东芝 Portege Z20t-B 变形本简短评测
PT15BE-00E00FGR (Portege Z20 Series)
Processor
Intel Core M-5Y71 2 x 1.2 - 2.9 GHz, Broadwell
Graphics adapter
Intel HD Graphics 5300, Core: 900 MHz, RAM: 800 MHz, 双通道内存, 10.18.10.3977
Memory
8 GB
, 双通道 LPDDR3-1600, 板载, 无法扩展
Display
12.50 inch 16:9, 1920 x 1080 pixel, 电容式(10点触控) + 手写笔, native pen support, Toshiba TOS508F, IPS-面板, LED-背光, glossy: no, detachable screen
Mainboard
Intel Broadwell-Y PCH-LP (Premium)
Storage
Toshiba HG6 THNSNJ256GVNU, 256 GB
, 198 GB free
Weight
1.493 kg, Power Supply: 150 g
Price
2000 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.
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Toshiba TOS508F tested with X-Rite i1Pro 2
Maximum: 342 cd/m² (Nits) Average: 301.2 cd/m²Brightness Distribution: 76 %
Center on Battery: 341 cd/m²
Contrast: 870:1 (Black: 0.393 cd/m²)
ΔE Color 9.69 | 0.5-29.43 Ø4.91
ΔE Greyscale 9.27 | 0.5-98 Ø5.2
40.4% AdobeRGB 1998 (Argyll 1.6.3 3D)
44.1% AdobeRGB 1998 (Argyll 2.2.0 3D)
63.6% sRGB (Argyll 2.2.0 3D)
42.63% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.95
| Toshiba Portege Z20t-B-10C 1.920 x 1.080; IPS-Panel | Lenovo ThinkPad Helix 2 1.920 x 1.080; IPS-Panel | Microsoft Surface Pro 3 2.160 x 1.440; IPS-Panel | Dell Venue 11 Pro 7140 1.920 x 1.080; IPS-Panel | |
|---|---|---|---|---|
| Display | 46% | |||
| Display P3 Coverage | 42.63 | 63.6 49% | ||
| sRGB Coverage | 63.6 | 88.8 40% | ||
| AdobeRGB 1998 Coverage | 44.1 | 65.6 49% | ||
| Screen | 29% | 26% | 22% | |
| Brightness middle | 342 | 365 7% | 355.3 4% | 386 13% |
| Brightness | 301 | 342 14% | 338 12% | 357 19% |
| Brightness Distribution | 76 | 86 13% | 91 20% | 84 11% |
| Black Level * | 0.393 | 0.329 16% | 0.33 16% | 0.4 -2% |
| Contrast | 870 | 1109 27% | 1077 24% | 965 11% |
| Colorchecker dE 2000 * | 9.69 | 4.37 55% | 4.72 51% | 3.71 62% |
| Greyscale dE 2000 * | 9.27 | 2.8 70% | 6.53 30% | 5.4 42% |
| Gamma | 2.95 75% | 2.3 96% | 2.17 101% | 2.33 94% |
| CCT | 6010 108% | 6595 99% | 6707 97% | 6666 98% |
| Color Space (Percent of AdobeRGB 1998) | 40.4 | 59.37 47% | ||
| Total Average (Program / Settings) | 29% /
29% | 36% /
31% | 22% /
22% |
* ... smaller is better
Toshiba HG6 THNSNJ256GVNU
Transfer Rate Minimum:
253.3 MB/s
Transfer Rate Maximum:
413.9 MB/s
Transfer Rate Average:
334.2 MB/s
Access Time:
0.1 ms
Burst Rate:
200.4 MB/s
CPU Usage:
2.5 %
| PCMark 7 - Score (sort by value) | |
| Toshiba Portege Z20t-B-10C | |
| Lenovo ThinkPad Helix 2 | |
| Microsoft Surface Pro 3 | |
| Dell Venue 11 Pro 7140 | |
| Toshiba Portege Z10t-A2111 | |
| PCMark 8 | |
| Home Score Accelerated v2 (sort by value) | |
| Toshiba Portege Z20t-B-10C | |
| Lenovo ThinkPad Helix 2 | |
| Dell Venue 11 Pro 7140 | |
| Toshiba Portege Z10t-A2111 | |
| Work Score Accelerated v2 (sort by value) | |
| Toshiba Portege Z20t-B-10C | |
| Lenovo ThinkPad Helix 2 | |
| Dell Venue 11 Pro 7140 | |
| Toshiba Portege Z10t-A2111 | |
| Creative Score Accelerated v2 (sort by value) | |
| Toshiba Portege Z20t-B-10C | |
| Lenovo ThinkPad Helix 2 | |
| Toshiba Portege Z10t-A2111 | |
| PCMark 7 Score | 4421 points | |
| PCMark 8 Home Score Accelerated v2 | 2816 points | |
| PCMark 8 Creative Score Accelerated v2 | 3263 points | |
| PCMark 8 Work Score Accelerated v2 | 3936 points | |
Help | ||
| 3DMark 06 Standard Score | 5273 points | |
| 3DMark 11 Performance | 775 points | |
| 3DMark Ice Storm Standard Score | 35835 points | |
| 3DMark Cloud Gate Standard Score | 3585 points | |
| 3DMark Fire Strike Score | 453 points | |
Help | ||
| low | med. | high | ultra | |
|---|---|---|---|---|
| Tomb Raider (2013) | 40.3 | 20.5 | 13.5 | |
| Alien: Isolation (2014) | 23.9 | 15.9 | 8.5 | |
| F1 2014 (2014) | 39 | 25 | 14 |
(±) The average temperature for the upper side under maximal load is 35.2 °C / 95 F, compared to the average of 30.3 °C / 87 F for the devices in the class Convertible.
