark 8 and a mediocre result in PCMark 10. Overall, it performed slightly above average for its class.

PCMark 8 Home
PCMark 8 Home
PCMark 8 Creative
PCMark 8 Creative
PCMark 8 Work
PCMark 8 Work
PCMark 8 Storage
PCMark 8 Storage
PCMark 10
PCMark 10
PCMark 8
Work Score Accelerated v2
Lenovo Yoga 920-13IKB-80Y7
UHD Graphics 620, 8550U, Samsung PM961 MZVLW256HEHP
5154 Points ∼100% +6%
Lenovo Yoga C930-13IKB
UHD Graphics 620, 8250U, SK hynix PC401 HFS256GD9TNG
4854 Points ∼94%
Asus ZenBook Flip 14 UX461UA
UHD Graphics 620, 8250U, SanDisk SD8SN8U256G1002
4700 Points ∼91% -3%
Lenovo Yoga 720-13IKB
UHD Graphics 620, 8550U, Toshiba XG4 NVMe (THNSN5512GPUK)
4685 Points ∼91% -3%
Average Intel Core i5-8250U, Intel UHD Graphics 620
  (2699 - 5106, n=50)
4651 Points ∼90% -4%
HP Spectre x360 13-ae048ng
UHD Graphics 620, 8550U, Toshiba NVMe THNSN51T02DUK
4463 Points ∼87% -8%
Average of class Convertible
  (1007 - 5281, n=203)
3662 Points ∼71% -25%
Home Score Accelerated v2
Lenovo Yoga 920-13IKB-80Y7
UHD Graphics 620, 8550U, Samsung PM961 MZVLW256HEHP
3999 Points ∼100% +6%
Lenovo Yoga 720-13IKB
UHD Graphics 620, 8550U, Toshiba XG4 NVMe (THNSN5512GPUK)
3815 Points ∼95% +1%
Lenovo Yoga C930-13IKB
UHD Graphics 620, 8250U, SK hynix PC401 HFS256GD9TNG
3774 Points ∼94%
Asus ZenBook Flip 14 UX461UA
UHD Graphics 620, 8250U, SanDisk SD8SN8U256G1002
3660 Points ∼92% -3%
HP Spectre x360 13-ae048ng
UHD Graphics 620, 8550U, Toshiba NVMe THNSN51T02DUK
3605 Points ∼90% -4%
Average Intel Core i5-8250U, Intel UHD Graphics 620
  (2986 - 4458, n=61)
3592 Points ∼90% -5%
Fujitsu Stylistic Q738
UHD Graphics 620, 8350U, Samsung SSD PM871b MZNLN256HAJQ
3063 Points ∼77% -19%
Average of class Convertible
  (741 - 4741, n=250)
2743 Points ∼69% -27%
PCMark 10
Productivity
Lenovo Yoga 920-13IKB-80Y7
UHD Graphics 620, 8550U, Samsung PM961 MZVLW256HEHP
6812 Points ∼100% +19%
Asus ZenBook Flip 14 UX461UA
UHD Graphics 620, 8250U, SanDisk SD8SN8U256G1002
5830 Points ∼86% +2%
Lenovo Yoga C930-13IKB
UHD Graphics 620, 8250U, SK hynix PC401 HFS256GD9TNG
5715 Points ∼84%
Average Intel Core i5-8250U, Intel UHD Graphics 620
  (3851 - 6653, n=57)
5715 Points ∼84% 0%
Lenovo Yoga 720-13IKB
UHD Graphics 620, 8550U, Toshiba XG4 NVMe (THNSN5512GPUK)
5485 Points ∼81% -4%
Average of class Convertible
  (1162 - 7045, n=72)
5108 Points ∼75% -11%
Fujitsu Stylistic Q738
UHD Graphics 620, 8350U, Samsung SSD PM871b MZNLN256HAJQ
5004 Points ∼73% -12%
Essentials
Lenovo Yoga 920-13IKB-80Y7
UHD Graphics 620, 8550U, Samsung PM961 MZVLW256HEHP
8660 Points ∼100% +4%
Lenovo Yoga C930-13IKB
UHD Graphics 620, 8250U, SK hynix PC401 HFS256GD9TNG
8355 Points ∼96%
Average Intel Core i5-8250U, Intel UHD Graphics 620
  (5855 - 9289, n=57)
7376 Points ∼85% -12%
Asus ZenBook Flip 14 UX461UA
UHD Graphics 620, 8250U, SanDisk SD8SN8U256G1002
7124 Points ∼82% -15%
Lenovo Yoga 720-13IKB
UHD Graphics 620, 8550U, Toshiba XG4 NVMe (THNSN5512GPUK)
6995 Points ∼81% -16%
Fujitsu Stylistic Q738
UHD Graphics 620, 8350U, Samsung SSD PM871b MZNLN256HAJQ
6994 Points ∼81% -16%
Average of class Convertible
  (2489 - 9291, n=72)
6781 Points ∼78% -19%
Score
Lenovo Yoga 920-13IKB-80Y7
UHD Graphics 620, 8550U, Samsung PM961 MZVLW256HEHP
4012 Points ∼100% +54%
Asus ZenBook Flip 14 UX461UA
UHD Graphics 620, 8250U, SanDisk SD8SN8U256G1002
3473 Points ∼87% +33%
Lenovo Yoga 720-13IKB
UHD Graphics 620, 8550U, Toshiba XG4 NVMe (THNSN5512GPUK)
3260 Points ∼81% +25%
Average Intel Core i5-8250U, Intel UHD Graphics 620
  (3407 - 4081, n=57)
3251 Points ∼81% +25%
Average of class Convertible
  (1006 - 4347, n=73)
3081 Points ∼77% +18%
Fujitsu Stylistic Q738
UHD Graphics 620, 8350U, Samsung SSD PM871b MZNLN256HAJQ
3004 Points ∼75% +15%
Lenovo Yoga C930-13IKB
UHD Graphics 620, 8250U, SK hynix PC401 HFS256GD9TNG
2603 Points ∼65%
PCMark 8 Home Score Accelerated v2
3774 points
PCMark 8 Creative Score Accelerated v2
4742 points
PCMark 8 Work Score Accelerated v2
4854 points
Help

