Notebookcheck

Asus Zenbook UX305UA-FC040T Subnotebook Review

Sascha Mölck (translated by Martina Osztovits), 03/02/2016

Long lasting. A Skylake processor implies higher performance in the Zenbook UX305 without negative impact on the battery runtimes. The fast SSD, Full HD display and good keyboard remain unchanged.

For the original German review, see here.

The slim 13.3-inchers of the Zenbook series from Asus are very popular. Therefore, we have already reviewed many models. Here, we cover a representative of the Zenbook UX305 series. Initially, Asus equipped this series with Core M processors. In the meanwhile, Asus also offers Core i models including our test model. Our review will reveal which advantages and disadvantages the new Skylake processor brings. The competitors of the Zenbook include computers like the Apple MacBook Air 13, the Dell XPS 13, and the Lenovo U31-70. Certainly, the Zenbook UX303 series also belongs to the competitors.

Since the Zenbook uses the same design as its siblings, we will not cover case, connectivity, input devices, and speakers in detail here. Information about these is available in our Zenbook UX305LA-FC012H and Zenbook UX305FA-FB003H reviews.

Asus Zenbook UX305UA-FC040T (Zenbook UX303UA Series)
Graphics adapter
Intel HD Graphics 520, Core: 200-950 MHz, dual channel, 20.19.15.4352
Memory
8192 MB 
, DDR3-1600, dual channel, no RAM slots, RAM is soldered
Display
13.3 inch 16:9, 1920 x 1080 pixel, AU Optronics B133HAN02.7, IPS, glossy: no
Mainboard
Intel Skylake-U Premium PCH
Storage
SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND), 512 GB 
, 440 GB free
Soundcard
Conexant CX20751/2 @ Intel Skylake High Definition Audio Controller
Connections
1 USB 2.0, 2 USB 3.0 / 3.1 Gen1, 1 HDMI, Audio Connections: audio combo, Card Reader: SD, Brightness Sensor, TPM 2.0
Networking
Intel Dual Band Wireless-AC 7265 (a/b/g/h/n/ac), Bluetooth 4.0
Size
height x width x depth (in mm): 12 x 324 x 226 ( = 0.47 x 12.76 x 8.9 in)
Battery
56 Wh, 56 mAh Lithium-Ion
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: HD web cam
Additional features
Speakers: Stereo, Keyboard: Chiclet, Keyboard Light: no, bag, USB 3.0 to Ethernet adapter, Evernote, Foxit PhantomPDF, McAfee LiveSafe - Internet Security (trial version), MS Office (trial version), WPS Office, 24 Months Warranty
Weight
1.45 kg ( = 51.15 oz / 3.2 pounds), Power Supply: 175 g ( = 6.17 oz / 0.39 pounds)
Price
1249 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Pixel grid
Pixel grid

Asus has equipped the Zenbook with a matte 13.3-inch display with a native resolution of 1920x1080 pixels. Brightness (351.2 cd/m²) and contrast (895:1) are convincing. Unfortunately, the display shows PWM flickering at 50 Hz at brightness levels of 20 percent and below. This can cause eye problems and headache in many persons.

372
cd/m²
371
cd/m²
380
cd/m²
325
cd/m²
358
cd/m²
339
cd/m²
328
cd/m²
336
cd/m²
352
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 380 cd/m² Average: 351.2 cd/m² Minimum: 21 cd/m²
Brightness Distribution: 86 %
Center on Battery: 358 cd/m²
Contrast: 895:1 (Black: 0.4 cd/m²)
ΔE Color 5.96 | 0.4-29.43 Ø6.1
ΔE Greyscale 8.93 | 0.64-98 Ø6.4
93% sRGB (Argyll 3D) 60% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.28

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 detected 50 Hz ≤ 20 % brightness setting

The display backlight flickers at 50 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 20 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 50 Hz is very low, so the flickering may cause eyestrain and headaches after extended use.

