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戴尔 Latitude 12 E7270 笔记本电脑简短评测

街霸。 戴尔的Latitude 7000系列是商务设备市场高品质的代名词。我们的深入评测将会考量这台最新的12.5寸机型能否达到同样的水准,戴尔能否战胜其它同类产品。
Business Ultrabook Skylake Laptop / Notebook
Dell Latitude 12 E7270 (Latitude 12 Series)
Processor
Intel Core i5-6300U 2 x 2.4 GHz @ 3 GHz, Skylake
Graphics adapter
Intel HD Graphics 520 - 1024 (shared) MB VRAM, Core: 1000 MHz, Memory: 1064 MHz
Memory
8 GB 
, DDR4-2133, 单通道, 两个内存槽一个已占用,最大支持32 GB
Display
12.50 inch 16:9, 1920 x 1080 pixel 176 PPI, 非触控, LG LP125WF4, IPS LED, glossy: no
Mainboard
Intel Skylake-U Premium PCH
Storage
Liteon L8H-256V2G, 256 GB 
, M.2 2280, SATA III
Soundcard
RealTek ALC3235
Connections
3 USB 3.0 / 3.1 Gen1, 1 HDMI, 1 DisplayPort, 1 Kensington Lock, 1 Docking Station Port, Audio Connections: 整合耳机麦克风接口, Card Reader: SD 4.0, 1 SmartCard, 1 Fingerprint Reader, NFC
Networking
Intel Ethernet Connection I219-LM (10/100/1000MBit/s), Intel Dual Band Wireless-AC 8260 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4.2
Size
height x width x depth (in mm): 18 x 310 x 215
Battery
55 Wh Lithium-Polymer
Operating System
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: 720p
Additional features
Speakers: 立体声, Keyboard: 6 行 孤岛式, Keyboard Light: yes, 36 Months Warranty
Weight
1.384 kg, Power Supply: 331 g
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Maximum opening angle: 180°
Maximum opening angle: 180°
12.5-inch screen
Rear view of the E7270
Display lid with striking hinges
Laptop's underside
311 mm 219 mm 18.9 mm 1.3 kg310 mm 215 mm 18 mm 1.4 kg305.5 mm 208.5 mm 20.3 mm 1.4 kg304 mm 201 mm 17 mm 1.2 kg305 mm 211 mm 14.3 mm 1.2 kg297 mm 210 mm 1 mm 5.7 g
Left: Kensington Lock, SmartCard reader
Left: Kensington Lock, SmartCard reader
Right: Combo headphone/microphone jack, SD card reader, USB 3.0, SIM-card slot
Right: Combo headphone/microphone jack, SD card reader, USB 3.0, SIM-card slot
Rear: Gigabit Ethernet, HDMI, mDP, 2x USB 3.0, power-in
Rear: Gigabit Ethernet, HDMI, mDP, 2x USB 3.0, power-in
Networking
iperf Server (receive) TCP 1 m 512KB
Dell Latitude 12 E7270
Intel Dual Band Wireless-AC 8260
635 MBit/s
Dell Latitude 13 7370
Intel Dual Band Wireless-AC 8260
634 MBit/s 0%
Lenovo ThinkPad X260-20F6007RGE
Intel Dual Band Wireless-AC 8260
620 MBit/s -2%
iperf Client (transmit) TCP 1 m 512KB
Lenovo ThinkPad X260-20F6007RGE
Intel Dual Band Wireless-AC 8260
488 MBit/s +8%
Dell Latitude 13 7370
Intel Dual Band Wireless-AC 8260
466 MBit/s +3%
Dell Latitude 12 E7270
Intel Dual Band Wireless-AC 8260
451 MBit/s
The innards
The innards
The magnesium base cover
The magnesium base cover
323
cd/m²
321
cd/m²
339
cd/m²
325
cd/m²
353
cd/m²
337
cd/m²
326
cd/m²
344
cd/m²
342
cd/m²
Distribution of brightness
LG LP125WF4 tested with X-Rite i1Pro 2
Maximum: 353 cd/m² (Nits) Average: 334.4 cd/m² Minimum: 15 cd/m²
Brightness Distribution: 91 %
Center on Battery: 354 cd/m²
Contrast: 751:1 (Black: 0.47 cd/m²)
ΔE Color 7.79 | 0.5-29.43 Ø5
ΔE Greyscale 7.38 | 0.57-98 Ø5.3
58.87% sRGB (Argyll 1.6.3 3D)
37.72% AdobeRGB 1998 (Argyll 1.6.3 3D)
41.07% AdobeRGB 1998 (Argyll 2.2.0 3D)
59.2% sRGB (Argyll 2.2.0 3D)
39.7% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.43
Dell Latitude 12 E7270
IPS LED, 1920x1080
Lenovo ThinkPad X260-20F6007RGE
IPS, 1920x1080
HP EliteBook 820 G3
TN LED, 1366x768
Dell Latitude 13 7370
IPS, 1920x1080
Dell XPS 13 9350 WQXGA
IPS, 3200x1800
Display
13%
-2%
31%
58%
Display P3 Coverage
39.7
44.71
13%
38.9
-2%
52.2
31%
63.6
60%
sRGB Coverage
59.2
66.1
12%
58.5
-1%
78.3
32%
92.3
56%
AdobeRGB 1998 Coverage
41.07
46.23
13%
40.2
-2%
53.9
31%
65.4
59%
Response Times
11%
-26%
-24%
-18%
Response Time Grey 50% / Grey 80% *
38.4 ?(17.2, 21.2)
32.8 ?(15.6, 17.2)
15%
58 ?(24.8, 33.2)
-51%
50.4 ?(20.4, 30)
-31%
50.8 ?(18.4, 32.4)
-32%
Response Time Black / White *
28.8 ?(10.8, 18)
27.2 ?(12.4, 14.8)
6%
29.2 ?(12, 17.2)
-1%
33.6 ?(13.2, 20.4)
-17%
29.6 ?(6, 23.6)
-3%
PWM Frequency
Screen
14%
-19%
19%
37%
Brightness middle
353
337
-5%
244
-31%
261
-26%
307.5
-13%
Brightness
334
322
-4%
240
-28%
241
-28%
297
-11%
Brightness Distribution
91
91
0%
84
-8%
85
-7%
92
1%
Black Level *
0.47
0.32
32%
0.6
-28%
0.26
45%
0.207
56%
Contrast
751
1053
40%
407
-46%
1004
34%
1486
98%
Colorchecker dE 2000 *
7.79
5.71
27%
9
-16%
4.3
45%
4.18
46%
Colorchecker dE 2000 max. *
15.19
15.39
-1%
15.73
-4%
8.66
43%
7.84
48%
Greyscale dE 2000 *
7.38
5.15
30%
9.48
-28%
5.82
21%
4.94
33%
Gamma
2.43 91%
2.38 92%
2.44 90%
2.44 90%
2.31 95%
CCT
6158 106%
6881 94%
11116 58%
6771 96%
7645 85%
Color Space (Percent of AdobeRGB 1998)
37.72
42.38
12%
37.18
-1%
49.18
30%
59
56%
Color Space (Percent of sRGB)
58.87
65.62
11%
58.63
0%
77.84
32%
92
56%
Total Average (Program / Settings)
13% / 13%
-16% / -16%
9% / 16%
26% / 34%

