戴尔 Latitude 5280 (7200U, HD) 笔记本电脑简短评测

Name: Dell Latitude 5280
Brand: Dell

小强人。 戴尔为这款机型设计了一个全新的更轻盈机身，而较老的E-Port也成为了过去式。但是由于缺少对Thunderbolt 3的支持，这台Latitude笔记本电脑的扩展坞连接性会受到严重限制。

Allen Ngo (translated by Yuchen Wang), Published 06/02/2017 🇺🇸 🇭🇺 ...

Laptop / Notebook Business Windows Kaby Lake

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Dell Latitude 5280 (Latitude Series)

Processor

Intel Core i5-7200U 2 x 2.5 - 3.1 GHz, Kaby Lake

Graphics adapter

Intel HD Graphics 620, Core: 300 MHz, 21.20.16.4627

Memory

4 GB

, DDR4-2400, PC4-19200, 17-17-17-39

Display

12.50 inch 16:9, 1366 x 768 pixel 125 PPI, TN LED, ID: AUO106C, Name: AU Optronics B125XW01 V0 (B125XTN), Dell P/N: 9X5G1, glossy: no

Mainboard

Intel Kaby Lake-U iHDCP 2.2 Premium PCH

Storage

Toshiba MQ01ACF050, 500 GB

, 7200 rpm

Soundcard

Intel Kaby Lake-U/Y PCH - High Definition Audio

Connections

3 USB 3.0 / 3.1 Gen1, 1 HDMI, Audio Connections: 3.5毫米整合音频接口, Card Reader: MicroSD 读卡器, Brightness Sensor

Networking

Intel Ethernet Connection I219-LM (10/100/1000MBit/s), Atheros/Qualcomm QCA6174 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4.1

Size

height x width x depth (in mm): 21.4 x 305.2 x 211.3

Battery

51 Wh Lithium-Polymer

Operating System

Microsoft Windows 10 Pro 64 Bit

Camera

Webcam: 720p

Additional features

Speakers: 立体声, Keyboard: 孤岛式, Keyboard Light: yes, 12 Months Warranty

Weight

1.36 kg, Power Supply: 290 g

Price

950 USD

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

Dell Latitude 12 E5270 HP EliteBook 725 G4 Dell Latitude 5280 Lenovo ThinkPad X270-20HMS00T00 Dell Latitude 5289 Toshiba Portege X20W-D-10R DIN A4 ❌

Right: 3.5 mm headphones, USB 3.0, VGA-out, Gigabit RJ-45, Noble Lock

Left: AC adapter, USB Type-C (+ DisplayPort support), HDMI, USB 3.0

SD Card Reader
average JPG Copy Test (av. of 3 runs)
Lenovo ThinkPad X270-20HMS00T00	62.2 MB/s +37%
HP EliteBook 725 G4	60.5 MB/s +33%
Dell Latitude 5280	45.51 MB/s
maximum AS SSD Seq Read Test (1GB)
Dell Latitude 5280	92 MB/s
Lenovo ThinkPad X270-20HMS00T00	88 MB/s -4%
HP EliteBook 725 G4	81.6 MB/s -11%

Networking
iperf3 transmit AX12
Lenovo ThinkPad X270-20HMS00T00 Intel Dual Band Wireless-AC 8265	512 MBit/s +3%
Dell Latitude 5289 Intel Dual Band Wireless-AC 8265	502 MBit/s +1%
Dell Latitude 5280 Atheros/Qualcomm QCA6174	497 MBit/s
iperf3 receive AX12
Lenovo ThinkPad X270-20HMS00T00 Intel Dual Band Wireless-AC 8265	671 MBit/s +3%
Dell Latitude 5280 Atheros/Qualcomm QCA6174	650 MBit/s
Dell Latitude 5289 Intel Dual Band Wireless-AC 8265	579 MBit/s -11%


239.4 cd/m²	230.9 cd/m²	249 cd/m²
245.7 cd/m²	251.8 cd/m²	251.3 cd/m²
248.9 cd/m²	256.6 cd/m²	242.9 cd/m²

