Notebookcheck

Asus Zenbook UX305LA (Core i7) Subnotebook Review

Sascha Mölck (translated by Ariana Brodsky), 10/08/2015

Well done, Asus. Until recently, Asus has been using Core M processors in their Zenbook UX305 models. However, the manufacturer now has greater aspirations. By adding new Core i7 processors to the series, Asus hopes to compete with the MacBook Air 13. Even with its stronger CPU, the Zenbook's battery life has improved. It just goes to show that in the wrestling ring of the computer world, sometimes it is not a disadvantage for a battery to put on some weight.

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For the original German review, see here.

The Asus Zenbook UX 305 is not unknown territory for us, as we have already tested two models in this line. Even so, after its substantial interior renovation, the device we now have in our hands is a debut of sorts. The big news: Whereas the previous models were outfitted with Core M processors, this new computer boasts of a Core i7. This does carry some consequences -- for instance, passive cooling is now impossible. The question is, all things considered, is the stronger processor more of a boon or a drawback? Read on to find out.

The Zenbook's competition includes notebooks like the Apple MacBook Air 13 (Early 2015), the Dell XPS 13, the Toshiba Kira, and the Acer Aspire S7-393.

As we have already reviewed two Zenbook models, we will not cover the notebook's case, connectivity features, input devices, display or speakers in detail. Here we will look at the changes Asus made for their Core i7 model, but for comprehensive coverage of these external features, see our reviews of the Asus Zenbook UX305FA-FC004H and the Asus Zenbook UX305FA-FB003H.

Asus Zenbook UX305LA-FC012H (UX Series)
Processor
Graphics adapter
Intel HD Graphics 5500, Core: 300-950 MHz, Single-channel, 10.18.14.4112
Memory
8192 MB 
, DDR3, Dual-Channel, Soldered
Display
13.3 inch 16:9, 1920x1080 pixel 166 PPI, AU Optronics B133HAN02.1, IPS, glossy: no
Mainboard
Intel Broadwell-U PCH-LP (Premium)
Storage
Micron M600 MTFDDAV256MBF M.2, 256 GB 
, 200 GB free
Soundcard
Conexant CX20751/2 @ Intel Wildcat Point-LP PCH - 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, Sensors: Brightness sensor
Networking
Intel Dual Band Wireless-AC 7265 (a/b/g/h/n/ac), Bluetooth 4.0
Size
height x width x depth (in mm): 15 x 324 x 226 ( = 0.59 x 12.76 x 8.9 in)
Battery
56 Wh Lithium-Ion, 11.31 V, 4780 mAh
Operating System
Microsoft Windows 8.1 64 Bit
Camera
Webcam: HD-Webcam
Primary Camera: 0.9 MPix
Additional features
Speakers: Stereo, Keyboard: Chiclet, Keyboard Light: no, Foxit PhantomPDF, McAfee LiveSafe-Internet Security (trial version), MS Office (trial version), 24 Months Warranty
Weight
1.3 kg ( = 45.86 oz / 2.87 pounds), Power Supply: 174.5 g ( = 6.16 oz / 0.38 pounds)
Price
1100 Euro

 

Case & Connectivity

The Zenbook's case bears great similarity to that of the two Core M Zenbooks we previously reviewed. There is just one small difference: Our current test device's case is about 3 mm (~0.12 in) thicker. Asus of course utilizes the extra room for the necessary fan, but the manufacturer also took advantage of the space to install a bigger battery (56 Wh vs. 45 Wh). The Core i7 model also lacks a few of the accessories included with the Core M models: The sleeve and USB-to-Ethernet adapter are both a thing of the past.

Display

The Zenbook is outfitted with the same Full HD panel as the Full HD Core M model we reviewed earlier this year. This is a matte IPS display with a very good maximum brightness level and very good contrast.

