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宏碁 Chromebook R13 CB5-312T-K0YK 变形本简短评测

触控Chromebook。 宏碁的这台变形Chromebook搭配了一块触控IPS屏幕，运行安静且续航出众。它搭配了ARM处理器。这款机型售价约400欧元（约2951人民币）。
ARM Chromebook Convertible / 2-in-1 Touchscreen
Acer Chromebook R13 CB5-312T-K0YK (Chromebook R13 Series)
Processor
Mediatek MT8173C 4 x 2.1 GHz, Cortex-A72/-A53
Graphics adapter
PowerVR GX6250, Core: 700 MHz
Memory
4 GB 
, LPDDR3
Display
13.30 inch 16:9, 1920 x 1080 pixel 157 PPI, 电容式，10点触控，支持主动式手写笔, IPS, glossy: no
Storage
32 GB eMMC Flash, 32 GB 
Connections
2 USB 3.0 / 3.1 Gen1, 1 HDMI, 1 Kensington Lock, Audio Connections: 整合音频接口, Card Reader: micro-SD, Brightness Sensor, Sensors: 加速感应器
Networking
802.11 a/b/g/n/ac (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4
Size
height x width x depth (in mm): 15.5 x 326 x 228
Battery
53.9 Wh, 4670 mAh Lithium-Ion, 11.55 V, Battery runtime (according to manufacturer): 12 h
Operating System
Google Chrome OS
Camera
Webcam: 高清
Additional features
Speakers: 立体声, Keyboard: 孤岛式, Keyboard Light: no, 24 Months Warranty, fanless
Weight
1.49 kg, Power Supply: 272 g
Price
399 Euro
Links
Acer homepage
Acer notebook section
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Size Comparison

❌
339.4 mm 234.9 mm 17.9 mm 1.6 kg333.2 mm 229 mm 19.5 mm 1.5 kg327 mm 228 mm 20.7 mm 1.5 kg326 mm 228 mm 15.5 mm 1.5 kg320 mm 230 mm 21.5 mm 1.6 kg320 mm 220 mm 15 mm 1.2 kg297 mm 210 mm 1 mm 5.7 g
Left: USB 3.1 Gen 1 (Type-C), HDMI, USB 3.1 Gen 1 (Type-A), microSD card reader
Left: USB 3.1 Gen 1 (Type-C), HDMI, USB 3.1 Gen 1 (Type-A), microSD card reader
Right: Volume control, combo audio, power button, cable lock slot
Right: Volume control, combo audio, power button, cable lock slot
205
cd/m²		217
cd/m²		198
cd/m²
201
cd/m²		192
cd/m²		215
cd/m²
208
cd/m²		204
cd/m²		199
cd/m²
Distribution of brightness
tested with X-Rite i1Pro 2
Maximum: 217 cd/m² (Nits) Average: 204.3 cd/m² Minimum: 14 cd/m²
Brightness Distribution: 88 %
Center on Battery: 194 cd/m²
Contrast: 835:1 (Black: 0.23 cd/m²)
ΔE Greyscale 3.99 | 0.5-98 Ø5.2
Gamma: 2.45
Acer Chromebook R13 CB5-312T-K0YK
IPS, 1920x1080, 13.3"		HP Chromebook 13 G1 Core m5
3200x1800, 13.3"		Acer Swift 1 SF114-31-P6F6
TN LED, 1366x768, 14"		Lenovo E31-70 80KX015RGE
TN, 1366x768, 13.3"		Acer Aspire ES1-332-P91H
TN LED, 1366x768, 13.3"		HP Stream 13-c102ng
TN, 1366x768, 13.3"
Display
Display P3 Coverage
40.97
49.25
44.72
40.68
sRGB Coverage
61.5
73.5
67.3
59.8
AdobeRGB 1998 Coverage
42.35
50.9
46.2
42.32
Response Times
-20%
-7%
-3%
-17%
-14%
Response Time Grey 50% / Grey 80% *
38 ?(14, 24)
39.2 ?(18, 21.2)
-3%
32 ?(10, 22)
16%
44.4 ?(22.8, 21.6)
-17%
39 ?(20, 19)
-3%
45 ?(21, 24)
-18%
Response Time Black / White *
23 ?(5, 18)
31.6 ?(11.6, 20)
-37%
30 ?(16, 14)
-30%
20.4 ?(14, 6.4)
11%
30 ?(12, 18)
-30%
25 ?(7, 18)
-9%
PWM Frequency
1389 ?(44)
200 ?(90)
200 ?(90)
1000 ?(90)
201 ?(30)
Screen
-26%
-60%
-66%
-67%
-42%
Brightness middle
192
355.5
85%
270
41%
206
7%
255
33%
190
-1%
Brightness
204
330
62%
247
21%
200
-2%
232
14%
179
-12%
Brightness Distribution
88
90
2%
80
-9%
84
-5%
82
-7%
85
-3%
Black Level *
0.23
0.804
-250%
0.57
-148%
0.6
-161%
0.52
-126%
0.33
-43%
Contrast
835
442
-47%
474
-43%
343
-59%
490
-41%
576
-31%
Greyscale dE 2000 *
3.99
4.35
-9%
12.73
-219%
10.94
-174%
15.01
-276%
10.32
-159%
Gamma
2.45 90%
2.35 94%
2.36 93%
2.76 80%
2.41 91%
2.48 89%
CCT
6380 102%
6269 104%
14629 44%
13282 49%
24382 27%
11884 55%
Colorchecker dE 2000 *
3.75
3.01
9.2
13.12
9.84
Colorchecker dE 2000 max. *
7.15
6.33
14.8
22.98
Color Space (Percent of AdobeRGB 1998)
39
46.92
43
38
Color Space (Percent of sRGB)
62
73.36
68
60
Total Average (Program / Settings)
-23% / -25%
-34% / -46%
-35% / -50%
-42% / -55%
-28% / -35%