Distribution of brightness

tested with X-Rite i1Pro Basic 2

Maximum: 256.6 cd/m² (Nits) Average: 246.3 cd/m² Minimum: 16.29 cd/m²
Brightness Distribution: 90 %
Center on Battery: 251.8 cd/m²
Contrast: 336:1 (Black: 0.75 cd/m²)
ΔE Color 11.3 | 0.5-29.43 Ø4.91
ΔE Greyscale 13.2 | 0.5-98 Ø5.2
59.2% sRGB (Argyll 1.6.3 3D)
37.6% AdobeRGB 1998 (Argyll 1.6.3 3D)
40.67% AdobeRGB 1998 (Argyll 2.2.0 3D)
59.2% sRGB (Argyll 2.2.0 3D)
39.34% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.05

Download ICC File (X-Rite i1Pro Basic 2)

	Dell Latitude 5280 TN LED, 12.5", 1366x768	Dell Latitude 5289 BOE NV12N51, IPS LED, 12.5", 1920x1080	Lenovo ThinkPad X270-20HMS00T00 Innolux N125HCE-GN1, IPS LED, 12.5", 1920x1080	HP EliteBook 725 G4 AU Optronics, IPS, 12.5", 1920x1080	Dell Latitude 12 E5270 BOE05F4, TN, 12.5", 1366x768
Display		9%	12%	24%	-1%
Display P3 Coverage	39.34	42.79 9%	44.6 13% 44.6 13%	49.16 25%	39.06 -1%
sRGB Coverage	59.2	64.3 9%	65.9 11% 65.9 11%	72.3 22%	58.7 -1%
AdobeRGB 1998 Coverage	40.67	44.21 9%	46.11 13% 46.11 13%	50.8 25%	40.36 -1%
Response Times		-17%	-14%	-8%	-6%
Response Time Grey 50% / Grey 80% *	42 ?(21.2, 20.8)	42 ?(22, 20) -0%	40.8 ?(21.2, 19.6) 3%	47 ?(27, 20) -12%	45.2 ?(22.4, 22.8) -8%
Response Time Black / White *	23.2 ?(17.2, 6)	31 ?(18, 13) -34%	30.4 ?(16.4, 14) -31%	24 ?(14, 10) -3%	24 ?(6.8, 17.2) -3%
PWM Frequency		531 ?(90)	26040 ?(50)		1000 ?(90)
Screen		55%	49%	81%	9%
Brightness middle	251.8	336 33%	283 12%	329 31%	161 -36%
Brightness	246	320 30%	281 14%	310 26%	152 -38%
Brightness Distribution	90	90 0%	94 4%	88 -2%	90 0%
Black Level *	0.75	0.34 55%	0.25 67%	0.19 75%	0.29 61%
Contrast	336	988 194%	1132 237%	1732 415%	555 65%
Colorchecker dE 2000 *	11.3	3.45 69%	6.1 46%	2.69 76%	10.31 9%
Colorchecker dE 2000 max. *	23.1	7.95 66%	15.4 33%	4.47 81%	18.58 20%
Greyscale dE 2000 *	13.2	1.68 87%	6 55%	4.23 68%	11.3 14%
Gamma	2.05 ^107%	2.49 ^88%	2.05 ^107%	2.21 ^100%	2.57 ^86%
CCT	14912 ^44%	6782 ^96%	6832 ^95%	6011 ^108%	13574 ^48%
Color Space (Percent of AdobeRGB 1998)	37.6	41 9%	42.26 12%	46 22%	37.32 -1%
Color Space (Percent of sRGB)	59.2	64 8%	65.43 11%	72 22%	58.82 -1%
Total Average (Program / Settings)		16% / 36%	16% / 30%	32% / 58%	1% / 5%

* ... 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
23.2 ms ... rise ↗ and fall ↘ combined	↗ 17.2 ms rise
23.2 ms ... rise ↗ and fall ↘ combined	↘ 6 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. » 49 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (20.9 ms).
↔ Response Time 50% Grey to 80% Grey
42 ms ... rise ↗ and fall ↘ combined	↗ 21.2 ms rise
42 ms ... rise ↗ and fall ↘ combined	↘ 20.8 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. » 64 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (32.8 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 8706 (minimum: 5 - maximum: 343500) Hz was measured.