350
cd/m²
366
cd/m²
352
cd/m²
324
cd/m²
349
cd/m²
329
cd/m²
320
cd/m²
325
cd/m²
326
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 366 cd/m² Average: 337.9 cd/m²
Brightness Distribution: 87 %
Center on Battery: 285 cd/m²
Contrast: 1396:1 (Black: 0.25 cd/m²)
ΔE Color 5.49 | - Ø
ΔE Greyscale 5.43 | - Ø
92% sRGB (Argyll) 60% AdobeRGB 1998 (Argyll)
Gamma: 2.17
CalMAN - Color Checker
CalMAN - Color Checker
CalMAN - Grayscale
CalMAN - Grayscale
CalMAN - Color Saturation
CalMAN - Color Saturation
Asus Zenbook UX305LA-FC012H
IPS, 1920x1080
Asus Zenbook UX305FA-FC004H
IPS, 1920x1080
Asus ZenBook UX305FA-FB003H
IPS, 3200x1800
Apple MacBook Air 13 inch 2015-03
TN LED, 1440x900
Apple MacBook 12 (Early 2015) 1.1 GHz
IPS-Panel, 2304x1440
Acer Aspire S7-393-75508G25EWS
IPS, 2560x1440
Toshiba KIRA-10D
IPS, 1920x1080
Dell XPS 13-9343 Non-Touch
IPS, 1920x1080
Screen
-12%
-22%
-16%
11%
15%
12%
-9%
Brightness
338
341
1%
309
-9%
310
-8%
325
-4%
341
1%
316
-7%
405
20%
Brightness Distribution
87
93
7%
90
3%
82
-6%
90
3%
90
3%
92
6%
93
7%
Black Level *
0.25
0.33
-32%
0.75
-200%
0.405
-62%
0.324
-30%
0.23
8%
0.29
-16%
0.366
-46%
Contrast
1396
1064
-24%
413
-70%
812
-42%
1065
-24%
1565
12%
1152
-17%
1119
-20%
Colorchecker DeltaE2000 *
5.49
6.5
-18%
2.49
55%
3.96
28%
1.62
70%
3.35
39%
2.27
59%
7.67
-40%
Greyscale DeltaE2000 *
5.43
7.19
-32%
1.89
65%
3.51
35%
1.88
65%
3.62
33%
2.47
55%
4.66
14%
Gamma
2.17 111%
2.07 116%
2.36 102%
3.83 63%
2.55 94%
2.51 96%
2.36 102%
1.65 145%
CCT
7055 92%
6692 97%
6573 99%
6711 97%
6411 101%
6805 96%
6872 95%
6502 100%
Color Space (Percent of AdobeRGB 1998)
60
59.6
-1%
54
-10%
38.4
-36%
61.8
3%
65
8%
64
7%
59.65
-1%
Color Space (Percent of sRGB)
92
91.8
0%
83.1
-10%
59.8
-35%
95.5
4%

* ... smaller is better

Performance

Asus' Zenbook UX305LA-FC012H is a 13.3-inch subnotebook. The device's Core i7 processor offers sufficient computational power for any task the average user may wish to perform. The model under our scrutiny is currently available for about 1100 Euros (~$1240). There are alternative versions on the market -- as of this review's publication date, the most inexpensive models (with Core M processors) are priced at about 800 Euros (~$900).

CPU-Z
CPU-Z
CPU-Z
CPU-Z
GPU-Z
HWInfo
LatencyMon

Processor

When it comes to the processor, our current test device differs substantially from the Zenbook models we previously reviewed. The Core M processors found in the other versions of the subnotebook have disappeared, making way for the powerful Core i7. As a result, passive cooling is no longer an option with this computer. Asus equipped their Zenbook with an Intel Core i7-5500U dual-core processor (Broadwell) -- one of the most potent ULV processors in Intel's current line-up. The CPU runs at a base frequency of 2.4 GHz. Using turbo, the speed can be increased to up to 2.9 GHz (both cores) or 3 GHz (one core).

Considering that the Zenbook was originally designed as a passively cooled device, one might surmise that the substantially stronger and more power-hungry Core i7 processor would need to throttle in order to remain sufficiently cool. This is not the case. The processor performed all our CPU tests at full speed -- both in AC power mode and in battery mode. Only when both the CPU and the GPU were under full load (in the stress test) did the processor begin to throttle. Compared to its Core M siblings, the Core i7 processor provides the computer with a considerable performance boost. The CPU's single thread performance increased by 50 percent and its multi-thread performance doubled.