Storage Devices

256 GB SK Hynix SSD (M.2 2280)
256 GB SK Hynix SSD (M.2 2280)

Our review unit was equipped with a decently fast 256 GB NVMe SSD manufactured by SK Hynix. Its sequential read performance of 1,850 MB/s were up to par for a PCIe device, however it failed to meet our expectations when it came to sequential write performance (661 MB/s). Lenovo’s Yoga 920, which was equipped with a Samsung SSD, performed significantly better.

Nevertheless, the SSD is certainly not going to become the bottleneck. Its 4K read speed of 38 MB/s was very good, and helped to improve boot and application launch times. The Yoga C930 can be fitted with SSDs of up to 2 TB, but the convertible does not feature a secondary storage bay or slot.

AS SSD
AS SSD
CDM 3
CDM 3
CDM 5
CDM 5
CDM 6
CDM 6
CDI
CDI
Lenovo Yoga C930-13IKB
SK hynix PC401 HFS256GD9TNG
Lenovo Yoga 920-13IKB-80Y7
Samsung PM961 MZVLW256HEHP
Lenovo Yoga 720-13IKB
Toshiba XG4 NVMe (THNSN5512GPUK)
Asus ZenBook Flip 14 UX461UA
SanDisk SD8SN8U256G1002
Fujitsu Stylistic Q738
Samsung SSD PM871b MZNLN256HAJQ
HP Spectre x360 13-ae048ng
Toshiba NVMe THNSN51T02DUK
CrystalDiskMark 3.0
86%
32%
-29%
-33%
43%
Write 4k QD32
290.8
573.1
97%
337.5
16%
179.6
-38%
247.6
-15%
437.3
50%
Read 4k QD32
246.3
432.9
76%
416.4
69%
285.7
16%
198.8
-19%
541.6
120%
Write 4k
84.59
142.4
68%
127.1
50%
52.51
-38%
70.39
-17%
138.1
63%
Read 4k
36.88
56.16
52%
38.42
4%
28.74
-22%
20.37
-45%
45.99
25%
Write 512
330.7
831.5
151%
546.5
65%
302.7
-8%
265.6
-20%
575
74%
Read 512
796.5
1252
57%
1041
31%
290.2
-64%
297.8
-63%
619.9
-22%
Write Seq
452.8
1125
148%
568.9
26%
435.6
-4%
387.3
-14%
776.3
71%
Read Seq
1480
2070
40%
1345
-9%
414.1
-72%
423.6
-71%
918.5
-38%
SK hynix PC401 HFS256GD9TNG
Sequential Read: 1480 MB/s
Sequential Write: 452.8 MB/s
512K Read: 796.5 MB/s
512K Write: 330.7 MB/s
4K Read: 36.88 MB/s
4K Write: 84.59 MB/s
4K QD32 Read: 246.3 MB/s
4K QD32 Write: 290.8 MB/s

GPU Performance

The Yoga C930-13IKB does not feature a dedicated GPU, and is thus limited to Intel’s integrated UHD Graphics 620 GPU. Lenovo does not offer dedicated GPUs as optional upgrades for this device.

In our 3DMark benchmarks, our review unit managed to outperform the entire competition. The differences between first, second, and third place were only minor. However, the HP Spectre x360 was trailing behind significantly.