Cinebench R15 CPU Multi 64 Bit

Cinebench R15 | Cinebench R11.5 | Cinebench R10 | wPrime 2.10

Cinebench R15
CPU Single 64Bit
Dell Latitude 7280 Intel Core i7-7600U	164 Points +27%
Asus Zenbook UX3410UQ-GV077T Intel Core i7-7500U	147 Points +14%
Lenovo ThinkPad T470s-20HF0012US Intel Core i5-7300U	143 Points +11%
Lenovo ThinkPad T460s-20FA003GGE Intel Core i7-6600U	141 Points +9%
Dell Latitude 5280 Intel Core i5-7200U	129 Points
Dell Latitude 5580 Intel Core i5-7200U	127 Points -2%
Dell Latitude E7470 N001LE747014EMEA Intel Core i5-6300U	110 Points -15%
Lenovo Thinkpad 13-20J1001BUS Intel Core i3-7100U	86 Points -33%
HP EliteBook 725 G4 AMD PRO A12-9800B	77 Points -40%
CPU Multi 64Bit
Lenovo ThinkPad T470s-20HF0012US Intel Core i5-7300U	369 Points +13%
Dell Latitude 7280 Intel Core i7-7600U	351 Points +7%
Lenovo ThinkPad T460s-20FA003GGE Intel Core i7-6600U	347 Points +6%
Asus Zenbook UX3410UQ-GV077T Intel Core i7-7500U	331 Points +1%
Dell Latitude 5280 Intel Core i5-7200U	328 Points
Dell Latitude 5580 Intel Core i5-7200U	327 Points 0%
Dell Latitude E7470 N001LE747014EMEA Intel Core i5-6300U	308 Points -6%
Lenovo Thinkpad 13-20J1001BUS Intel Core i3-7100U	256 Points -22%
HP EliteBook 725 G4 AMD PRO A12-9800B	229 Points -30%

Cinebench R11.5
CPU Single 64Bit
Dell Latitude 7280 Intel Core i7-7600U	1.87 Points +27%
Lenovo ThinkPad T470s-20HF0012US Intel Core i5-7300U	1.59 Points +8%
Lenovo ThinkPad T460s-20FA003GGE Intel Core i7-6600U	1.57 Points +7%
Dell Latitude 5280 Intel Core i5-7200U	1.47 Points
Dell Latitude 5580 Intel Core i5-7200U	1.46 Points -1%
Lenovo Thinkpad 13-20J1001BUS Intel Core i3-7100U	1.03 Points -30%
HP EliteBook 725 G4 AMD PRO A12-9800B	0.86 Points -41%
CPU Multi 64Bit
Lenovo ThinkPad T470s-20HF0012US Intel Core i5-7300U	4.13 Points +13%
Dell Latitude 7280 Intel Core i7-7600U	3.89 Points +6%
Lenovo ThinkPad T460s-20FA003GGE Intel Core i7-6600U	3.83 Points +4%
Dell Latitude 5280 Intel Core i5-7200U	3.67 Points
Dell Latitude 5580 Intel Core i5-7200U	3.65 Points -1%
Lenovo Thinkpad 13-20J1001BUS Intel Core i3-7100U	2.85 Points -22%
HP EliteBook 725 G4 AMD PRO A12-9800B	2.47 Points -33%

Cinebench R10
Rendering Multiple CPUs 32Bit
Lenovo ThinkPad T460s-20FA003GGE Intel Core i7-6600U	11798 Points +4%
Asus Zenbook UX3410UQ-GV077T Intel Core i7-7500U	11455 Points +1%
Dell Latitude 5280 Intel Core i5-7200U	11292 Points
Dell Latitude 5580 Intel Core i5-7200U	11214 Points -1%
Lenovo Thinkpad 13-20J1001BUS Intel Core i3-7100U	8718 Points -23%
HP EliteBook 725 G4 AMD PRO A12-9800B	6854 Points -39%
Rendering Single 32Bit
Asus Zenbook UX3410UQ-GV077T Intel Core i7-7500U	5706 Points +14%
Lenovo ThinkPad T460s-20FA003GGE Intel Core i7-6600U	5264 Points +5%
Dell Latitude 5580 Intel Core i5-7200U	4999 Points 0%
Dell Latitude 5280 Intel Core i5-7200U	4999 Points
Lenovo Thinkpad 13-20J1001BUS Intel Core i3-7100U	3871 Points -23%
HP EliteBook 725 G4 AMD PRO A12-9800B	2621 Points -48%