The processor is soldered to the motherboard.
The processor is soldered to the motherboard.
Cinebench R10 Shading 32Bit
7662
Cinebench R10 Rendering Multiple CPUs 32Bit
9767
Cinebench R10 Rendering Single 32Bit
4600
Cinebench R11.5 OpenGL 64Bit
28.28 fps
Cinebench R11.5 CPU Multi 64Bit
3.26 Points
Cinebench R11.5 CPU Single 64Bit
1.41 Points
Cinebench R15 Ref. Match 64Bit
98 %
Cinebench R15 OpenGL 64Bit
30.49 fps
Cinebench R15 CPU Multi 64Bit
296 Points
Cinebench R15 CPU Single 64Bit
121 Points
Help
Cinebench R15
CPU Single 64Bit (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
121 Points ∼54%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
81 Points ∼36% -33%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
82 Points ∼37% -32%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
112 Points ∼50% -7%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
105 Points ∼47% -13%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
98 Points ∼44% -19%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
121 Points ∼54% 0%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
121 Points ∼54% 0%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
110 Points ∼49% -9%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
123 Points ∼55% +2%
CPU Multi 64Bit (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
296 Points ∼16%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
150 Points ∼8% -49%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
155 Points ∼8% -48%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
296 Points ∼16% 0%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
239 Points ∼13% -19%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
254 Points ∼14% -14%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
274 Points ∼15% -7%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
289 Points ∼16% -2%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
260 Points ∼14% -12%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
287 Points ∼15% -3%
Cinebench R11.5
CPU Single 64Bit (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
1.41 Points ∼64%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
0.95 Points ∼43% -33%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
0.95 Points ∼43% -33%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
1.47 Points ∼67% +4%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
1.2 Points ∼55% -15%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
1.05 Points ∼48% -26%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
1.39 Points ∼63% -1%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
1.28 Points ∼58% -9%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
1.41 Points ∼64% 0%
CPU Multi 64Bit (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
3.26 Points ∼16%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
1.64 Points ∼8% -50%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
1.74 Points ∼9% -47%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
3.14 Points ∼16% -4%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
2.63 Points ∼13% -19%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
2.23 Points ∼11% -32%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
3 Points ∼15% -8%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
3.15 Points ∼16% -3%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
2.85 Points ∼14% -13%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
3.12 Points ∼16% -4%
Cinebench R10
Rendering Single 32Bit (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
4600 Points ∼60%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
3105 Points ∼41% -32%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
3100 Points ∼41% -33%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
4980 Points ∼65% +8%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
3951 Points ∼52% -14%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
4062 Points ∼53% -12%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
4631 Points ∼61% +1%
Rendering Multiple CPUs 32Bit (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
9767 Points ∼24%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
5217 Points ∼13% -47%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
5404 Points ∼13% -45%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
10008 Points ∼25% +2%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
7913 Points ∼20% -19%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
9047 Points ∼22% -7%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
9825 Points ∼24% +1%
Geekbench 3
32 Bit Multi-Core Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
6039 Points ∼19%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
3713 Points ∼12% -39%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
6406 Points ∼21% +6%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
6078 Points ∼20% +1%
32 Bit Single-Core Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
2846 Points ∼61%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
2038 Points ∼44% -28%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
3053 Points ∼66% +7%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
2925 Points ∼63% +3%
Sunspider - 1.0 Total Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2 (IE 11)
95.3 ms * ∼2%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002 (IE 11)
166.9 ms * ∼4% -75%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
157 ms * ∼4% -65%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
110.8 ms * ∼3% -16%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
167 ms * ∼4% -75%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
120.1 ms * ∼3% -26%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB (IE 11)
99.1 ms * ∼2% -4%
Mozilla Kraken 1.1 - Total Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2 (IE 11)
2292.2 ms * ∼4%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002 (IE 11)
3310.1 ms * ∼6% -44%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
3324 ms * ∼6% -45%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
2585.3 ms * ∼4% -13%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
3649 ms * ∼6% -59%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB (IE 11)
2313.4 ms * ∼4% -1%
Octane V2 - Total Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2 (IE 11)
14493 Points ∼29%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002 (IE 11)
9408 Points ∼19% -35%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
9344 Points ∼19% -36%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
12965 Points ∼26% -11%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
6867 Points ∼14% -53%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB (IE 11)
13536 Points ∼27% -7%
Peacekeeper - --- (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2 (IE 11)
2659 Points ∼43%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002 (IE 11)
1842 Points ∼30% -31%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB (IE 11)
2630 Points ∼42% -1%