Thanks to support for Main10 H.265/HEVC at 10-bit color depth and Google’s VP9 codec the integrated GPU is capable of decoding these in hardware, which is not only very energy efficient but also results in smooth and enjoyable high-resolution video playback.

Additional UHD Graphics 620 benchmarks can be found here.

3DMark
1920x1080 Fire Strike Graphics
Lenovo Yoga C930-13IKB
Intel UHD Graphics 620, Intel Core i5-8250U
1216 Points ∼100%
Asus ZenBook Flip 14 UX461UA
Intel UHD Graphics 620, Intel Core i5-8250U
1180 Points ∼97% -3%
Lenovo Yoga 920-13IKB-80Y7
Intel UHD Graphics 620, Intel Core i7-8550U
1150 Points ∼95% -5%
Lenovo Yoga 720-13IKB
Intel UHD Graphics 620, Intel Core i7-8550U
1112 Points ∼91% -9%
Average Intel UHD Graphics 620
  (557 - 1336, n=84)
1083 Points ∼89% -11%
HP Spectre x360 13-ae048ng
Intel UHD Graphics 620, Intel Core i7-8550U
1047 Points ∼86% -14%
Average of class Convertible
  (132 - 5965, n=213)
953 Points ∼78% -22%
1280x720 Cloud Gate Standard Graphics
Lenovo Yoga C930-13IKB
Intel UHD Graphics 620, Intel Core i5-8250U
10003 Points ∼100%
Lenovo Yoga 920-13IKB-80Y7
Intel UHD Graphics 620, Intel Core i7-8550U
9678 Points ∼97% -3%
Lenovo Yoga 720-13IKB
Intel UHD Graphics 620, Intel Core i7-8550U
9252 Points ∼92% -8%
Asus ZenBook Flip 14 UX461UA
Intel UHD Graphics 620, Intel Core i5-8250U
9214 Points ∼92% -8%
Average Intel UHD Graphics 620
  (6910 - 11294, n=93)
8858 Points ∼89% -11%
HP Spectre x360 13-ae048ng
Intel UHD Graphics 620, Intel Core i7-8550U
8600 Points ∼86% -14%
Average of class Convertible
  (1023 - 37388, n=263)
6408 Points ∼64% -36%
3DMark 11 - 1280x720 Performance GPU
Lenovo Yoga 720-13IKB
Intel UHD Graphics 620, Intel Core i7-8550U
1765 Points ∼100% +2%
Asus ZenBook Flip 14 UX461UA
Intel UHD Graphics 620, Intel Core i5-8250U
1764 Points ∼100% +2%
Lenovo Yoga C930-13IKB
Intel UHD Graphics 620, Intel Core i5-8250U
1734 Points ∼98%
Lenovo Yoga 920-13IKB-80Y7
Intel UHD Graphics 620, Intel Core i7-8550U
1709 Points ∼97% -1%
Average Intel UHD Graphics 620
  (1235 - 1979, n=104)
1680 Points ∼95% -3%
HP Spectre x360 13-ae048ng
Intel UHD Graphics 620, Intel Core i7-8550U
1497 Points ∼85% -14%
Fujitsu Stylistic Q738
Intel UHD Graphics 620, Intel Core i5-8350U
1235 Points ∼70% -29%
Average of class Convertible
  (173 - 7483, n=301)
1176 Points ∼67% -32%
3DMark 11 Performance
1910 points
3DMark Ice Storm Standard Score
78316 points
3DMark Cloud Gate Standard Score
8870 points
3DMark Fire Strike Score
1112 points
3DMark Fire Strike Extreme Score
521 points
3DMark Time Spy Score
400 points
Help