wPrime 2.10 - 1024m
Lenovo Thinkpad 13-20J1001BUS Intel Core i3-7100U	645 s * -38%
Dell Latitude E7470 N001LE747014EMEA Intel Core i5-6300U	523 s * -12%
Dell Latitude 7280 Intel Core i7-7600U	482 s * -3%
HP EliteBook 725 G4 AMD PRO A12-9800B	475.7 s * -2%
Dell Latitude 5580 Intel Core i5-7200U	469 s * -0%
Dell Latitude 5280 Intel Core i5-7200U	467.3 s *
Lenovo ThinkPad T470s-20HF0012US Intel Core i5-7300U	446.9 s * +4%

* ... smaller is better

Cinebench R10 Shading 32Bit

7829

Cinebench R10 Rendering Multiple CPUs 32Bit

11292

Cinebench R10 Rendering Single 32Bit

4999

Cinebench R11.5 OpenGL 64Bit

26.68 fps

Cinebench R11.5 CPU Multi 64Bit

3.67 Points

Cinebench R11.5 CPU Single 64Bit

1.47 Points

Cinebench R15 Ref. Match 64Bit

97.7 %

Cinebench R15 OpenGL 64Bit

35.12 fps

Cinebench R15 CPU Multi 64Bit

328 Points

Cinebench R15 CPU Single 64Bit

129 Points

Help

... in comparison

PCMark 8
Home Score Accelerated v2
Lenovo ThinkPad X270-20HMS00T00 HD Graphics 620, i5-7200U, Toshiba NVMe THNSF5512GPUK	3575 Points +5%
Dell Latitude 5289 HD Graphics 620, i5-7300U, SanDisk X400 256GB, SATA (SD8SB8U-256G)	3554 Points +4%
Dell Latitude 5280 HD Graphics 620, i5-7200U, Toshiba MQ01ACF050	3409 Points
Dell Latitude 12 E5270 HD Graphics 520, 6300U, Seagate ST500LM021-1KJ15	3291 Points -3%
HP EliteBook 725 G4 Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP	2665 Points -22%
Work Score Accelerated v2
Dell Latitude 5289 HD Graphics 620, i5-7300U, SanDisk X400 256GB, SATA (SD8SB8U-256G)	4681 Points +7%
Lenovo ThinkPad X270-20HMS00T00 HD Graphics 620, i5-7200U, Toshiba NVMe THNSF5512GPUK	4660 Points +7%
Dell Latitude 5280 HD Graphics 620, i5-7200U, Toshiba MQ01ACF050	4365 Points
Dell Latitude 12 E5270 HD Graphics 520, 6300U, Seagate ST500LM021-1KJ15	4273 Points -2%
HP EliteBook 725 G4 Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP	3885 Points -11%
Creative Score Accelerated v2
Dell Latitude 5280 HD Graphics 620, i5-7200U, Toshiba MQ01ACF050	3928 Points
Dell Latitude 12 E5270 HD Graphics 520, 6300U, Seagate ST500LM021-1KJ15	3588 Points -9%
HP EliteBook 725 G4 Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP	3313 Points -16%

PCMark 8 Home Score Accelerated v2		3409 points
PCMark 8 Creative Score Accelerated v2		3928 points
PCMark 8 Work Score Accelerated v2		4365 points
Help

	Dell Latitude 5280 Toshiba MQ01ACF050	Dell Latitude 5289 SanDisk X400 256GB, SATA (SD8SB8U-256G)	Lenovo ThinkPad X270-20HMS00T00 Toshiba NVMe THNSF5512GPUK	HP EliteBook 725 G4 Samsung PM961 MZVLW256HEHP	Dell Latitude 12 E5270 Seagate ST500LM021-1KJ15
CrystalDiskMark 3.0		9086%	18752%	6641%	-1%
Read Seq	107.5	423.7 294%	1190 1007%	1963 1726%	113.8 6%
Write Seq	95.3	406.4 326%	985 934%	1409 1378%	108.5 14%
Read 512	31.13	260.8 738%	858 2656%	949 2949%	24.9 -20%
Write 512	45.49	255.6 462%	528 1061%	890 1856%	51.9 14%
Read 4k	0.357	22.73 6267%	35.27 9780%	29.75 8233%	0.398 11%
Write 4k	0.827	27.92 3276%	124.5 14954%	47.35 5626%	0.654 -21%
Read 4k QD32	0.737	306.2 41447%	495.3 67105%	139.7 18855%	0.798 8%
Write 4k QD32	0.795	158.8 19875%	418.3 52516%	100.2 12504%	0.636 -20%