* ... smaller is better

System Performance

Thanks to the computer's quick solid-state drive and strong Core i7 processor, the system's behavior is effortlessly fluid and always stable. We did not run into any problems. The subnotebook's results in the PCMark benchmarks are very good. The MacBook Air 13 (Early 2015), which is outfitted with a stronger CPU-GPU combo, comes in a bit ahead of our test device in the PCMark 8 benchmark. Boosting the Zenbook's system performance is not an option, as Asus already took full advantage of the device's computational power.

PCMark 7 Score
5180 points
PCMark 8 Home Score Accelerated v2
3167 points
PCMark 8 Creative Score Accelerated v2
3755 points
PCMark 8 Work Score Accelerated v2
4089 points
Help
PCMark 8 - Home Score Accelerated v2 (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
3167 Points ∼53%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
2319 Points ∼39% -27%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
2037 Points ∼34% -36%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
3579 Points ∼60% +13%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
3095 Points ∼52% -2%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
2911 Points ∼49% -8%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
3105 Points ∼52% -2%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
2935 Points ∼49% -7%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
2719 Points ∼46% -14%
PCMark 7 - Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
5180 Points ∼64%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
4001 Points ∼50% -23%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
5205 Points ∼65% 0%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
5012 Points ∼62% -3%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
4531 Points ∼56% -13%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
5107 Points ∼63% -1%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
5055 Points ∼63% -2%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
4745 Points ∼59% -8%

Storage Device

A solid-state disk in M.2 format serves as the system's storage medium. This drive has a gross capacity of 256 GB, 200 GB of which remain available to the user after the initial boot. The other 56 GB are occupied by the Windows installation data and a recovery partition. In general, Asus tends to split hard drives and SSDs into an operating system partition and a data partition. The Zenbook is no exception. In our case, the manufacturer forgot to format the data partition, leaving half of the storage space unusable upon arrival in our test lab. However, this is not a serious problem: In Windows' disk management utility, it is easy to configure the partition. After that, the whole storage space is available to the user. Overall, the SSD's transfer rates are good.

Asus installs an SSD in M.2 format (full size).
Asus installs an SSD in M.2 format (full size).
Micron M600 MTFDDAV256MBF M.2
Sequential Read: 518.2 MB/s
Sequential Write: 323.1 MB/s
512K Read: 463 MB/s
512K Write: 321.8 MB/s
4K Read: 31.79 MB/s
4K Write: 116.7 MB/s
4K QD32 Read: 323.9 MB/s
4K QD32 Write: 261.7 MB/s

Graphics Card

The Core i7 processor is not the Zenbook's only new occupant -- a new graphics core also tagged along for the move. The Intel HD Graphics 5500 GPU runs at speeds of up to 950 MHz and supports DirectX 11.2. The results in the 3D Mark benchmarks are at a normal level for this GPU. The graphics core profits from the fact that the RAM runs in dual-channel mode. Like the CPU, the GPU shows a vast increase in performance compared to the graphics units in the Core M Zenbooks. Our test device's HD Graphics 5500 core comes in 70 to 80 percent ahead of the other Zenbooks' HD Graphics 5300 cores.