In comparison: 52 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9705 (minimum: 43 - maximum: 142900) Hz was measured.

Zenbook vs. sRGB
Zenbook vs. sRGB
Zenbook vs. AdobeRGB
Zenbook vs. AdobeRGB

The DeltaE-2000 shift is just under 6 out-of-the-box. A value smaller than 3 would be desirable. The display is not bluish. It cannot cover the AdobeRGB and sRGB color spaces. The coverage is 60 percent (AdobeRGB) and 93 percent (sRGB), respectively.

CalMAN - Color Checker
CalMAN - Color Checker
CalMAN - Graustufen
CalMAN - Graustufen
CalMAN - Farbsättigung
CalMAN - Farbsättigung

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
28 ms ... rise ↗ and fall ↘ combined↗ 8 ms rise
↘ 20 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. » 59 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (25.5 ms).
       Response Time 50% Grey to 80% Grey
25 ms ... rise ↗ and fall ↘ combined↗ 15 ms rise
↘ 10 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 0.9 (minimum) to 636 (maximum) ms. » 12 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (40.7 ms).

The Zenbook comes with a viewing-angle-stable IPS panel. Thus, you can read from the screen from every position. The Zenbook can be used outdoors, but you should avoid direct sunlight.

The Zenbook outdoors.
The Zenbook outdoors.
Viewing angles: Zenbook
Viewing angles: Zenbook
Asus Zenbook UX305UA-FC040T
IPS, 1920x1080
Asus Zenbook UX305LA-FC012H
IPS, 1920x1080
Asus Zenbook UX305CA-EHM1
IPS, 1920x1080
Dell XPS 13 2016 i7 256GB QHD
IGZO , 3200x1800
Lenovo Yoga 900-13ISK 80MK
IPS, 3200x1800
Apple MacBook Air 13 inch 2015-03
TN LED, 1440x900
Lenovo U31-70 80M5003EGE
IPS, 1920x1080
Acer Aspire V3-372-50LK
IPS, 1920x1080
Response Times
88%
3211%
832%
-62%
-35%
Response Time Grey 50% / Grey 80% *
25 (15, 10)
37.6 (17.2, 20.4)
-50%
40 (10, 30, Schwankungen auf kleinstem Niveau (Akku/Netz ident))
-60%
38.8 (18.4, 20.4)
-55%
54 (19, 35)
-116%
46 (19, 27)
-84%
Response Time Black / White *
28 (8, 20)
24.8 (6.8, 18)
11%
30 (7, 23)
-7%
22.4 (9.2, 13.2)
20%
30 (7, 23)
-7%
24 (5, 19)
14%
PWM Frequency
50 (20)
201.6 (25, 78)
303%
4900 (100)
9700%
1316
2532%
Screen
15%
6%
17%
-8%
2%
-2%
-10%
Brightness middle
358
349
-3%
324.3
-9%
285
-20%
319.8
-11%
329
-8%
293
-18%
250
-30%
Brightness
351
338
-4%
314
-11%
281
-20%
302
-14%
310
-12%
289
-18%
247
-30%
Brightness Distribution
86
87
1%
93
8%
90
5%
88
2%
82
-5%
93
8%
87
1%
Black Level *
0.4
0.25
37%
0.289
28%
0.18
55%
0.835
-109%
0.405
-1%
0.36
10%
0.43
-8%
Contrast
895
1396
56%
1122
25%
1583
77%
383
-57%
812
-9%
814
-9%
581
-35%
Colorchecker DeltaE2000 *
5.96
5.49
8%
6.03
-1%
4.89
18%
2.68
55%
3.96
34%
4.94
17%
4.51
24%
Colorchecker DeltaE2000 max. *
10.99
7.51
32%
9.98
9%
Greyscale DeltaE2000 *
8.93
5.43
39%
7.89
12%
5.16
42%
2.35
74%
3.51
61%
4.11
54%
3.18
64%
Gamma
2.28 96%
2.17 101%
2.08 106%
2.15 102%
2.09 105%
3.83 57%
2.48 89%
2.43 91%
CCT
6548 99%
7055 92%
6490 100%
7106 91%
6975 93%
6711 97%
7508 87%
6743 96%
Color Space (Percent of AdobeRGB 1998)
60
60
0%
65.46
9%
59
-2%
57
-5%
38.4
-36%
37
-38%
37
-38%
Color Space (Percent of sRGB)
93
92
-1%
90.36
-3%
93
0%
88
-5%
59.8
-36%
58
-38%
58
-38%
Total Average (Program / Settings)
15% / 15%
47% / 27%
1614% / 816%
412% / 202%
2% / 2%
-32% / -12%
-23% / -15%