Gaming Performance

Since the Yoga C930 lacks a dedicated graphics card, its gaming performance was nothing to write home about. Older and less demanding games ran fine in low resolutions and reduced settings. Newer games are a no-go, and if those are on your agenda the C930 is not the right device for you.

Additional benchmarks can be found on our benchmark charts.

low med. high ultra
BioShock Infinite (2013) 68.730.826.19.1fps
Battlefield 4 (2013) 43.530.921.97.3fps
Rise of the Tomb Raider (2016) 18.412.25.54.2fps

Emissions

System Noise

Despite its two fans the C930 turned out to be pleasantly quiet. It was even completely silent when idle. Under maximum load the fans ramped up and produced a very quiet 32.7 dB(A) - the quietest device in our test group. Medium load resulted in a slightly reduced fan noise of 31.8 dB(A), which was on a par with the Asus ZenBook Flip 14's 31.7 dB(A).

Subjectively, the fan noise profile felt louder than it was due to its comparatively high frequency spectrum. Fortunately, it remained unobtrusive by and large. Reducing and increasing fan speed was very well and deliberately managed, and the fans did not pulsate at all.

Lenovo Yoga C930-13IKB cooler
Lenovo Yoga C930-13IKB cooler
Left fan
Left fan
Right fan
Right fan

Noise Level

Idle
29.3 / 29.3 / 29.7 dB(A)
Load
31.8 / 32.7 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm distance)   environment noise: 29.3 dB(A)
Lenovo Yoga C930-13IKB
UHD Graphics 620, 8250U, SK hynix PC401 HFS256GD9TNG
Lenovo Yoga 920-13IKB-80Y7
UHD Graphics 620, 8550U, Samsung PM961 MZVLW256HEHP
Lenovo Yoga 720-13IKB
UHD Graphics 620, 8550U, Toshiba XG4 NVMe (THNSN5512GPUK)
Asus ZenBook Flip 14 UX461UA
UHD Graphics 620, 8250U, SanDisk SD8SN8U256G1002
Fujitsu Stylistic Q738
UHD Graphics 620, 8350U, Samsung SSD PM871b MZNLN256HAJQ
HP Spectre x360 13-ae048ng
UHD Graphics 620, 8550U, Toshiba NVMe THNSN51T02DUK
Noise
-1%
-4%
-5%
-4%
-3%
off / environment *
29.3
28
4%
30.5
-4%
30.4
-4%
30.5
-4%
30.13
-3%
Idle Minimum *
29.3
28
4%
30.5
-4%
30.4
-4%
30.5
-4%
30.13
-3%
Idle Average *
29.3
28.8
2%
30.5
-4%
30.4
-4%
30.5
-4%
30
-2%
Idle Maximum *
29.7
30.3
-2%
30.5
-3%
32
-8%
30.5
-3%
30.13
-1%
Load Average *
31.8
34.5
-8%
32.8
-3%
31.7
-0%
33.3
-5%
33.4
-5%
Load Maximum *
32.7
34.3
-5%
34.7
-6%
35.9
-10%
33.6
-3%
33
-1%

* ... smaller is better

Temperature

3DMark 11 immediately following our stress test
3DMark 11 immediately following our stress test

Surface temperatures were unobtrusive as well, and we found a single hot spot of just 41.8 °C (107 °F) at the bottom of the base. It was also the only spot that exceeded the 40 °C (104 °F) threshold, which means using the device on your lap should not become uncomfortable.