* ... smaller is better

Grayscale (pre-calibration)
Grayscale (pre-calibration)
ColorChecker (pre-calibration)
ColorChecker (pre-calibration)
Saturation Sweeps (pre-calibration)
Saturation Sweeps (pre-calibration)
Grayscale (post-calibration)
Grayscale (post-calibration)
ColorChecker (post-calibration)
ColorChecker (post-calibration)
Saturation Sweeps (post-calibration)
Saturation Sweeps (post-calibration)

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
28.8 ms ... rise ↗ and fall ↘ combined↗ 10.8 ms rise
↘ 18 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 0.1 (minimum) to 240 (maximum) ms. » 72 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (21.6 ms).
       Response Time 50% Grey to 80% Grey
38.4 ms ... rise ↗ and fall ↘ combined↗ 17.2 ms rise
↘ 21.2 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 52 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (33.9 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

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

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 18071 (minimum: 5 - maximum: 3846000) Hz was measured.

CPUZ overview
CPUZ overview
GPUZ overview
GPUZ overview
DPC Latency check
DPC Latency check
Cinebench R15
CPU Multi 64Bit
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
324 Points +4%
HP EliteBook 820 G3
Intel Core i5-6300U
311 Points 0%
Dell Latitude 12 E7270
Intel Core i5-6300U
311 Points
Dell XPS 13 9350 WQXGA
Intel Core i7-6560U
303 Points -3%
Dell Latitude 12 E7250
Intel Core i5-5300U
264 Points -15%
Dell Latitude 13 7370
Intel Core m5-6Y57
180 Points -42%
CPU Single 64Bit
Dell XPS 13 9350 WQXGA
Intel Core i7-6560U
132 Points +6%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
128 Points +3%
Dell Latitude 12 E7270
Intel Core i5-6300U
124 Points
HP EliteBook 820 G3
Intel Core i5-6300U
123 Points -1%
Dell Latitude 12 E7250
Intel Core i5-5300U
114 Points -8%
Dell Latitude 13 7370
Intel Core m5-6Y57
101 Points -19%
Cinebench R11.5
CPU Multi 64Bit
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
3.57 Points +3%
Dell Latitude 12 E7270
Intel Core i5-6300U
3.47 Points
Dell XPS 13 9350 WQXGA
Intel Core i7-6560U
3.45 Points -1%
Dell Latitude 12 E7250
Intel Core i5-5300U
2.94 Points -15%
Dell Latitude 13 7370
Intel Core m5-6Y57
2.03 Points -41%
CPU Single 64Bit
Dell XPS 13 9350 WQXGA
Intel Core i7-6560U
1.52 Points +7%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
1.47 Points +4%
Dell Latitude 12 E7270
Intel Core i5-6300U
1.42 Points
Dell Latitude 12 E7250
Intel Core i5-5300U
1.33 Points -6%
Dell Latitude 13 7370
Intel Core m5-6Y57
1.16 Points -18%
Cinebench R11.5 CPU Single 64Bit
1.42 Points
Cinebench R11.5 CPU Multi 64Bit
3.47 Points
Cinebench R11.5 OpenGL 64Bit
29.22 fps
Cinebench R15 CPU Single 64Bit
124 Points
Cinebench R15 CPU Multi 64Bit
311 Points
Cinebench R15 OpenGL 64Bit
35.91 fps
Cinebench R15 Ref. Match 64Bit
97.8 %
Help
PCMark 8
Home Score Accelerated v2
Dell Latitude 12 E7270