3DMark 06 Standard
7769 points
3DMark 11 Performance
1198 points
3DMark Ice Storm Standard Score
51649 points
3DMark Cloud Gate Standard Score
5461 points
3DMark Fire Strike Score
757 points
Help
3DMark 11 - 1280x720 Performance (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
1198 Points ∼4%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
663 Points ∼2% -45%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
686 Points ∼2% -43%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
1459 Points ∼5% +22%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
1134 Points ∼4% -5%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
1134 Points ∼4% -5%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
982 Points ∼3% -18%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
1120 Points ∼4% -7%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
1163 Points ∼4% -3%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
1133 Points ∼4% -5%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
1252 Points ∼4% +5%
3DMark
1920x1080 Fire Strike Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
757 Points ∼3%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
390 Points ∼2% -48%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
407 Points ∼2% -46%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
903 Points ∼4% +19%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
592 Points ∼3% -22%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
769 Points ∼3% +2%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
715 Points ∼3% -6%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
714 Points ∼3% -6%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
781 Points ∼3% +3%
1280x720 Sky Diver Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
2788 Points ∼5%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
1451 Points ∼3% -48%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
2822 Points ∼5% +1%
1280x720 Cloud Gate Standard Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
5461 Points ∼11%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
3018 Points ∼6% -45%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
2958 Points ∼6% -46%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
6061 Points ∼12% +11%
Apple MacBook Air 13 MD761D/B 2014-06
HD Graphics 5000, 4260U, Apple SSD SD0256F
4894 Points ∼10% -10%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
4499 Points ∼9% -18%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
5267 Points ∼11% -4%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
5284 Points ∼11% -3%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
5136 Points ∼10% -6%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
5370 Points ∼11% -2%
1280x720 Ice Storm Standard Score (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
51649 Points ∼26%
Asus Zenbook UX305FA-FC004H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q128G1002
30389 Points ∼15% -41%
Asus ZenBook UX305FA-FB003H
HD Graphics 5300, 5Y10, SanDisk SD7SN3Q256G1002
27325 Points ∼14% -47%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
56022 Points ∼28% +8%
Toshiba Satellite Z30-B-100
HD Graphics 5500, 5200U, Toshiba THNSNJ256GMCU
40360 Points ∼20% -22%
Acer Aspire S7-393-75508G25EWS
HD Graphics 5500, 5500U, 2x Kingston SMSR150S3256G (RAID 0)
49552 Points ∼25% -4%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
52529 Points ∼27% +2%
Dell XPS 13 9343 Core i7
HD Graphics 5500, 5500U, Samsung SSD PM851 M.2 2280 256GB
50151 Points ∼25% -3%
3DMark 06 - 1280x1024 Standard AA:0x AF:0x (sort by value)
Asus Zenbook UX305LA-FC012H
HD Graphics 5500, 5500U, Micron M600 MTFDDAV256MBF M.2
7769 Points ∼19%
Apple MacBook Air 13 inch 2015-03
HD Graphics 6000, 5650U, Apple SSD SD0256F
9408 Points ∼23% +21%
Toshiba KIRA-10D
HD Graphics 5500, 5500U, Toshiba HG6 THNSNJ256GMCU
7589 Points ∼18% -2%
Dell XPS 13-9343 Non-Touch
HD Graphics 5500, 5200U, Samsung SSD PM851 M.2 2280 128GB
7167 Points ∼17% -8%

Gaming Performance

The Zenbook manages to render some games fluidly at low resolution and low to medium quality settings. This is primarily true for games that only place moderate demands on the system resources -- for instance, Dirt Rally. Current titles like Batman: Arkham Knight never reach sufficiently high frame rates. Gaming enthusiasts are better off with a different notebook. With another model from the Zenbook family, Asus proves that a 13.3-inch screen and gaming capabilities can go hand-in-hand. The Zenbook UX303 is available with Core i5/i7 processors and GeForce 840M/940M graphics cores. These devices come at a starting price of about 1000 Euros (~$1130).