We already determined that the Intel Core i5-8250U's performance decreases after a while during our Cinebench R15 benchmarks, and running our stress test offered an explanation for this behavior. Shortly after starting Prime95 temperatures reached a critical level, which resulted in a reduced core frequency. The CPU did reach its theoretical maximum of 3.4 GHz for a short period of time but eventually settled at its base clock speed of 1.6 GHz, resulting in a temperature of 71 °C (160 °F) and a power consumption of just 11 W. In other words: sustained load is too much for the C930’s cooling solution despite its two fans.

Stressing both, CPU and GPU, at the same time yielded very similar results. Given that they have to share the system’s combined TDP the CPU had to clock down to just 800 MHz. Intel’s UHD Graphics 620 ran at 634 MHz on average.

We also run 3DMark 11 again immediately following the stress test to determine any detrimental effects extreme load might have on the system. Scores were lower than before, but only by an insignificant amount.

Stress test: Prime95 solo
Stress test: Prime95 solo
Stress test: FurMark solo
Stress test: FurMark solo
Stress test: FurMark + Prime95
Stress test: FurMark + Prime95
Max. Load
 38 °C
100 F
41.8 °C
107 F
40.1 °C
104 F
 
 32.6 °C
91 F
40.1 °C
104 F
39.6 °C
103 F
 
 29.5 °C
85 F
31.1 °C
88 F
31.3 °C
88 F
 
Maximum: 41.8 °C = 107 F
Average: 36 °C = 97 F
40.9 °C
106 F
38.9 °C
102 F
37.7 °C
100 F
37.1 °C
99 F
36.8 °C
98 F
33.3 °C
92 F
31.6 °C
89 F
31.6 °C
89 F
30 °C
86 F
Maximum: 40.9 °C = 106 F
Average: 35.3 °C = 96 F
Power Supply (max.)  37.5 °C = 100 F | Room Temperature 22.4 °C = 72 F | Voltcraft IR-900
(±) The average temperature for the upper side under maximal load is 36 °C / 97 F, compared to the average of 30.4 °C / 87 F for the devices in the class Convertible.
(±) The maximum temperature on the upper side is 41.8 °C / 107 F, compared to the average of 35.5 °C / 96 F, ranging from 21.8 to 55.7 °C for the class Convertible.
(±) The bottom heats up to a maximum of 40.9 °C / 106 F, compared to the average of 36.6 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 24.9 °C / 77 F, compared to the device average of 30.4 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 31.3 °C / 88.3 F and are therefore cool to the touch.
(-) The average temperature of the palmrest area of similar devices was 29.2 °C / 84.6 F (-2.1 °C / -3.7 F).
Lenovo Yoga C930-13IKB
UHD Graphics 620, 8250U, SK hynix PC401 HFS256GD9TNG
Lenovo Yoga 920-13IKB-80Y7
UHD Graphics 620, 8550U, Samsung PM961 MZVLW256HEHP
Lenovo Yoga 720-13IKB
UHD Graphics 620, 8550U, Toshiba XG4 NVMe (THNSN5512GPUK)
Asus ZenBook Flip 14 UX461UA
UHD Graphics 620, 8250U, SanDisk SD8SN8U256G1002
Fujitsu Stylistic Q738
UHD Graphics 620, 8350U, Samsung SSD PM871b MZNLN256HAJQ
HP Spectre x360 13-ae048ng
UHD Graphics 620, 8550U, Toshiba NVMe THNSN51T02DUK
Heat
2%
-10%
3%
-16%
-14%
Maximum Upper Side *
41.8
44.4
-6%
39.2
6%
39
7%
44.8
-7%
46.5
-11%
Maximum Bottom *
40.9
42.8
-5%
40.6
1%
45.6
-11%
49.2
-20%
46.5
-14%
Idle Upper Side *
25.6
22.2
13%
30.5
-19%
23.3
9%
30.3
-18%
29.6
-16%
Idle Bottom *
24.5
23.4
4%
31.2
-27%
23.1
6%
28.8
-18%
28.4
-16%