* ... smaller is better

Performance

The Asus Zenbook UX305UA is a subnotebook in 13.3-inch format. The built-in processor delivers sufficient performance for all usual application scenarios. Our test model is available from about 1250 Euros (~$1363). Other configurations are available. The prices start from 800 Euros (~$872).

CPU-Z
CPU-Z
CPU-Z
CPU-Z
GPU-Z
HWINfo
HWInfo

Processor

The Zenbook houses an Intel Core i7-6500U (Skylake) dual-core processor. It is an upper mid-range CPU, which should be sufficient for the requirements of most users. Its TDP is 15 watts. The CPU works at a base clock of 2.5 GHz. Thanks to Turbo, the clock rate can increase to 3 GHz (two cores) and 3.1 GHz (one core). The Turbo is used in mains operation and on battery.

A few months ago, we reviewed the Broadwell sibling of the Zenbook, which came with the direct predecessor of the CPU used here - the Core i7-5500U. The results in our CPU tests are quite close. The Skylake processor only brings slightly higher performance. The performance gain is bigger in multithread applications than in single thread applications.

The processor is soldered.
The processor is soldered.
Cinebench R10 Shading 32Bit
8260
Cinebench R10 Rendering Multiple CPUs 32Bit
9681
Cinebench R10 Rendering Single 32Bit
4838
Cinebench R11.5 OpenGL 64Bit
37.48 fps
Cinebench R11.5 CPU Multi 64Bit
3.53 Points
Cinebench R11.5 CPU Single 64Bit
1.45 Points
Cinebench R15 Ref. Match 64Bit
97.8 %
Cinebench R15 OpenGL 64Bit
41.39 fps
Cinebench R15 CPU Multi 64Bit
312 Points
Cinebench R15 CPU Single 64Bit
123 Points
Help
Cinebench R15
CPU Single 64Bit
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
125 Points ∼100% +2%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
123 Points ∼98% 0%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
123 Points ∼98%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
121 Points ∼97% -2%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
112 Points ∼90% -9%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
97 Points ∼78% -21%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
87 Points ∼70% -29%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
72 Points ∼58% -41%
CPU Multi 64Bit
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
312 Points ∼100%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
303 Points ∼97% -3%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
296 Points ∼95% -5%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
296 Points ∼95% -5%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
291 Points ∼93% -7%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
287 Points ∼92% -8%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
276 Points ∼88% -12%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
200 Points ∼64% -36%
Cinebench R11.5
CPU Single 64Bit
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
1.47 Points ∼100% +1%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
1.46 Points ∼99% +1%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
1.45 Points ∼99% 0%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
1.45 Points ∼99%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
1.43 Points ∼97% -1%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
1.41 Points ∼96% -3%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
1.13 Points ∼77% -22%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
0.81 Points ∼55% -44%
CPU Multi 64Bit
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
3.53 Points ∼100%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
3.52 Points ∼100% 0%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
3.26 Points ∼92% -8%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
3.23 Points ∼92% -8%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
3.2 Points ∼91% -9%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
3.14 Points ∼89% -11%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
3.07 Points ∼87% -13%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
1.79 Points ∼51% -49%
Cinebench R10
Rendering Single 32Bit
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
4980 Points ∼100% +3%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
4920 Points ∼99% +2%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
4881 Points ∼98% +1%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
4838 Points ∼97%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
4695 Points ∼94% -3%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
4600 Points ∼92% -5%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
4397 Points ∼88% -9%
Rendering Multiple CPUs 32Bit
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
10973 Points ∼100% +13%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
10008 Points ∼91% +3%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
9942 Points ∼91% +3%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