low med. high ultra
Tomb Raider (2013) 60.831.120.39.7fps
GRID: Autosport (2014) 86.930.418.412.5fps
Dirt Rally (2015) 8821.412.512.5fps
Batman: Arkham Knight (2015) 12105fps
Metal Gear Solid V (2015) 33.521.18.7fps
Mad Max (2015) 16.27.9fps
World of Warships (2015) 48.637.317.913fps
FIFA 16 (2015) 42.433.817.2fps

Emissions

System Noise

Even though its processor is considerably more powerful, the Zenbook never makes too much noise. In idle mode, the fan generally stands still and silence reigns. Under load, of course, the fan needs to do its job. When the processor is pushed to its limits (Prime95), we measure a sound pressure level of 39.3 dB(A) -- an acceptable result. During the stress test (Prime95 and FurMark running simultaneously for at least an hour), this number sinks to 36 dB(A) as a result of the CPU and GPU throttling.

In idle mode, the fan generally stands still.
In idle mode, the fan generally stands still.

Noise Level

Idle
29.6 / 29.6 / 29.6 dB(A)
Load
39.3 / 36 dB(A)
 
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Voltcraft sl-320 (15 cm distance)
Asus Zenbook UX305LA-FC012H
5500U, HD Graphics 5500
Apple MacBook Air 13 inch 2015-03
5650U, HD Graphics 6000
Acer Aspire S7-393-75508G25EWS
5500U, HD Graphics 5500
Toshiba KIRA-10D
5500U, HD Graphics 5500
Dell XPS 13-9343 Non-Touch
5200U, HD Graphics 5500
Noise
-6%
0%
-8%
4%
Idle Minimum *
29.6
29.2
1%
29.6
-0%
29.6
-0%
29
2%
Idle Average *
29.6
29.2
1%
29.6
-0%
29.6
-0%
29.1
2%
Idle Maximum *
29.6
29.2
1%
29.6
-0%
30.7
-4%
29.2
1%
Load Average *
39.3
40.2
-2%
37.5
5%
43.9
-12%
31.1
21%
Load Maximum *
36
46.3
-29%
37.2
-3%
43.9
-22%
38.4
-7%

* ... smaller is better

Temperature

The Zenbook in the stress test.
The Zenbook in the stress test.

The Zenbook completes the stress test (Prime95 and FurMark running simultaneously for at least an hour) in the same way in both AC power mode and battery mode. The processor runs at 2.4 GHz for about five minutes, and then drops to a speed of 1.4 to 1.5 GHz. The graphics core displays the opposite behavior. This component runs at 450 to 500 MHz for the first five minutes, and then accelerates to 700 to 750 MHz. Despite its thin build, the Zenbook remains relatively cool. During the stress test, we only registered temperatures above 40 degrees Celsius (104 degrees Fahrenheit) in the region where the CPU resides. The device's case temperatures thus prove to be similar to those of the passively cooled Core M Zenbooks.

Max. Load
 41.6 °C45.9 °C34.4 °C 
 29 °C37.8 °C30.9 °C 
 28.5 °C28.3 °C28.2 °C 
Maximum: 45.9 °C
Average: 33.8 °C
31.1 °C45 °C37.8 °C
30.1 °C33.3 °C31.7 °C
29.3 °C30.6 °C30.5 °C
Maximum: 45 °C
Average: 33.3 °C
Power Supply (max.)  37 °C | Room Temperature 23.2 °C | Voltcraft IR-360
Asus Zenbook UX305LA-FC012H
5500U, HD Graphics 5500
Asus Zenbook UX305FA-FC004H
5Y10, HD Graphics 5300
Asus ZenBook UX305FA-FB003H
5Y10, HD Graphics 5300
Apple MacBook Air 13 inch 2015-03
5650U, HD Graphics 6000
Apple MacBook 12 (Early 2015) 1.1 GHz
5Y31, HD Graphics 5300
Acer Aspire S7-393-75508G25EWS
5500U, HD Graphics 5500
Toshiba KIRA-10D
5500U, HD Graphics 5500
Dell XPS 13-9343 Non-Touch
5200U, HD Graphics 5500
Heat
5%
2%
-4%
-17%
4%
4%
-6%
Maximum Upper Side *
45.9
44.9
2%
43.1
6%
43.8
5%
45.7
-0%
39.8
13%
42.2
8%
44.6
3%
Maximum Bottom *
45
40.9
9%
41.2
8%
42.1
6%
49.4
-10%
38.4
15%
34.4
24%
44.8
-0%
Idle Upper Side *
25.6
24.2
5%
26.3
-3%
28.5
-11%
32.5
-27%
26.7
-4%
26.2
-2%
28.8
-13%
Idle Bottom *
25
24.6
2%
26.2
-5%
28.9
-16%
33.1
-32%
27.6
-10%
28.5
-14%
28.8
-15%