* ... smaller is better

Heatmap top (load)
Heatmap top (load)
Heatmap bottom (load)
Heatmap bottom (load)
Heatmap overview (load)
Heatmap overview (load)

Speaker

360-degree hinge housing the speakers (Source: Lenovo)
360-degree hinge housing the speakers (Source: Lenovo)
Speaker underneath the palm rest
Speaker underneath the palm rest

When it comes to sound Lenovo has decided to reinvent the wheel. For the first time ever a speaker has been mounted inside the 360-degree hinge, resulting in a speaker facing the user directly for optimal sound performance at all times. In addition to moving the speaker assembly into the hinge, Lenovo has also added two extra speakers, meaning that the C930 features a total of four hinge-mounted speakers. Given their central location, one would almost be tempted to refer to this assembly as a miniature sound bar. Thanks to support for Dolby Atmos, the speakers even managed to produce a surprisingly decent three-dimensional soundscape.

Sound quality was definitely much better than average, and video conferencing benefitted immensely as well. Highs and mids were very pronounced and clear even at maximum volume, and there was even a hint of bass. The two microphones are mounted above the display, and are thus far enough away from the fan vents to prevent any static.

The 3.5-mm audio jack supports headphones and external speakers, and our review unit’s audio jack worked flawlessly.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2028.729.92526.826.43129.325.14026.224.75025.233.56323.430.18021.84110020.848.912520.953.716020.460.720020.562.125020.561.731520.363.940019.966.750019.865.963018.768.680018.76810001862.9125017.663160017.564.4200017.267.7250016.867.2315016.467.4400015.967500015.762.6630015.857.1800015.557.5100001551.91250014.848.41600014.441.2SPL29.377.4N1.242.5median 17.6median 62.9Delta2.35.736.130.936.132.132.132.133.133.733.130.729.330.730.130.630.129.227.229.230.827.230.840.225.140.245.624.645.647234741.722.741.750.122.450.155.421.655.457.520.357.556.818.856.856.118.556.160.917.860.960.717.760.759.817.759.859.617.759.659.417.359.458.717.758.761.417.861.458.218.158.25618.25657.518.557.560.618.560.660.518.660.559.418.559.459.118.759.171.430.471.429.51.429.5median 58.2median 18.5median 58.23.62.23.6hearing rangehide median Pink NoiseLenovo Yoga C930-13IKBAsus ZenBook Flip 14 UX461UA
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Lenovo Yoga C930-13IKB audio analysis

(±) | speaker loudness is average but good (77.4 dB)
Bass 100 - 315 Hz
(+) | good bass - only 4.8% away from median
(±) | linearity of bass is average (8.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3% away from median
(+) | mids are linear (4.6% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | reduced highs - on average 5.1% lower than median
(+) | highs are linear (5.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (11.9% difference to median)
Compared to same class
» 6% of all tested devices in this class were better, 1% similar, 93% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 7% of all tested devices were better, 1% similar, 92% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Asus ZenBook Flip 14 UX461UA audio analysis

(-) | not very loud speakers (61.39 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.6% lower than median
(±) | linearity of bass is average (14.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.7% away from median
(+) | mids are linear (3.1% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 1.6% away from median
(+) | highs are linear (4.8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (10.5% difference to median)
Compared to same class
» 0% of all tested devices in this class were better, 2% similar, 98% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 3% of all tested devices were better, 2% similar, 95% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Energy Management

Power Consumption

65 W power supply
65 W power supply
Power supply with USB-C cable
Power supply with USB-C cable

Overall power consumption was slightly above average, however not by much. When idle, the power meter read 3.3 - 9.5 W, which was slightly below the Asus ZenBook Flip 14. Maximum power consumption under load peaked at 57 W, but the average was significantly lower at just 40.8 W.