9767 Points ∼89% +1%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
9681 Points ∼88%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
9543 Points ∼87% -1%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
9348 Points ∼85% -3%
Geekbench 3
32 Bit Multi-Core Score
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
6655 Points ∼100%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
6406 Points ∼96% -4%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
6039 Points ∼91% -9%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
5769 Points ∼87% -13%
32 Bit Single-Core Score
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
3133 Points ∼100%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
3053 Points ∼97% -3%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
2846 Points ∼91% -9%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
2747 Points ∼88% -12%
Sunspider - 1.0 Total Score
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
124.5 ms * ∼100% -52%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
96.2 ms * ∼77% -18%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
95.3 ms * ∼77% -17%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
89 ms * ∼71% -9%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
85 ms * ∼68% -4%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
81.8 ms * ∼66%
JetStream 1.1 - Total Score
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
212.94 Points ∼100%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
116.6 Points ∼55% -45%
Mozilla Kraken 1.1 - Total Score
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
2292.2 ms * ∼100% -102%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
2250.8 ms * ∼98% -98%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
1250.7 ms * ∼55% -10%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
1149 ms * ∼50% -1%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
1134.1 ms * ∼49%
Octane V2 - Total Score
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
31796 Points ∼100%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
29724 Points ∼93% -7%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
28525 Points ∼90% -10%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
14493 Points ∼46% -54%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
14491 Points ∼46% -54%
Peacekeeper - ---
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
2962 Points ∼100%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
2714 Points ∼92% -8%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
2659 Points ∼90% -10%

* ... smaller is better

System Performance

It should not surprise that the Zenbook runs smoothly and fast in view of its specs: faster processor, SSD, dual-channel RAM. Accordingly, the results of the PC Mark benchmarks are very good. It is not possible to increase the system performance of the Zenbook. Asus already gets the maximum out of the system.

PCMark 7 Score
5389 points
PCMark 8 Home Score Accelerated v2
3341 points
PCMark 8 Creative Score Accelerated v2
3937 points
PCMark 8 Work Score Accelerated v2
4225 points
Help
PCMark 8 - Home Score Accelerated v2
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
3579 Points ∼100% +7%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
3341 Points ∼93%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
3209 Points ∼90% -4%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
3167 Points ∼88% -5%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
2841 Points ∼79% -15%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
2837 Points ∼79% -15%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
2833 Points ∼79% -15%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
2822 Points ∼79% -16%
PCMark 7 - Score
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
5478 Points ∼100% +2%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
5389 Points ∼98%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
5205 Points ∼95% -3%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
5197 Points ∼95% -4%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
5180 Points ∼95% -4%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
4977 Points ∼91% -8%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
4635 Points ∼85% -14%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
3819 Points ∼70% -29%

Storage Device & Card Rader

A Solid State Disk form Hynix is used as the system drive. It is an M.2 model with a capacity of 512 GB. As usual for Asus notebooks, the drive is partitioned in an OS partition (190 GB) and a data partition (286 GB). The transfer rates of the SSD are very good.

The built-in card reader is not one of the fastest models. When copying big data blocks, it achieves a maximum transfer rate of 37.4 MB/s. Moving 250 jpg files (5 MB each) is done at 29 MB/s. We always test card readers with our reference card (Toshiba Exceria Pro SDXC 64 GB UHS-II).