HD Tune

CrystalDiskMark 3.0

Toshiba MQ01ACF050

Transfer Rate Minimum: 53.5 MB/s

Transfer Rate Maximum: 125 MB/s

Transfer Rate Average: 104.5 MB/s

Access Time: 16 ms

Burst Rate: 237.9 MB/s

CPU Usage: 1.7 %

3DMark 11 | 3DMark

3DMark 11
1280x720 Performance GPU
Intel Skull Canyon NUC6i7KYK Intel Iris Pro Graphics 580, 6770HQ	3220 Points +146%
Dell Latitude 7480 Intel HD Graphics 620, i7-7600U	1648 Points +26%
Acer Swift 3 SF314-51-731X Intel HD Graphics 520, 6500U	1475 Points +13%
Dell Latitude 5280 Intel HD Graphics 620, i5-7200U	1309 Points
Dell Latitude 5580 Intel HD Graphics 620, i5-7200U	1281 Points -2%
Dell XPS 13 9365-4537 2-in-1 Intel HD Graphics 615, i5-7Y54	1175 Points -10%
Lenovo Yoga 900S-12ISK-80ML Intel HD Graphics 515, 6Y54	803 Points -39%
1280x720 Performance Combined
Intel Skull Canyon NUC6i7KYK Intel Iris Pro Graphics 580, 6770HQ	2784 Points +212%
Dell Latitude 7480 Intel HD Graphics 620, i7-7600U	1530 Points +72%
Acer Swift 3 SF314-51-731X Intel HD Graphics 520, 6500U	1519 Points +70%
Dell XPS 13 9365-4537 2-in-1 Intel HD Graphics 615, i5-7Y54	1024 Points +15%
Dell Latitude 5280 Intel HD Graphics 620, i5-7200U	892 Points
Dell Latitude 5580 Intel HD Graphics 620, i5-7200U	891 Points 0%
Lenovo Yoga 900S-12ISK-80ML Intel HD Graphics 515, 6Y54	778 Points -13%

3DMark
1280x720 Cloud Gate Standard Graphics
Intel Skull Canyon NUC6i7KYK Intel Iris Pro Graphics 580, 6770HQ	14594 Points +136%
Dell Latitude 7480 Intel HD Graphics 620, i7-7600U	8555 Points +38%
Acer Swift 3 SF314-51-731X Intel HD Graphics 520, 6500U	7361 Points +19%
Dell Latitude 5280 Intel HD Graphics 620, i5-7200U	6189 Points
Dell Latitude 5580 Intel HD Graphics 620, i5-7200U	6152 Points -1%
Lenovo Yoga 900S-12ISK-80ML Intel HD Graphics 515, 6Y54	4309 Points -30%
1920x1080 Fire Strike Graphics
Intel Skull Canyon NUC6i7KYK Intel Iris Pro Graphics 580, 6770HQ	1903 Points +183%
Dell Latitude 7480 Intel HD Graphics 620, i7-7600U	1008 Points +50%
Dell Latitude 5280 Intel HD Graphics 620, i5-7200U	672 Points
Dell Latitude 5580 Intel HD Graphics 620, i5-7200U	663 Points -1%
Lenovo Yoga 900S-12ISK-80ML Intel HD Graphics 515, 6Y54	504 Points -25%
1920x1080 Ice Storm Extreme Graphics
Intel Skull Canyon NUC6i7KYK Intel Iris Pro Graphics 580, 6770HQ	98218 Points +188%
Dell Latitude 7480 Intel HD Graphics 620, i7-7600U	48374 Points +42%
Dell Latitude 5280 Intel HD Graphics 620, i5-7200U	34077 Points
Dell Latitude 5580 Intel HD Graphics 620, i5-7200U	33478 Points -2%
Lenovo Yoga 900S-12ISK-80ML Intel HD Graphics 515, 6Y54	22497 Points -34%