Intel Core i5-6300U, 8192, Liteon L8H-256V2G
3420 Points
HP EliteBook 820 G3
Intel Core i5-6300U, 8192, Samsung SM951 MZVPV256HDGL m.2 PCI-e
3400 Points -1%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U, 8192, Liteonit LCH-512V2S
3284 Points -4%
Dell Latitude 13 7370
Intel Core m5-6Y57, 8192, Toshiba NVMe THNSN5256GPU7
3048 Points -11%
Dell XPS 13 9350 WQXGA
Intel Core i7-6560U, 16384, Samsung PM951 NVMe 512 GB
2928 Points -14%
Dell Latitude 12 E7250
Intel Core i5-5300U, 8192, Samsung PM851 Series MZMTE256HMHP
2772 Points -19%
Work Score Accelerated v2
HP EliteBook 820 G3
Intel Core i5-6300U, 8192, Samsung SM951 MZVPV256HDGL m.2 PCI-e
4581 Points +4%
Dell Latitude 12 E7270
Intel Core i5-6300U, 8192, Liteon L8H-256V2G
4395 Points
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U, 8192, Liteonit LCH-512V2S
4341 Points -1%
Dell Latitude 13 7370
Intel Core m5-6Y57, 8192, Toshiba NVMe THNSN5256GPU7
4238 Points -4%
Dell XPS 13 9350 WQXGA
Intel Core i7-6560U, 16384, Samsung PM951 NVMe 512 GB
3438 Points -22%
PCMark 8 Home Score Accelerated v2
3420 points
PCMark 8 Work Score Accelerated v2
4395 points
Help
CrystalDiskMark 3.0
Write 4k
Samsung SM951 MZVPV256HDGL m.2 PCI-e
HD Graphics 520, 6300U, Samsung SM951 MZVPV256HDGL m.2 PCI-e
134.1 MB/s +52%
Liteon L8H-256V2G
HD Graphics 520, 6300U, Liteon L8H-256V2G
88 MB/s
Liteonit LCH-512V2S
HD Graphics 520, 6500U, Liteonit LCH-512V2S
83.6 MB/s -5%
Read 4k
Samsung SM951 MZVPV256HDGL m.2 PCI-e
HD Graphics 520, 6300U, Samsung SM951 MZVPV256HDGL m.2 PCI-e
51 MB/s +105%
Liteonit LCH-512V2S
HD Graphics 520, 6500U, Liteonit LCH-512V2S
27.22 MB/s +9%
Liteon L8H-256V2G
HD Graphics 520, 6300U, Liteon L8H-256V2G
24.89 MB/s
Liteon L8H-256V2G
Sequential Read: 498.4 MB/s
Sequential Write: 286.7 MB/s
4K Read: 24.89 MB/s
4K Write: 88 MB/s
4K QD32 Read: 280.5 MB/s
4K QD32 Write: 241.9 MB/s
3DMark - 1280x720 Cloud Gate Standard Score
Dell XPS 13 9350 WQXGA
Intel Iris Graphics 540
6730 Points +28%
Lenovo ThinkPad X260-20F6007RGE
Intel HD Graphics 520
5321 Points +1%
Dell Latitude 12 E7270
Intel HD Graphics 520
5250 Points
HP EliteBook 820 G3
Intel HD Graphics 520
5164 Points -2%
Dell Latitude 12 E7250
Intel HD Graphics 5500
4633 Points -12%
Dell Latitude 13 7370
Intel HD Graphics 515
3481 Points -34%
3DMark 11 - 1280x720 Performance
Dell XPS 13 9350 WQXGA
Intel Iris Graphics 540
2039 Points +42%
Dell Latitude 12 E7270
Intel HD Graphics 520
1433 Points
HP EliteBook 820 G3
Intel HD Graphics 520
1408 Points -2%
Lenovo ThinkPad X260-20F6007RGE
Intel HD Graphics 520
1406 Points -2%
Dell Latitude 13 7370
Intel HD Graphics 515
1094 Points -24%
Dell Latitude 12 E7250
Intel HD Graphics 5500
927 Points -35%
3DMark 11 Performance
1433 points
3DMark Ice Storm Standard Score
47956 points
3DMark Cloud Gate Standard Score
5250 points
3DMark Fire Strike Score
698 points
Help
low med. high ultra
BioShock Infinite (2013) 38 25 19 5
Battlefield 4 (2013) 35 25 16 5
Rise of the Tomb Raider (2016) 14 9 5