An M.2 SSD is used.
An M.2 SSD is used.
SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
Sequential Read: 469.1 MB/s
Sequential Write: 412.1 MB/s
512K Read: 301.6 MB/s
512K Write: 327.1 MB/s
4K Read: 28.08 MB/s
4K Write: 71.87 MB/s
4K QD32 Read: 262 MB/s
4K QD32 Write: 274.7 MB/s

Graphics Card

Graphics is done by Intel's HD Graphics 520. It supports DirectX 12 and works at up to 950 MHz. Thanks to dual-channel RAM, the GPU is more efficiently used and delivers higher performance. Thus, the Zenbook performs better in the 3D Mark benchmarks than comparable computers with single-channel RAM. The Skylake GPU performs significantly better than its direct Broadwell predecessor - the HD Graphics 5500.

A decoder integrated in the GPU, reduces the load of the CPU when playing usual video formats including the H.265 format (successor of the H.264). The CPU load is below 10 percent while playing our test video (4k, 60 fps, H.265).

3DMark 11 Performance
1525 points
3DMark Ice Storm Standard Score
56569 points
3DMark Cloud Gate Standard Score
5734 points
3DMark Fire Strike Score
826 points
Help
3DMark 11 - 1280x720 Performance
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
1849 Points ∼100% +21%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
1556 Points ∼84% +2%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
1535 Points ∼83% +1%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
1525 Points ∼82%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
1487 Points ∼80% -2%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
1459 Points ∼79% -4%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
1198 Points ∼65% -21%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
1151 Points ∼62% -25%
3DMark
1920x1080 Fire Strike Score
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
1073 Points ∼100% +30%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
903 Points ∼84% +9%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
847 Points ∼79% +3%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
826 Points ∼77%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
814 Points ∼76% -1%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
757 Points ∼71% -8%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
596 Points ∼56% -28%
1280x720 Sky Diver Score
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
4053 Points ∼100% +16%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
3480 Points ∼86%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
2788 Points ∼69% -20%
1280x720 Cloud Gate Standard Score
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
6061 Points ∼100% +6%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
5896 Points ∼97% +3%
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
5833 Points ∼96% +2%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
5778 Points ∼95% +1%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
5734 Points ∼95%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
5461 Points ∼90% -5%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
5333 Points ∼88% -7%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
3778 Points ∼62% -34%
1280x720 Ice Storm Standard Score
Acer Aspire V3-372-50LK
HD Graphics 520, 6200U, Toshiba HG6 THNSNJ256G8NU
56687 Points ∼100% 0%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
56569 Points ∼100%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
56022 Points ∼99% -1%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
52990 Points ∼93% -6%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
51649 Points ∼91% -9%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
45983 Points ∼81% -19%
Lenovo Yoga 900-13ISK 80MK
HD Graphics 520, 6500U, Samsung SSD PM871 MZNLN512HCJH
44755 Points ∼79% -21%
Asus Zenbook UX305CA-EHM1
HD Graphics 515, 6Y30, Micron M600 MTFDDAV256MBF M.2
37002 Points ∼65% -35%
3DMark 06 - 1280x1024 Standard AA:0x AF:0x
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
9408 Points ∼100%
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
9199 Points ∼98%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
7769 Points ∼83%

Gaming Performance

Overall, the performance of the Skylake GPUs is significantly higher than their predecessors'. Together with dual-channel RAM, the performance reaches the level of dedicated lower mid-range graphics cards. Thus, the Zenbook delivers limited gaming capabilities. It can smoothly run many games at low resolution and low to medium quality settings. Primarily, this is true for games with not too high hardware requirements. Performance-hungry titles like The Witcher 3 never achieve playable frame rates. Notebooks of the Zenbook UX303 series are recommendable for higher gaming performance. This series includes models with GeForce 940M.

