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戴尔 Latitude 7280 (7600U, FHD) 笔记本简短评测

更小,更时尚。 戴尔最新的7000系列超便携本在向着高端奢侈消费者级产品转型的同时,通过保持商务本的大部分特性来从众多竞品中脱颖而出。它是否还是一款顶级竞品呢?
Business Kaby Lake Windows
Latitude 7280 (Latitude Series)
Processor
Intel Core i7-7600U 2 x 2.8 - 3.9 GHz, Kaby Lake
Graphics adapter
Intel HD Graphics 620, 21.20.16.4541
Memory
8 GB 
, DDR4-2133
Display
12.50 inch 16:9, 1920 x 1080 pixel 176 PPI, no, AUO236D , IPS, glossy: no
Mainboard
Intel Sunrise Point-LP
Storage
SanDisk X400 M.2 2280 256GB, 256 GB 
Soundcard
Realtek ALC256 @ Intel Sunrise Point-LP PCH - High Definition Audio Controller
Connections
2 USB 3.0 / 3.1 Gen1, 1 USB 3.1 Gen2, 1 Thunderbolt, 1 HDMI, 1 Kensington Lock, Audio Connections: 3.5 mm 复合音频接口, Card Reader: Micro-SDXC, 1 SmartCard, 1 Fingerprint Reader
Networking
Intel Ethernet Connection I219-LM (10/100/1000MBit/s), Intel Dual Band Wireless-AC 8265 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4.2
Size
height x width x depth (in mm): 18 x 305 x 209
Battery
60 Wh Lithium-Ion
Operating System
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: HD 720p
Primary Camera: 1 MPix
Additional features
Speakers: 2.0, Keyboard: 巧克力键盘, Keyboard Light: yes, 36 Months Warranty
Weight
1.3 kg, Power Supply: 294 g
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Latitude E7270 (left) vs. 7280 (right)
Latitude E7270 (bottom) vs. 7280 (top)
Latitude E7270 (bottom) vs. 7280 (top)
Latitude E7270 (bottom) vs. 7280 (top)
Latitude E7270 (bottom) vs. 7280 (top)
Latitude E7270 (bottom) vs. 7280 (top)
321 mm 206 mm 13.1 mm 1.3 kg310 mm 218.9 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 kg305 mm 209 mm 18 mm 1.3 kg297 mm 210 mm 1 mm 5.7 g
Front: no connections
Front: no connections
Rear: no connections
Rear: no connections
Right: 3.5 mm combo audio, MicroSDXC, SIM card tray, USB 3.0 powered, Gigabit Ethernet, Kensington Lock
Right: 3.5 mm combo audio, MicroSDXC, SIM card tray, USB 3.0 powered, Gigabit Ethernet, Kensington Lock
Left: Charging port, USB Type-C Gen 2/Thunderbolt, HDMI, USB 3.0, smart card reader
Left: Charging port, USB Type-C Gen 2/Thunderbolt, HDMI, USB 3.0, smart card reader
SD Card Reader
average JPG Copy Test (av. of 3 runs)
Dell Latitude 12 E7270
 