* ... smaller is better

Screen Flickering / PWM (Pulse-Width Modulation)

ℹ
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 8774 (minimum: 5 - maximum: 343500) Hz was measured.

Display Response Times

ℹ
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
23 ms ... rise ↗ and fall ↘ combined↗ 5 ms rise
↘ 18 ms fall
The screen shows good response rates in our tests, but may be too slow for competitive gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 47 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (21 ms).
   ↔    Response Time 50% Grey to 80% Grey
38 ms ... rise ↗ and fall ↘ combined↗ 14 ms rise
↘ 24 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.165 (minimum) to 636 (maximum) ms. » 51 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (32.9 ms).
Geekbench 4.0 | Sunspider | JetStream 1.1 | Mozilla Kraken 1.1 | Octane V2 | WebXPRT 2015
Geekbench 4.0
64 Bit Single-Core Score
Acer Aspire ES1-332-P91H
Intel Pentium N4200
1555 Points +7%
Acer Chromebook R13 CB5-312T-K0YK
Mediatek MT8173C
1451 Points
Acer Swift 1 SF114-31-P6F6
Intel Pentium N3710
1179 Points -19%
64 Bit Multi-Core Score
Acer Aspire ES1-332-P91H
Intel Pentium N4200
4162 Points +62%
Acer Swift 1 SF114-31-P6F6
Intel Pentium N3710
3433 Points +34%
Acer Chromebook R13 CB5-312T-K0YK
Mediatek MT8173C
2570 Points
Sunspider - 1.0 Total Score
Acer Chromebook R13 CB5-312T-K0YK
Mediatek MT8173C
578 ms *
HP Stream 13-c102ng
Intel Celeron N3050
407.5 ms * +29%
Acer Aspire ES1-332-P91H
Intel Pentium N4200
232 ms * +60%
HP Chromebook 13 G1 Core m5
Intel Core m5-6Y57
228.8 ms * +60%
JetStream 1.1 - Total Score
HP Chromebook 13 G1 Core m5
Intel Core m5-6Y57
164 Points +188%
Lenovo E31-70 80KX015RGE
Intel Core i3-5005U
106.9 Points +88%
Acer Aspire ES1-332-P91H
Intel Pentium N4200
89.1 Points +56%
Acer Swift 1 SF114-31-P6F6
Intel Pentium N3710
62.9 Points +10%
Acer Chromebook R13 CB5-312T-K0YK
Mediatek MT8173C
57 Points
Mozilla Kraken 1.1 - Total
Acer Swift 1 SF114-31-P6F6
Intel Pentium N3710
4425 ms * -34%
Acer Chromebook R13 CB5-312T-K0YK
Mediatek MT8173C
3297 ms *
Acer Aspire ES1-332-P91H
Intel Pentium N4200
3027 ms * +8%
HP Chromebook 13 G1 Core m5
Intel Core m5-6Y57
1056 ms * +68%
Octane V2 - Total Score
HP Chromebook 13 G1 Core m5
Intel Core m5-6Y57
28478 Points +181%
Acer Aspire ES1-332-P91H
Intel Pentium N4200
12856 Points +27%
Acer Chromebook R13 CB5-312T-K0YK
Mediatek MT8173C
10139 Points
Acer Swift 1 SF114-31-P6F6
Intel Pentium N3710
9032 Points -11%
WebXPRT 2015 - Overall
HP Chromebook 13 G1 Core m5
Intel Core m5-6Y57
347 Points +151%
Acer Aspire ES1-332-P91H
Intel Pentium N4200
210 Points +52%
Acer Chromebook R13 CB5-312T-K0YK
Mediatek MT8173C
138 Points