low med. high ultra
Tomb Raider (2013) 67.933.321.710.1fps
BioShock Infinite (2013) 46.825.721.56.4fps
Dirt Rally (2015) 116.626.612.512.5fps
XCOM 2 (2016) 16.35.22.9fps
Tomb Raider - 1366x768 Normal Preset AA:FX AF:4x
Lenovo U31-70 80M5003EGE
GeForce 920M, 5500U, Western Digital WD10S21X SSHD 1TB + 8GB SSD-Cache
43.9 fps ∼100% +32%
Dell XPS 13 2016 i7 256GB QHD
HD Graphics 520, 6500U, Samsung PM951 NVMe MZ-VLV256D
36.6 fps ∼83% +10%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
34.5 fps ∼79% +4%
Asus Zenbook UX305UA-FC040T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
33.3 fps ∼76%
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
31.1 fps ∼71% -7%

Emissions

System Noise

When idle, the fan of the Zenbook is usually at rest and the device works silently. Under load, the fan accelerates. During the stress test, we measured a system noise of 38 dB(A). This value is all right.

Noise Level

Idle
31.3 / 31.3 / 32.2 dB(A)
Load
37.6 / 38 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: 31.3 dB(A)
Asus Zenbook UX305UA-FC040T
6500U, HD Graphics 520
Asus Zenbook UX305LA-FC012H
5500U, HD Graphics 5500
Dell XPS 13 2016 i7 256GB QHD
6500U, HD Graphics 520
Lenovo Yoga 900-13ISK 80MK
6500U, HD Graphics 520
Apple MacBook Air 13 inch 2015-03
5650U, HD Graphics 6000
Lenovo U31-70 80M5003EGE
5500U, GeForce 920M
Acer Aspire V3-372-50LK
6200U, HD Graphics 520
Noise
4%
1%
6%
-1%
-7%
6%
off / environment *
31.3
Idle Minimum *
31.3
29.6
5%
31.8
-2%
29.7
5%
29.2
7%
31.9
-2%
31.5
-1%
Idle Average *
31.3
29.6
5%
31.8
-2%
29.8
5%
29.2
7%
32.3
-3%
31.5
-1%
Idle Maximum *
32.2
29.6
8%
34.8
-8%
30
7%
29.2
9%
32.3
-0%
31.5
2%
Load Average *
37.6
39.3
-5%
34.8
7%
32
15%
40.2
-7%
40.8
-9%
32.4
14%
Load Maximum *
38
36
5%
34.8
8%
38.5
-1%
46.3
-22%
46.6
-23%
32.3
15%

* ... smaller is better

Temperature

The Zenbook during the stress test.
The Zenbook during the stress test.

The Zenbook behaves the same way in the stress test (Prime95 and FurMark run for at least one hour) whether in mains operation or on battery. The processor clocks at 1.4 GHz, while the graphics core works at 900 MHz. Thereby, the computer barely gets warmer. During the stress test, we recorded a temperature above 40 degrees Celsius (104 Fahrenheit) in a single measurement segment.