The USB-C power supply is rated at 65 W. Our review unit’s battery did not discharge under extreme load.

Power Consumption
Off / Standbydarklight 0.41 / 0.61 Watt
Idledarkmidlight 3.3 / 6.8 / 9.5 Watt
Load midlight 40.8 / 57 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Lenovo Yoga C930-13IKB
8250U, UHD Graphics 620, SK hynix PC401 HFS256GD9TNG, IPS, 1920x1080, 13.9
Lenovo Yoga 920-13IKB-80Y7
8550U, UHD Graphics 620, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 13.9
Lenovo Yoga 720-13IKB
8550U, UHD Graphics 620, Toshiba XG4 NVMe (THNSN5512GPUK), IPS, 1920x1080, 13.3
Asus ZenBook Flip 14 UX461UA
8250U, UHD Graphics 620, SanDisk SD8SN8U256G1002, IPS, 1920x1080, 14
Fujitsu Stylistic Q738
8350U, UHD Graphics 620, Samsung SSD PM871b MZNLN256HAJQ, IPS, 1920x1080, 13.3
HP Spectre x360 13-ae048ng
8550U, UHD Graphics 620, Toshiba NVMe THNSN51T02DUK, IPS, 1920x1080, 13.3
Average Intel UHD Graphics 620
 
Average of class Convertible
 
Power Consumption
18%
2%
11%
20%
17%
4%
5%
Idle Minimum *
3.3
3.1
6%
3.8
-15%
3.3
-0%
4.2
-27%
3.2
3%
3.97 (2 - 9.7, n=110)
-20%
4.75 (1.8 - 23, n=345)
-44%
Idle Average *
6.8
6.6
3%
8.4
-24%
6.3
7%
7
-3%
6
12%
7.09 (4.3 - 12.5, n=110)
-4%
7.89 (3.8 - 32.3, n=345)
-16%
Idle Maximum *
9.5
7
26%
9.7
-2%
11
-16%
7.9
17%
9.2
3%
8.82 (5.2 - 14.8, n=110)
7%
9.37 (4.1 - 61, n=345)
1%
Load Average *
40.8
35.2
14%
36
12%
30
26%
19.8
51%
29.5
28%
35.5 (15 - 56, n=110)
13%
26.2 (1.4 - 94, n=343)
36%
Load Maximum *
57
34.6
39%
36
37%
35.4
38%
22
61%
35.6
38%
42.6 (22 - 79, n=110)
25%
30.6 (10.4 - 117, n=344)
46%

* ... smaller is better

Battery Life

3DMark 11 on battery
3DMark 11 on battery
Cinebench R15 on battery
Cinebench R15 on battery
60 Wh battery
60 Wh battery

Unfortunately, Lenovo has opted for a slightly smaller 60 Wh battery than on the Yoga 920 predecessor. The battery is not user-replaceable and takes up a significant amount of internal space. Lenovo claims up to 14.5 hours of battery life, which we were only able to achieve in our idle test. In our real-world Wi-Fi test the device lasted for around 9 hours, which means that the battery should easily last for a full working day of moderate use. We had to reduce display brightness to 81% for our Wi-Fi and H.264 test to achieve the normalized brightness level of 150 nits. In this video test, it lasted for 10.5 hours, and is thus well suited for extended binge watching sessions. Charging the battery from near empty to full takes just 2 hours, and the charge level indicator read 75% after one hour of charging.

The C930 performed almost identically on battery and on mains. The Cinebench R15 multi-thread score on battery was slightly lower than on mains, but at around 500 points it was still at an acceptable level for the Core i5-8250U. 3D performance, on the other hand, was virtually identical.