* ... smaller is better

3DMark | GFXBench (DX / GLBenchmark) 2.7 | GFXBench 3.0 | GFXBench 3.1 | GFXBench
3DMark - 1280x720 offscreen Ice Storm Unlimited Score
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
24021 Points +48%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
16197 Points
GFXBench (DX / GLBenchmark) 2.7
1920x1080 T-Rex Offscreen
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
47.2 fps +57%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
30 fps
T-Rex Onscreen
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
57.3 fps +173%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
21 fps
GFXBench 3.0
1920x1080 1080p Manhattan Offscreen
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
18.9 fps +35%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
14 fps
on screen Manhattan Onscreen OGL
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
29.2 fps +356%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
6.4 fps
GFXBench 3.1
1920x1080 Manhattan ES 3.1 Offscreen
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
14.1 fps +57%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
9 fps
on screen Manhattan ES 3.1 Onscreen
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
23.5 fps +434%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
4.4 fps
GFXBench
1920x1080 Car Chase Offscreen
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
10.3 fps +171%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
3.8 fps
on screen Car Chase Onscreen
Acer Aspire ES1-332-P91H
Intel HD Graphics 505, Intel Pentium N4200
16.6 fps +326%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, Mediatek MT8173C
3.9 fps
Max. Load
 30.3 °C30.6 °C23.3 °C 
 25.7 °C28 °C23.4 °C 
 23.3 °C23.2 °C22.5 °C 
Maximum: 30.6 °C
Average: 25.6 °C
23.1 °C28.6 °C29.5 °C
22.9 °C27 °C26.8 °C
23.1 °C23.8 °C24.6 °C
Maximum: 29.5 °C
Average: 25.5 °C
Power Supply (max.)  28 °C | Room Temperature 21 °C | FIRT 550-Pocket
(+) The average temperature for the upper side under maximal load is 25.6 °C / 78 F, compared to the average of 29.8 °C / 86 F for the devices in the class Netbook.
(+) The maximum temperature on the upper side is 30.6 °C / 87 F, compared to the average of 33.1 °C / 92 F, ranging from 21.6 to 53.2 °C for the class Netbook.
(+) The bottom heats up to a maximum of 29.5 °C / 85 F, compared to the average of 36.6 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 21.9 °C / 71 F, compared to the device average of 29.8 °C / 86 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 23.3 °C / 73.9 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 29.3 °C / 84.7 F (+6 °C / 10.8 F).
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2042.735.842.7253933.3393139.532.639.54040.631.340.65041.829.941.86344.131.144.18044.328.244.31004528.34512545.625.345.616047.525.647.520051.224.951.225054.323.554.331559.522.959.540060.421.860.450063.120.963.16306619.96680072.719.372.7100071.318.971.3125063.218.263.2160061.918.261.9200063.117.863.1250065.317.665.3315066.417.666.4400067.317.667.3500070.517.670.5630063.817.863.8800065.917.865.91000064.717.764.71250064.617.564.61600065.117.765.1SPL79.130.879.1N46.11.546.1median 63.8median 18.2median 63.8Delta42.4435.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6median 17.84.72.4hearing rangehide median Pink NoiseAcer Chromebook R13 CB5-312T-K0YKApple MacBook 12 (Early 2016) 1.1 GHz
Acer Chromebook R13 CB5-312T-K0YK audio analysis