Noise Level

Idle
28.9 / 28.9 / 28.9 dB(A)
Load
31.3 / 37.6 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   ECM8000 + Voltcraft SL-451 (15 cm distance)   environment noise: 28.9 dB(A)
Max. Load
 44.3 °C41.1 °C34.6 °C 
 40.7 °C39.3 °C31.3 °C 
 32 °C32.8 °C31.7 °C 
Maximum: 44.3 °C
Average: 36.4 °C
41 °C52.6 °C35.6 °C
40.4 °C39.5 °C34.2 °C
34.5 °C35.8 °C33 °C
Maximum: 52.6 °C
Average: 38.5 °C
Power Supply (max.)  45.7 °C | Room Temperature 23 °C | Fluke 62 Max
(±) The average temperature for the upper side under maximal load is 36.4 °C / 98 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 44.3 °C / 112 F, compared to the average of 35.9 °C / 97 F, ranging from 21.4 to 59 °C for the class Subnotebook.
(-) The bottom heats up to a maximum of 52.6 °C / 127 F, compared to the average of 39.4 °C / 103 F
(+) In idle usage, the average temperature for the upper side is 30.2 °C / 86 F, compared to the device average of 30.7 °C / 87 F.
(+) The palmrests and touchpad are reaching skin temperature as a maximum (32.8 °C / 91 F) and are therefore not hot.
(-) The average temperature of the palmrest area of similar devices was 28.3 °C / 82.9 F (-4.5 °C / -8.1 F).
E7270's speakers...
E7270's speakers...
...compared with the Macbook 12 (Reference for compact devices)
...compared with the Macbook 12 (Reference for compact devices)
Power Consumption
Off / Standbydarklight 0.27 / 0.6 Watt
Idledarkmidlight 3.8 / 6.7 / 7.2 Watt
Load midlight 27.2 / 30.2 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Currently we use the Metrahit Energy, a professional single phase power quality and energy measurement digital multimeter, for our measurements. Find out more about it here. All of our test methods can be found here.
Dell Latitude 12 E7270
55 Wh
Lenovo ThinkPad X260-20F6007RGE
46 Wh
HP Elitebook 820 G2-J8R58EA
46 Wh
Dell Latitude 12 E7250
52 Wh
Dell XPS 13 9350 WQXGA
56 Wh
Dell Latitude 13 7370
34 Wh
Power Consumption
-2%
-5%
-23%
-41%
0%
Idle Minimum *
3.8
3.5
8%
3.1
18%
4.1
-8%
7.2
-89%
5
-32%
Idle Average *
6.7
5.5
18%
5.8
13%
8.3
-24%
9.3
-39%
7.5
-12%
Idle Maximum *
7.2
6.7
7%
6.5
10%
9.4
-31%
11.6
-61%
8
-11%
Load Average *
27.2
28.9
-6%
30.5
-12%
31.6
-16%
31.9
-17%
15.3
44%
Load Maximum *
30.2
42.1
-39%
46.3
-53%
40.4
-34%
29.9
1%
26.8
11%