Battery Runtime
Idle (without WLAN, min brightness)
23h 52min
NBC WiFi Websurfing Battery Test 1.3 (Edge 42.17134.1.0)
9h 10min
Big Buck Bunny H.264 1080p
10h 32min
Load (maximum brightness)
2h 04min
Lenovo Yoga C930-13IKB
8250U, UHD Graphics 620, 60 Wh
Lenovo Yoga 920-13IKB-80Y7
8550U, UHD Graphics 620, 70 Wh
Lenovo Yoga 720-13IKB
8550U, UHD Graphics 620, 48 Wh
Asus ZenBook Flip 14 UX461UA
8250U, UHD Graphics 620, 57 Wh
Fujitsu Stylistic Q738
8350U, UHD Graphics 620,  Wh
HP Spectre x360 13-ae048ng
8550U, UHD Graphics 620, 60 Wh
Average of class Convertible
 
Battery Runtime
18%
-15%
-9%
-30%
33%
-19%
Reader / Idle
1432
1655
16%
1131
-21%
765 (117 - 1985, n=277)
-47%
H.264
632
513
-19%
1070
69%
449 (206 - 1070, n=100)
-29%
WiFi v1.3
550
685
25%
466
-15%
566
3%
383
-30%
527
-4%
448 (153 - 1010, n=219)
-19%
Load
124
140
13%
125
1%
166
34%
148 (49 - 677, n=266)
19%

Verdict

Pros

+ sturdy aluminium case
+ very well built
+ innovative speaker arrangement
+ decent sound quality with Dolby Atmos
+ decent Wi-Fi performance
+ Active Pen
+ touch display without PWM
+ acceptable color space coverage
+ NVMe SSD
+ decent system performance
+ quiet cooling solution even under load

Cons

- cooler quickly overburdened under load
- throttling under maximum load
- poor color accuracy out of the box
- display too dark
- no dedicated GPU
- no SD card reader
Lenovo Yoga C930-13IKB. Review unit courtesy of campuspoint.
Lenovo Yoga C930-13IKB. Review unit courtesy of campuspoint.

Lenovo’s Yoga C930-13IKB is a high-priced premium convertible. The base unit - our review unit - starts at $1,400, and it comes with an Intel Core i5-8250U, a 13.9-inch display, and 256 GB of storage space that can be easily upgraded retroactively. Lenovo offers storage options of up to 2 TB.

The case was surprisingly robust, sturdy, very well made and seemingly worth the price. Thanks to decent input devices and a touch display, the device was well suited for extended work sessions, and its battery should easily last for a full working day of moderate use.

The display was a mixed bag. Image quality, which improved significantly after calibration, was very good. Unfortunately, its already low brightness suffered from this process, and we advise against using our resulting ICC profile outdoors.

Lenovo’s Yoga C930 is an impressive device. It offers solid performance and a very well-built case. The hinge-mounted speakers resembling a sound bar are certainly a highlight.

We did detect issues, however, during our stress test. The C930’s cooling solution was obviously incapable of handling the Core i5-8250U, and it ran at its base clock speed most of the time. In return, its fans were very quiet even under load. The fingerprint sensor worked flawlessly and supports Windows Hello. Maybe the next generation will also include an infrared camera for face detection authentication.

Overall, the Yoga C930 is an impressive device with impressive features. The Active Pen can be stored and automatically charged inside the device itself.

Its connectivity is up-to-date and includes Thunderbolt 3. Unfortunately, it lacks a card reader.

Lenovo Yoga C930-13IKB - 10/21/2018 v6
Sebastian Bade

Chassis
90 / 98 → 92%
Keyboard
83%
Pointing Device
90%
Connectivity
64 / 80 → 79%
Weight
70 / 35-78 → 82%
Battery
92%
Display
81%
Games Performance
58 / 68 → 85%
Application Performance
86 / 87 → 98%
Temperature
92%
Noise
97%
Audio
82 / 91 → 90%
Camera
59 / 85 → 69%
Average
80%
87%
Convertible - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Lenovo Yoga C930-13IKB (i5-8250U, FHD) Convertible Review
Sebastian Bade, 2018-10-23 (Update: 2018-10-25)