戴尔 Latitude 12 E7270 笔记本电脑简短评测

Name: Dell Latitude 12 E7270
Brand: Dell

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。

Benjamin Herzig, ✓ Tanja Hinum (translated by Yuchen Wang), Published 07/10/2016 🇺🇸 🇩🇪 ...

Business Ultrabook Skylake Laptop / Notebook

Test device courtesy of Dell Deutschland

Download your licensed rating image as PNG / SVG

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, RAM: 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

Links

Dell homepage
Dell notebook section

Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

see all specifications

HP EliteBook 820 G3 Dell Latitude 12 E7270 Lenovo ThinkPad X260-20F6007RGE Dell XPS 13 2016 9350 (FHD, i7-6560U) Dell Latitude 13 7370 DIN A4 ❌

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

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


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 ColorChecker Calman: 7.79 | ∀{0.5-29.43 Ø4.79}
ΔE Greyscale Calman: 7.38 | ∀{0.09-98 Ø5}
58.87% sRGB (Argyll 1.6.3 3D)
37.72% AdobeRGB 1998 (Argyll 1.6.3 3D)
41.07% AdobeRGB 1998 (Argyll 3D)
59.2% sRGB (Argyll 3D)
39.7% Display P3 (Argyll 3D)
Gamma: 2.43
CCT: 6158 K

Download ICC File (X-Rite i1Pro 2)

	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% * (ms)	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 * (ms)	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 (Hz)
Screen		14%	-19%	19%	37%
Brightness middle (cd/m²)	353	337 -5%	244 -31%	261 -26%	307.5 -13%
Brightness (cd/m²)	334	322 -4%	240 -28%	241 -28%	297 -11%
Brightness Distribution (%)	91	91 0%	84 -8%	85 -7%	92 1%
Black Level * (cd/m²)	0.47	0.32 32%	0.6 -28%	0.26 45%	0.207 56%
Contrast (:1)	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

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
28.8 ms ... rise ↗ and fall ↘ combined	↗ 10.8 ms rise
28.8 ms ... rise ↗ and fall ↘ combined	↘ 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. » 75 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (20.3 ms).
↔ Response Time 50% Grey to 80% Grey
38.4 ms ... rise ↗ and fall ↘ combined	↗ 17.2 ms rise
38.4 ms ... rise ↗ and fall ↘ combined	↘ 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 0.165 (minimum) to 636 (maximum) ms. » 56 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (31.7 ms).

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 8167 (minimum: 5 - maximum: 343500) Hz was measured.

Cinebench R15 | Cinebench R11.5

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

... in comparison

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

CrystalDiskMark 3.0

AS SSD

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 | 3DMark 11

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

... in comparison

	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)

	30 dB silent 40 dB(A) audible 50 dB(A) loud
min: , med: , max: ECM8000 + Voltcraft SL-451 (15 cm distance) environment noise: 28.9 dB(A)

Max. Load

Idle


44.3 °C	41.1 °C	34.6 °C
40.7 °C	39.3 °C	31.3 °C
32 °C	32.8 °C	31.7 °C

Maximum: 44.3 °C
Average: 36.4 °C


41 °C	52.6 °C	35.6 °C
40.4 °C	39.5 °C	34.2 °C
34.5 °C	35.8 °C	33 °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 30.8 °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 39.3 °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 30.8 °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 28.2 °C / 82.8 F (-4.6 °C / -8.2 F).

...compared with the Macbook 12 (Reference for compact devices)

Power Consumption

Off / Standby	0.27 / 0.6 Watt
Idle	3.8 / 6.7 / 7.2 Watt
Load	27.2 / 30.2 Watt


Key: min: , med: , max: Metrahit Energy

	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 * (Watt)	3.8	3.5 8%	3.1 18%	4.1 -8%	7.2 -89%	5 -32%
Idle Average * (Watt)	6.7	5.5 18%	5.8 13%	8.3 -24%	9.3 -39%	7.5 -12%
Idle Maximum * (Watt)	7.2	6.7 7%	6.5 10%	9.4 -31%	11.6 -61%	8 -11%
Load Average * (Watt)	27.2	28.9 -6%	30.5 -12%	31.6 -16%	31.9 -17%	15.3 44%
Load Maximum * (Watt)	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	8.5 h
Lenovo ThinkPad X260-20F6007RGE 46 Wh	8.4 h -1%
Dell Latitude 13 7370 34 Wh	6.1 h -28%
HP Elitebook 820 G2-J8R58EA 46 Wh	5.6 h -34%
Dell XPS 13 9350 WQXGA 56 Wh	5.2 h -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

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和联想 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）。