Max. Load
 35.8 °C
96 F
40.8 °C
105 F
32.2 °C
90 F
 
 27.2 °C
81 F
38 °C
100 F
29.4 °C
85 F
 
 26.6 °C
80 F
26.8 °C
80 F
27.6 °C
82 F
 
Maximum: 40.8 °C = 105 F
Average: 31.6 °C = 89 F
30.5 °C
87 F
37 °C
99 F
36.4 °C
98 F
29 °C
84 F
32.8 °C
91 F
29.5 °C
85 F
28.2 °C
83 F
28.8 °C
84 F
28.2 °C
83 F
Maximum: 37 °C = 99 F
Average: 31.2 °C = 88 F
Power Supply (max.)  39.6 °C = 103 F | Room Temperature 23.4 °C = 74 F | FIRT 550-Pocket
(+) The average temperature for the upper side under maximal load is 31.6 °C / 89 F, compared to the average of 30.7 °C / 87 F for the devices in the class Subnotebook.
(±) The maximum temperature on the upper side is 40.8 °C / 105 F, compared to the average of 35.8 °C / 96 F, ranging from 22 to 57 °C for the class Subnotebook.
(+) The bottom heats up to a maximum of 37 °C / 99 F, compared to the average of 40.1 °C / 104 F
(+) In idle usage, the average temperature for the upper side is 24.1 °C / 75 F, compared to the device average of 30.7 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 27.6 °C / 81.7 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 28.6 °C / 83.5 F (+1 °C / 1.8 F).
Asus Zenbook UX305UA-FC040T
6500U, HD Graphics 520
Asus Zenbook UX305LA-FC012H
5500U, HD Graphics 5500
Asus Zenbook UX305CA-EHM1
6Y30, HD Graphics 515
Dell XPS 13 2016 i7 256GB QHD
6500U, HD Graphics 520
Lenovo Yoga 900-13ISK 80MK
6500U, HD Graphics 520
Apple MacBook Air 13 inch 2015-03
5650U, HD Graphics 6000
Lenovo U31-70 80M5003EGE
5500U, GeForce 920M
Acer Aspire V3-372-50LK
6200U, HD Graphics 520
Heat
-9%
9%
-41%
0%
-13%
-16%
-27%
Maximum Upper Side *
40.8
45.9
-13%
34.6
15%
57
-40%
37.4
8%
43.8
-7%
40.8
-0%
49.3
-21%
Maximum Bottom *
37
45
-22%
35.2
5%
56
-51%
36.4
2%
42.1
-14%
43.8
-18%
53.3
-44%
Idle Upper Side *
25.2
25.6
-2%
22.6
10%
34.1
-35%
26.6
-6%
28.5
-13%
29.8
-18%
28.2
-12%
Idle Bottom *
24.9
25
-0%
23.4
6%
34.3
-38%
25.6
-3%
28.9
-16%
31.5
-27%
32.6
-31%

* ... smaller is better

Energy Management

Power Consumption

When idle, we measured a maximum energy demand of 6.7 watts - a good value. The power consumption does not get unexpectedly high during load. During the stress test, it is 31 watts. We measured virtually the same value at medium load. Here, it is noticeable that the CPU throttles during the stress test. The power adapter is rated at 45 watts.

Power Consumption
Off / Standbydarklight 0.32 / 0.38 Watt
Idledarkmidlight 3.2 / 6.5 / 6.7 Watt
Load midlight 30.6 / 31 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Asus Zenbook UX305UA-FC040T
6500U, HD Graphics 520
Asus Zenbook UX305LA-FC012H
5500U, HD Graphics 5500
Dell XPS 13 2016 i7 256GB QHD
6500U, HD Graphics 520
Apple MacBook Air 13 inch 2015-03
5650U, HD Graphics 6000
Lenovo U31-70 80M5003EGE
5500U, GeForce 920M
Acer Aspire V3-372-50LK
6200U, HD Graphics 520
Power Consumption
8%
-46%
3%
-25%
-7%
Idle Minimum *
3.2
2.6
19%
6.8
-113%
2.7
16%
3.9
-22%
3.8
-19%
Idle Average *
6.5
6.2
5%
10
-54%
5.7
12%
6.8
-5%
5.8
11%
Idle Maximum *
6.7
6.5
3%
10.5
-57%
6
10%
7
-4%
8.1
-21%
Load Average *
30.6
30.8
-1%
30.2
1%
32.1
-5%
40
-31%
30.2
1%
Load Maximum *
31
27
13%
33.6
-8%
36.2
-17%
51
-65%
32.4
-5%

* ... smaller is better

Battery Life

Accordingly, the battery life is good. The Skylake Zenbook can keep the values of its Broadwell sibling. We recorded a maximum battery life of just less than 24 hours. In our realistic WLAN test, the Zenbook achieves 9:21 h. This test simulates web surfing. The profile "balanced" is active and the display brightness is set to about 150 cd/m². The Asus computer finishes the video test in 9:05 h. Here, we play the short film Big Buck Bunny (H.264 coding, 1920x1080 pixels) in a loop. The Wi-Fi models are disabled and the display brightness is reduced to 150 cd/m².