* ... smaller is better

Energy Management

Power Consumption

In idle mode, the Zenbook is very conservative with its energy, only consuming up to 6.5 watts. The Core M Zenbooks behave similarly. Unsurprisingly, of course, under load the Core i7 model needs more energy than its Core M counterparts. Under medium load (3D Mark 2006), the energy consumption rate rises to 30.8 watts. Things look much the same when the CPU is working at full capacity (Prime95). Here the system uses a constant 30.4 watts. As a result of the CPU and GPU throttling, the power consumption drops to 27 watts in the stress test.

Power Consumption
Off / Standbydarklight 0.1 / 0.1 Watt
Idledarkmidlight 2.6 / 6.2 / 6.5 Watt
Load midlight 30.8 / 27 Watt
 color bar
Key: min: dark, med: mid, max: light        Voltcraft VC 940
Asus Zenbook UX305LA-FC012H
5500U, HD Graphics 5500
Asus Zenbook UX305FA-FC004H
5Y10, HD Graphics 5300
Asus ZenBook UX305FA-FB003H
5Y10, HD Graphics 5300
Apple MacBook Air 13 inch 2015-03
5650U, HD Graphics 6000
Apple MacBook 12 (Early 2015) 1.1 GHz
5Y31, HD Graphics 5300
Acer Aspire S7-393-75508G25EWS
5500U, HD Graphics 5500
Toshiba KIRA-10D
5500U, HD Graphics 5500
Power Consumption
18%
-13%
-5%
18%
-10%
-3%
Idle Minimum *
2.6
2.6
-0%
3.1
-19%
2.7
-4%
1.7
35%
4
-54%
2.6
-0%
Idle Average *
6.2
6.4
-3%
7.5
-21%
5.7
8%
5.3
15%
5
19%
6.3
-2%
Idle Maximum *
6.5
6.5
-0%
8.6
-32%
6
8%
6
8%
6.5
-0%
6.5
-0%
Load Average *
30.8
15.1
51%
25.2
18%
32.1
-4%
18.5
40%
31.2
-1%
30.9
-0%
Load Maximum *
27
15.5
43%
30.6
-13%
36.2
-34%
29.3
-9%
30.6
-13%
30.9
-14%

* ... smaller is better

Battery Life

In idle mode, the Zenbook's battery holds out for 24:29 h, positioning it between the Apple MacBook Air 13 (Early 2015) (26:12 h) and the Dell XPS 13 (21:35 h). We use the Battery Eater Reader’s test to determine a notebook's battery life in idle mode. The display runs at the lowest setting, the energy-saving profile is active, and the wireless modules are turned off. Under load, the Zenbook shuts off after 1:48 h. Once again, the Asus computer situates itself between the MacBook Air 13 (1:37 h) and the XPS 13 (2:25 h). We ascertain the run time under load using the Battery Eater Classic test. Here the screen brightness is set to maximum, and the high-performance profile and wireless modules are activated.

In our WLAN test, which is designed to simulate practical, everyday use, the Core i7 Zenbook runs for 9:29 h. The MacBook Air 13 (10:20) and the Dell XPS 13 (9:58) both come in ahead of our Asus machine here. In this test, we run a script that automatically loads a new webpage every 40 seconds. The “balanced” profile is active and the display brightness is set to about 150 cd/m². We test the computer's video playback run time by playing Big Buck Bunny (H.264 encoding, 1920x1080 pixels) in a continuous loop. The wireless modules are deactivated and the display brightness is set to about 150 cd/m². Here the Zenbook chugged along for 9:42 h. We did not run this test on the Apple and Dell competitors.