(±) | speaker loudness is average but good (73 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 13.2% lower than median
(+) | bass is linear (5.6% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.2% away from median
(+) | mids are linear (6.9% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.5% away from median
(+) | highs are linear (5.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (13.9% difference to median)
Compared to same class
» 0% of all tested devices in this class were better, 14% similar, 86% worse
» The best had a delta of 14%, average was 25%, worst was 35%
Compared to all devices tested
» 13% of all tested devices were better, 3% similar, 83% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Apple MacBook 12 (Early 2016) 1.1 GHz audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.3% lower than median
(±) | linearity of bass is average (14.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.4% away from median
(+) | mids are linear (5.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2% away from median
(+) | highs are linear (4.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (10.2% difference to median)
Compared to same class
» 6% of all tested devices in this class were better, 2% similar, 92% worse
» The best had a delta of 5%, average was 19%, worst was 53%
Compared to all devices tested
» 4% of all tested devices were better, 1% similar, 95% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Power Consumption
Off / Standbydarklight 0.3 / 0.32 Watt
Idledarkmidlight 3.8 / 6.2 / 6.6 Watt
Load midlight 11 / 12.7 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Battery Runtime
WiFi Websurfing (Chrome 56)
12h 53min
Battery Runtime - WiFi Websurfing
Acer Chromebook R13 CB5-312T-K0YK
MT8173C, PowerVR GX6250, 53.9 Wh
773 min
Acer Swift 1 SF114-31-P6F6
N3710, HD Graphics 405 (Braswell), 55 Wh
661 min -14%
HP Chromebook 13 G1 Core m5
6Y57, HD Graphics 515, 45 Wh
404 min -48%
HP Stream 13-c102ng
N3050, HD Graphics (Braswell), 37 Wh
370 min -52%
Acer Aspire ES1-332-P91H
Pentium N4200, HD Graphics 505, 36 Wh
365 min -53%
Lenovo E31-70 80KX015RGE
5005U, HD Graphics 5500, 35 Wh
254 min -67%

Pros

+ IPS屏幕面板
+ 全高清分辨率
+ 无噪音系统
+ 超长电池续航
+ 支持USB-C

Cons

- 屏幕昏暗
- 机身不够坚固
- 无升级空间
In review: Acer Chromebook R13 CB5-312T-K0YK. Test model courtesy of Notebooksbilliger.de
In review: Acer Chromebook R13 CB5-312T-K0YK. Test model courtesy of Notebooksbilliger.de

宏碁的Chromebook R13搭载了基于ARM设计的MT8153C系统芯片。这块芯片支持被动散热，这台设备也正是采用了这种设计。因此，这台Chromebook运行完全无噪音。宏碁Chromebook R13并不乏新意。它是一台13.3寸的Chrome变形本。触控屏幕对于Chrome OS来说有一些多余，不过这可能将在它获得对安卓应用的官方支持后有所改变。它提供了高速的ac标准无线网模组，同时带来了出色的电池续航。

充满电池后它将可以满足一整天的工作或学习所需。

这台笔记本电脑的金属机身看上去十分吸引人，不过在稳定性方面还需要改进。它的键盘可以适合家庭使用的需要，但明显不是为专业文字编辑所设计的。它搭配的IPS屏幕可视角度稳定，对比度也不错，但是亮度有些过低。

注：本文是基于完整评测的缩减版本，阅读完整的英文评测，请点击这里。 

Acer Chromebook R13 CB5-312T-K0YK - 02/28/2017 v6 (old)
Sascha Mölck

Chassis
75 / 98 → 77%
Keyboard
70%
Pointing Device
88%
Connectivity
44 / 80 → 55%
Weight
69 / 35-78 → 79%
Battery
96%
Display
85%
Games Performance
32 / 68 → 47%
Application Performance
54 / 87 → 62%
Temperature
97 / 91 → 100%
Noise
100%
Audio
60 / 91 → 66%
Camera
42 / 85 → 49%
Average
70%
81%
Netbook - Weighted Average

Price comparison

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> Notebookcheck中文版（NBC中国） > 评测 > 宏碁 Chromebook R13 CB5-312T-K0YK 变形本简短评测
Sascha Mölck, 2017-03-12 (Update: 2017-03-18)