130.5 MB/s +69%
HP EliteBook 820 G4 Z2V72ET
 
77.8 MB/s +1%
Dell Latitude 7280
 
77 MB/s
Lenovo ThinkPad X260-20F6007RGE
 
63.2 MB/s -18%
maximum AS SSD Seq Read Test (1GB)
Dell Latitude 12 E7270
 
202.6 MB/s +123%
Dell Latitude 7280
 
90.9 MB/s
HP EliteBook 820 G4 Z2V72ET
 
86.6 MB/s -5%
Lenovo ThinkPad X260-20F6007RGE
 
83.5 MB/s -8%
Networking
iperf3 transmit AX12
Dell Latitude 7280
Intel Dual Band Wireless-AC 8265
530 MBit/s
HP EliteBook 820 G4 Z2V72ET
Intel Dual Band Wireless-AC 8265 (jseb)
474 MBit/s -11%
iperf3 receive AX12
Dell Latitude 7280
Intel Dual Band Wireless-AC 8265
641 MBit/s
HP EliteBook 820 G4 Z2V72ET
Intel Dual Band Wireless-AC 8265 (jseb)
506 MBit/s -21%
277
cd/m²
298.7
cd/m²
291.2
cd/m²
290.6
cd/m²
310.4
cd/m²
311.3
cd/m²
301.6
cd/m²
314.1
cd/m²
311
cd/m²
Distribution of brightness
AUO236D tested with X-Rite i1Pro 2
Maximum: 314.1 cd/m² (Nits) Average: 300.7 cd/m²
Brightness Distribution: 88 %
Center on Battery: 310.4 cd/m²
Contrast: 970:1 (Black: 0.32 cd/m²)
ΔE Color 5.9 | 0.5-29.43 Ø4.91
ΔE Greyscale 5.1 | 0.5-98 Ø5.2
65% sRGB (Argyll 1.6.3 3D)
42% AdobeRGB 1998 (Argyll 1.6.3 3D)
45.9% AdobeRGB 1998 (Argyll 2.2.0 3D)
65.4% sRGB (Argyll 2.2.0 3D)
44.41% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.33
Dell Latitude 7280
AUO236D , IPS, 12.5", 1920x1080
Dell Latitude 12 E7270
LG LP125WF4, IPS LED, 12.5", 1920x1080
HP EliteBook 820 G4 Z2V72ET
Chi Mei, IPS, 12.5", 1920x1080
Razer Blade Stealth QHD i7-7500U
Sharp SHP142F (LQ125T1JW02), , 12.5", 2560x1440
Lenovo ThinkPad X260-20F6007RGE
Lenovo N125HCE-GN1, IPS, 12.5", 1920x1080
Display
-10%
0%
51%
1%
Display P3 Coverage
44.41
39.7
-11%
44.45
0%
68.7
55%
44.71
1%
sRGB Coverage
65.4
59.2
-9%
65.5
0%
95.8
46%
66.1
1%
AdobeRGB 1998 Coverage
45.9
41.07
-11%
46.04
0%
69.9
52%
46.23
1%
Response Times
-6%
5%
-11%
6%
Response Time Grey 50% / Grey 80% *
32.4 ?(12.4, 20)
38.4 ?(17.2, 21.2)
-19%
35 ?(16, 19)
-8%
37 ?(19, 18)
-14%
32.8 ?(15.6, 17.2)
-1%
Response Time Black / White *
31.2 ?(9.2, 22)
28.8 ?(10.8, 18)
8%
26 ?(7, 19)
17%
33.4 ?(13.2, 20.2)
-7%
27.2 ?(12.4, 14.8)
13%
PWM Frequency
200 ?(30)
Screen
-11%
2%
22%
6%
Brightness middle
310.4
353
14%
326
5%
402
30%
337
9%
Brightness
301
334
11%
304
1%
382
27%
322
7%
Brightness Distribution
88
91
3%
81
-8%
88
0%
91
3%
Black Level *
0.32
0.47
-47%
0.29
9%
0.45
-41%
0.32
-0%
Contrast
970
751
-23%
1124
16%
893
-8%
1053
9%
Colorchecker dE 2000 *
5.9
7.79
-32%
6.49
-10%
3.6
39%
5.71
3%
Colorchecker dE 2000 max. *
21
15.19
28%
15.95
24%
7.5
64%
15.39
27%
Greyscale dE 2000 *
5.1
7.38
-45%
6.16
-21%
4.3
16%
5.15
-1%
Gamma
2.33 94%
2.43 91%
2.32 95%
2.1 105%
2.38 92%
CCT
6816 95%
6158 106%
7575 86%
6572 99%
6881 94%
Color Space (Percent of AdobeRGB 1998)
42
37.72
-10%
42
0%
62.3
48%
42.38
1%
Color Space (Percent of sRGB)
65
58.87
-9%
65
0%
95.7
47%
65.62
1%
Total Average (Program / Settings)
-9% / -10%
2% / 2%
21% / 24%
4% / 5%