All in all, the Zenbook's battery life is superb. In the WLAN test, it ran even longer than the Full HD Core M model. Credit for this improvement goes to the Core i7 model's bigger battery (56 Wh vs. 45 Wh).

Asus treats the Zenbook to a bigger battery.
Asus treats the Zenbook to a bigger battery.
Battery Runtime
Idle (without WLAN, min brightness)
24h 29min
WiFi Surfing v1.3 (IE 11)
9h 29min
Big Buck Bunny H.264 1080p
9h 42min
Load (maximum brightness)
1h 48min
Asus Zenbook UX305LA-FC012H
56 Wh
Asus Zenbook UX305FA-FC004H
45 Wh
Asus ZenBook UX305FA-FB003H
45 Wh
Apple MacBook Air 13 inch 2015-03
54 Wh
Apple MacBook 12 (Early 2015) 1.1 GHz
40 Wh
Acer Aspire S7-393-75508G25EWS
47 Wh
Toshiba KIRA-10D
52 Wh
Dell XPS 13-9343 Non-Touch
54 Wh
Battery Runtime
-10%
-1%
2%
-2%
-21%
2%
9%
Reader / Idle
1469
781
-47%
1572
7%
1407
-4%
838
-43%
1399
-5%
1295
-12%
Load
108
189
75%
97
-10%
155
44%
107
-1%
135
25%
145
34%
WiFi
408
WiFi v1.3
569
514
-10%
620
9%
456
-20%
464
-18%
518
-9%
598
5%
H.264
582
396
-32%
426
-27%
570
-2%

Pros

+ Bright, high-contrast, matte IPS display
+ Stable, high-quality case
+ Very good input devices
+ Very good battery life
+ Usually runs quietly
+ Always remains cool
+ Quick SSD
+ Can be serviced

Cons

- No keyboard backlighting

Verdict

In review: Asus Zenbook UX305LA-FC012H. Test model courtesy of notebooksbilliger.de.
In review: Asus Zenbook UX305LA-FC012H. Test model courtesy of notebooksbilliger.de.

Asus' Zenbook UX305 is a very thin, lightweight, and chic subnotebook. The Core i7 processor gives the computer a huge performance boost compared to its Core M counterparts. In terms of ergonomics, the new Core i7 only left the manufacturer with a minor limitation: The processor can no longer be passively cooled. In everyday use, however, the fan is hardly noticeable. In general, it stands still. When it comes to thermal management, the Core i7 notebook is on par with the Core M models. Asus did not just outfit our current test device with a stronger processor -- they also installed a bigger battery. As a result, the Zenbook's battery life is even better than that of its already long-lasting Core M siblings. Otherwise, the new Core i7 subnotebook proves to exhibit the same positive features as the Core M models. The fast solid-state drive enables the system to run swiftly. The bright, high-contrast, matte IPS Full HD panel renders display content brilliantly.

A strong processor and bigger battery turn a good subnotebook into an even better one. Potential buyers can now decide which is more important: Silent operation or as much performance power as possible.

Asus Zenbook UX305LA-FC012H - 02/16/2016 v5
Sascha Mölck

Chassis
96 /  98 → 98%
Keyboard
88%
Pointing Device
93%
Connectivity
48 / 80 → 61%
Weight
71 / 78 → 84%
Battery
91%
Display
89%
Games Performance
57 / 68 → 84%
Application Performance
83 / 87 → 95%
Temperature
89 / 91 → 98%
Noise
92%
Audio
56 / 91 → 62%
Camera
40 / 85 → 47%
Average
76%
88%
Subnotebook - Weighted Average

Pricecompare

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> Notebook / Laptop Reviews and News > Reviews > Archive of our own reviews > Asus Zenbook UX305LA (Core i7) Subnotebook Review
Sascha Mölck, 2015-10- 8 (Update: 2015-10- 9)