3DMark 11 Performance		1378 points
3DMark Ice Storm Standard Score		49846 points
3DMark Cloud Gate Standard Score		5281 points
3DMark Fire Strike Score		633 points
Help

... in comparison

	low	med.	high	ultra
BioShock Infinite (2013)	29.9	20.9	18
Rise of the Tomb Raider (2016)	14

Noise Level

Idle		32.6 / 32.7 / 32.7 dB(A)
HDD		33 dB(A)
Load		33.4 / 37 dB(A)

	30 dB silent 40 dB(A) audible 50 dB(A) loud
min: , med: , max: BK Precision 732A (15 cm distance) environment noise: 27.6 dB(A)

	Dell Latitude 5280 HD Graphics 620, i5-7200U, Toshiba MQ01ACF050	Dell Latitude 5289 HD Graphics 620, i5-7300U, SanDisk X400 256GB, SATA (SD8SB8U-256G)	Lenovo ThinkPad X270-20HMS00T00 HD Graphics 620, i5-7200U, Toshiba NVMe THNSF5512GPUK	HP EliteBook 725 G4 Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP	Dell Latitude 12 E5270 HD Graphics 520, 6300U, Seagate ST500LM021-1KJ15
Noise		1%	3%	4%	-1%
off / environment *	27.6	30.5 -11%	29 -5%	30.4 -10%	29.2 -6%
Idle Minimum *	32.6	30.5 6%	29 11%	30.4 7%	32.9 -1%
Idle Average *	32.7	30.5 7%	29 11%	30.4 7%	32.9 -1%
Idle Maximum *	32.7	30.5 7%	30.4 7%	30.4 7%	32.9 -1%
Load Average *	33.4	36 -8%	34.1 -2%	31.7 5%	33.7 -1%
Load Maximum *	37	34.6 6%	37.6 -2%	34.4 7%	34.9 6%

* ... smaller is better

Max. Load

Idle


40 °C	42.4 °C	48.4 °C
36.2 °C	38.2 °C	30.8 °C
26.8 °C	27.4 °C	28.4 °C

Maximum: 48.4 °C
Average: 35.4 °C


36.8 °C	49.2 °C	41.4 °C
29.8 °C	43.4 °C	42 °C
30.2 °C	28.2 °C	29.4 °C

Maximum: 49.2 °C
Average: 36.7 °C

Power Supply (max.) 32 °C | Room Temperature 21 °C | Fluke 62 Mini IR Thermometer

(±) The average temperature for the upper side under maximal load is 35.4 °C / 96 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 48.4 °C / 119 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 49.2 °C / 121 F, compared to the average of 39.4 °C / 103 F
(+) In idle usage, the average temperature for the upper side is 25 °C / 77 F, compared to the device average of 30.8 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 28.4 °C / 83.1 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 28.3 °C / 82.9 F (-0.1 °C / -0.2 F).

Dell Latitude 5280 audio analysis

(±) | speaker loudness is average but good (81.1 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 20.2% lower than median
(±) | linearity of bass is average (12.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4% away from median
(±) | linearity of mids is average (9.5% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.8% higher than median
(±) | linearity of highs is average (9.8% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (25.4% difference to median)
Compared to same class
» 84% of all tested devices in this class were better, 4% similar, 13% worse
» The best had a delta of 5%, average was 19%, worst was 53%
Compared to all devices tested
» 76% of all tested devices were better, 5% similar, 19% 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 / Standby	0.31 / 0.47 Watt
Idle	5.7 / 6.9 / 7.1 Watt
Load	28.3 / 30.2 Watt