* ... smaller is better

Battery Runtime - WiFi Websurfing
Dell Latitude 12 E7270
55 Wh
508 min
Lenovo ThinkPad X260-20F6007RGE
46 Wh
501 min -1%
Dell Latitude 13 7370
34 Wh
367 min -28%
HP Elitebook 820 G2-J8R58EA
46 Wh
338 min -33%
Dell XPS 13 9350 WQXGA
56 Wh
311 min -39%
Battery Runtime
Idle (without WLAN, min brightness)
17h 30min
WiFi Websurfing
8h 28min
Load (maximum brightness)
2h 33min

Pros

+ 坚固的机身
+ 非常优秀的电池续航
+ 不错的背光键盘
+ 明亮的IPS屏幕
+ 出色的接口布局
+ SD读卡器性能优秀
+ 三年质保
+ 出色的可扩展性
+ 清凉安静

Cons

- 较弱的屏幕色域覆盖
- 不支持指点杆,一般的触控版
- SATA III固态硬盘而非PCIe接口固态硬盘
- 摄像头效果较差
In review: Dell Latitude 12 E7270. Test model coutesy of Dell Germany
In review: Dell Latitude 12 E7270. Test model coutesy of Dell Germany

Latitude 7000系列的Skylake更新没有让我们失望。E7270是戴尔为商务用户带来的一款强调高便携性的高品质设备。它的屏幕具备300尼特的高亮度,甚至高于戴尔配置表提供的数字,同时它的电池续航也十分出色,机身小巧轻盈。归功于坚固的机身材质,用户在移动中不需特别担心这台设备的安全。另外E7270也特别灵活多变,它搭配了布局合理的丰富接口,这也是它设计出色的机身的一贯优势。E7270应该完全可以作为便携办公设备满足用户的需要。常见的商务功能如安全功能和扩展坞也一应俱全。

我们认为对于商务用户来说它十分值得推荐。不过,惠普 820 G3联想 ThinkPad X260也不落于下风。它们的最大区别在于一些细节。这台Latitude没有搭配指点杆,这对于商务设备来说十分让人意外,相比竞争设备可能会成为它的一个弱点。尽管它搭配的55瓦时电池为它在电池续航上占据了一定优势,但联想设备支持Power Bridge技术更胜一筹。E7270的另外一个弱点是它屏幕的色彩还原。不过,联想机型也只是略占上风(我们只测试了惠普的高清屏幕机型,作为比较可能不太公平)。

戴尔带来了一台无懈可击的办公设备。不过,如果用户不需要一些特定的商务功能的话,这台Latitude可能会被自家的XPS 13抢去一些潜在用户。

如果考虑到商务市场之外的设备的话,情况就会比较复杂。戴尔自己的XPS 13提供了尺寸更大更优秀的屏幕,更现代的窄边框设计。同时它的售价较低,由于搭配了Thunderbolt接口也能更好的适应未来使用。另一方面,它的可扩展性不够优秀,在亚笔记本竞争中也缺少一些商务功能的支持。

 

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。 

Dell Latitude 12 E7270 - 06/30/2016 v5.1(old)
Benjamin Herzig

Chassis
85 /  98 → 87%
Keyboard
85%
Pointing Device
83%
Connectivity
69 / 80 → 86%
Weight
70 / 35-78 → 81%
Battery
91%
Display
85%
Games Performance
54 / 68 → 80%
Application Performance
85 / 87 → 97%
Temperature
87 / 91 → 96%
Noise
96%
Audio
60 / 91 → 66%
Average
79%
86%
Subnotebook - Weighted Average

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> Notebookcheck中文版(NBC中国) > 评测 > 戴尔 Latitude 12 E7270 笔记本电脑简短评测
Benjamin Herzig, 2016-07-10 (Update: 2016-07-10)