(-) The maximum temperature on the upper side is 48.3 °C / 119 F, compared to the average of 35.4 °C / 96 F, ranging from 19.6 to 60 °C for the class Convertible.
(±) The bottom heats up to a maximum of 43.2 °C / 110 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 26.5 °C / 80 F, compared to the device average of 30.3 °C / 87 F.
(-) The palmrests and touchpad can get very hot to the touch with a maximum of 43 °C / 109.4 F.
(-) The average temperature of the palmrest area of similar devices was 28 °C / 82.4 F (-15 °C / -27 F).
(-) The maximum temperature on the upper side is 48.3 °C / 119 F, compared to the average of 35.4 °C / 96 F, ranging from 19.6 to 60 °C for the class Convertible.
(±) The bottom heats up to a maximum of 43.2 °C / 110 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 26.5 °C / 80 F, compared to the device average of 30.3 °C / 87 F.
(-) The palmrests and touchpad can get very hot to the touch with a maximum of 43 °C / 109.4 F.
(-) The average temperature of the palmrest area of similar devices was 28 °C / 82.4 F (-15 °C / -27 F).
Power Consumption
| Off / Standby |   0 / 0.1 Watt |
| Idle |  2.4 / 4.6 / 5.6 Watt |
| Load |
15.6 / 30.7 Watt |
    
| |
Key:
min: ,
med: ,
max: Extech Power Analyzer 380803 | |
| Toshiba Portege Z20t-B-10C 72 Wh | Lenovo ThinkPad Helix 2 35 Wh | Microsoft Surface Pro 3 42 Wh | Dell Venue 11 Pro 7140 38 Wh | |
|---|---|---|---|---|
| Battery Runtime | -46% | -48% | -41% | |
| Reader / Idle | 1616 | 964 -40% | 1096 -32% | 777 -52% |
| H.264 | 787 | 360 -54% | ||
| WiFi v1.3 | 760 | |||
| Load | 348 | 197 -43% | 124 -64% | 244 -30% |
| WiFi | 396 | 504 | 562 |
Pros
+ 考究的机身工艺
+ 高品质输入设备
+ 支持手写笔
+ 防反射IPS屏幕，显示效果无可挑剔
+ 非常优秀的日常使用性能
+ 被动散热
+ 出色的电池续航时间
Cons
- 仅12个月质保
- 无升级空间
- 无指纹识别器
- 价格昂贵
现代变形本变得越来越轻便而强劲，给我们带来了很多的惊喜——一台采用被动散热Core-M处理器的设备在日常情况下几乎不会比台式电脑慢。不过除东芝以外，联想或戴尔等竞争对手也为他们的设备采用了同样的硬件平台。那么如果你可以用更少的钱买到ThinkPad Helix 2或Venue 11 Pro的话，Portege Z20t会有什么让你值得付出近2000欧元（约13864人民币）的优势呢？在它们之间我们必须保持公正，东芝随机附带了很多配件，对于其他机型来说这些配件则需要单独购买。除了两根手写笔和集成的LTE模组，我们还必须提到它附带第二块电池的键盘底座，这为它的超长续航提供了动力。这台Portege的磨砂屏幕也是另外一个独特之处，在户外使用时会有很大的帮助。这台二合一笔记本的质量毫无问题：它的机身工艺非常优秀，而输入设备也可以适合经常打字的用户。
整体上，Portege Z20t是一台非常适合预算充足、需要全面而高便携性办公设备的商务用户选择。个人用户可以找到与之功能相近而售价更低的其他产品。
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。
Toshiba Portege Z20t-B-10C
- 04/18/2016 v5.1 (old)
Till Schönborn
Convertible - Weighted Average
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