The battery is rated at 56 Wh.
The battery is rated at 56 Wh.
Battery Runtime
Idle (without WLAN, min brightness)
23h 47min
NBC WiFi Websurfing Battery Test 1.3 (Edge 25.10586.0.0)
9h 21min
Big Buck Bunny H.264 1080p
9h 05min
Load (maximum brightness)
1h 58min
Asus Zenbook UX305UA-FC040T
56 Wh
Asus Zenbook UX305LA-FC012H
56 Wh
Asus Zenbook UX305CA-EHM1
45 Wh
Dell XPS 13 2016 i7 256GB QHD
56 Wh
Lenovo Yoga 900-13ISK 80MK
66 Wh
Apple MacBook Air 13 inch 2015-03
54 Wh
Lenovo U31-70 80M5003EGE
35 Wh
Acer Aspire V3-372-50LK
51 Wh
Battery Runtime
1%
8%
-27%
-20%
1%
-52%
-20%
Reader / Idle
1427
1469
3%
1052
-26%
784
-45%
844
-41%
1572
10%
525
-63%
906
-37%
H.264
545
582
7%
273
-50%
WiFi v1.3
561
569
1%
382
-32%
432
-23%
403
-28%
620
11%
253
-55%
349
-38%
Load
118
108
-8%
215
82%
103
-13%
128
8%
97
-18%
70
-41%
135
14%

Pros

+ bright, contrast-rich, matte IPS screen
+ Full HD resolution
+ stable, high-end case
+ very good input devices
+ very good battery life
+ works usually quietly
+ does hardly get warmer
+ fast SSD
+ maintainable

Cons

- no keyboard light
- PWM flickering

Verdict

In review: Asus Zenbook UX305UA-FC040T. Test model provided by Cyberport.de
In review: Asus Zenbook UX305UA-FC040T. Test model provided by Cyberport.de

The Asus Zenbook UX305UA delivers high CPU performance and at least limited gaming capabilities. Nevertheless, the computer usually works quietly and hardly gets warm. A fast SSD makes for a responsive system. The computer does not lack storage space. The SSD has a capacity of 512 GB. If needed, the SSD could be replaced. While the Zenbook does not feature a maintenance hatch, the underside can be removed. In addition, we liked the viewing-angle-stable IPS display. It delivers high brightness and good contrast. The built-in keyboard remained as good as previously. It is apt for prolific writers. However, we do not quite understand why Asus did not equip it with a backlight this time. This would make the bundle more balanced.

In brief: The Skylake Zenbook delivers higher performance without negative impact on the battery runtimes.

Asus adopts two approaches in its Zenbook UX305 series. The Core i models provide higher CPU performance and long battery runtimes. The Core M models cannot keep up in these aspects. In return, they work silently and are cheaper. It is up to the user, which properties are more important. In the coming days, Notebookcheck.com will publish a review of the new Zenbook UX305 model with Skylake Core M7 processor.

Asus Zenbook UX305UA-FC040T - 02/26/2016 v5
Sascha Mölck

Chassis
96 /  98 → 98%
Keyboard
89%
Pointing Device
93%
Connectivity
49 / 80 → 61%
Weight
70 / 35-78 → 81%
Battery
91%
Display
86%
Games Performance
56 / 68 → 83%
Application Performance
86 / 87 → 99%
Temperature
94 / 91 → 100%
Noise
90%
Audio
56 / 91 → 62%
Average
80%
88%
Subnotebook - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Asus Zenbook UX305UA-FC040T Subnotebook Review
Sascha Mölck, 2016-03- 2 (Update: 2018-05-15)