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

	Dell Latitude 5280 i5-7200U, HD Graphics 620, Toshiba MQ01ACF050, TN LED, 1366x768, 12.5"	Dell Latitude 5289 i5-7300U, HD Graphics 620, SanDisk X400 256GB, SATA (SD8SB8U-256G), IPS LED, 1920x1080, 12.5"	Lenovo ThinkPad X270-20HMS00T00 i5-7200U, HD Graphics 620, Toshiba NVMe THNSF5512GPUK, IPS LED, 1920x1080, 12.5"	HP EliteBook 725 G4 PRO A12-9800B, Radeon R7 (Bristol Ridge), Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 12.5"	Dell Latitude 12 E5270 6300U, HD Graphics 520, Seagate ST500LM021-1KJ15, TN, 1366x768, 12.5"
Power Consumption		12%	-1%	0%	2%
Idle Minimum *	5.7	2.7 53%	3.5 39%	4.5 21%	3.9 32%
Idle Average *	6.9	5.1 26%	5.8 16%	6.3 9%	6 13%
Idle Maximum *	7.1	7.6 -7%	7.6 -7%	8.3 -17%	6.6 7%
Load Average *	28.3	33 -17%	33.2 -17%	27.6 2%	28.9 -2%
Load Maximum *	30.2	29 4%	40.4 -34%	34.5 -14%	41.7 -38%

* ... smaller is better

Battery Runtime

Idle (without WLAN, min brightness)		18h 32min
WiFi Websurfing		7h 50min
Load (maximum brightness)		2h 18min

	Dell Latitude 5280 i5-7200U, HD Graphics 620, 51 Wh	Dell Latitude 5289 i5-7300U, HD Graphics 620, 60 Wh	Lenovo ThinkPad X270-20HMS00T00 i5-7200U, HD Graphics 620, 46 Wh	HP EliteBook 725 G4 PRO A12-9800B, Radeon R7 (Bristol Ridge), 49 Wh	Dell Latitude 12 E5270 6300U, HD Graphics 520, 47 Wh
Battery Runtime		35%	-21%	-22%	-18%
Reader / Idle	1112	1728 55%	1023 -8%	700 -37%	772 -31%
WiFi v1.3	470	708 51%	324 -31%	380 -19%	398 -15%
Load	138	136 -1%	104 -25%	123 -11%	128 -7%

Pros

+ 支持多种不同容量电池；电池续航长

+ 支持VGA，SIM卡槽，USB-C，智能卡（可选）

+ 无降频问题，出色的Turbo Boost加速性能

+ 使用电池也可以完全发挥系统性能

+ 坚固的机身；MIL STD 810G标准

+ 相比E5270更轻更小巧

+ 平稳的风扇噪音，无脉冲

+ 相对安静的键盘

+ 易于维护

+ 可选的WiGig支持

Cons

- 让人遗憾的768p TN屏幕；对比度和色域覆盖均较差

- 相比5480/5580安全功能较弱

- 键盘布局拥挤；反馈绵软

- 仅支持一个内部存储插槽

- 不支持Thunderbolt 3，E-Port和NFC

- 不支持HQ系列处理器

- 系统风扇一直开启

- 鼠标按键反馈弱

- 无指点杆

许多商务笔记本电脑的主要卖点都包括了可以方便地连接扩展坞或外置电池。而最新的Latitude 5280/5480/5580系列则放弃了E-Port扩展坞接口，因为Thunderbolt 3正在逐渐成为扩展功能性的核心技术。遗憾的是Latitude 5280对这两者都没有提供支持，因此相比5480或5580灵活度较低，尽管它的尺寸较小也更加便携。另外，它的散热风扇会一直保持开启，我们认为这对于一台采用U系列超低电压处理器的设备来说并没有必要。

如果我们所提到的缺点并不算严重，5280在其他方面的表现可以说是十分出色。它的USB-C接口可以用于连接DisplayPort外置显示器，而全新设计的机身也在不影响坚固性的前提下相比E5270轻了很多。它的电池续航表现在使用中等容量电池时已经十分出色，保持提供VGA和HDMI接口可能会在大学或会议中提供不小的便利。特别是它的处理器性能十分出色，可以在高负载下保持Turbo Boost频率。

我们建议用户放弃768p屏幕机型，升级到更明亮1080p屏幕搭配固态硬盘的机型。在分辨率和亮度上的提高可以让笔记本电脑的使用更舒适，如果不时常连接外置显示器的话十分值得考虑。

相对绵软的键盘可能需要一些时间适应，而对于手较大的用户可能需要考虑尺寸更大的笔记本电脑。5280十分适合长时间出门在外使用笔记本电脑，而非主要在家中或办公室中使用的用户。

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 5280 - 05/27/2017 v6 ^(old)
Allen Ngo

Chassis

88 / 98 → 90%

Keyboard

81%

Pointing Device

89%

Connectivity

54 / 80 → 67%