* ... smaller is better

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
31.2 ms ... rise ↗ and fall ↘ combined↗ 9.2 ms rise
↘ 22 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 83 % 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
32.4 ms ... rise ↗ and fall ↘ combined↗ 12.4 ms rise
↘ 20 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. » 40 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (32.8 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 8706 (minimum: 5 - maximum: 343500) Hz was measured.

CPU-Z CPU
CPU-Z CPU
CPU-Z Caches
CPU-Z Caches
CPU-Z Mainboard
CPU-Z Mainboard
CPU-Z Memory
CPU-Z Memory
CPU-Z RAM SPD
CPU-Z RAM SPD
GPU-Z
GPU-Z
Octane v2
Octane v2
JetStream
JetStream
Cinebench R11.5
CPU Single 64Bit
Dell Latitude 7280
Intel Core i7-7600U
1.87 Points
HP EliteBook 820 G4 Z2V72ET
Intel Core i7-7500U
1.65 Points -12%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
1.47 Points -21%
Dell Latitude 12 E7270
Intel Core i5-6300U
1.42 Points -24%
CPU Multi 64Bit
Dell Latitude 7280
Intel Core i7-7600U
3.89 Points
HP EliteBook 820 G4 Z2V72ET
Intel Core i7-7500U
3.66 Points -6%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
3.57 Points -8%
Dell Latitude 12 E7270
Intel Core i5-6300U
3.47 Points -11%
Cinebench R15
CPU Single 64Bit
Dell Latitude 7280
Intel Core i7-7600U
164 Points
Razer Blade Stealth QHD i7-7500U
Intel Core i7-7500U
139 Points -15%
HP EliteBook 820 G4 Z2V72ET
Intel Core i7-7500U
139 Points -15%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
128 Points -22%
Dell Latitude 12 E7270
Intel Core i5-6300U
124 Points -24%
CPU Multi 64Bit
Dell Latitude 7280
Intel Core i7-7600U
351 Points
Razer Blade Stealth QHD i7-7500U
Intel Core i7-7500U
348 Points -1%
HP EliteBook 820 G4 Z2V72ET
Intel Core i7-7500U
329 Points -6%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
324 Points -8%
Dell Latitude 12 E7270
Intel Core i5-6300U
311 Points -11%
Cinebench R11.5 CPU Single 64Bit
1.87 Points
Cinebench R11.5 CPU Multi 64Bit
3.89 Points
Cinebench R11.5 OpenGL 64Bit
36.28 fps
Cinebench R15 CPU Single 64Bit
164 Points
Cinebench R15 CPU Multi 64Bit
351 Points
Cinebench R15 OpenGL 64Bit
39.2 fps
Help
PCMark 8
Home Score Accelerated v2
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
3667 Points
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
3660 Points 0%
Dell Latitude 12 E7270
HD Graphics 520, 6300U, Liteon L8H-256V2G
3420 Points -7%
Razer Blade Stealth QHD i7-7500U
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV256
3362 Points -8%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
3284 Points -10%
Work Score Accelerated v2
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
4957 Points
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
4824 Points -3%
Dell Latitude 12 E7270
HD Graphics 520, 6300U, Liteon L8H-256V2G
4395 Points -11%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
4341 Points -12%
Creative Score Accelerated v2
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
4662 Points
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
4631 Points -1%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
3945 Points -15%
PCMark 8 Home Score Accelerated v2
3667 points
PCMark 8 Creative Score Accelerated v2
4662 points
PCMark 8 Work Score Accelerated v2
4957 points
Help
Dell Latitude 7280
SanDisk X400 M.2 2280 256GB
Dell Latitude 12 E7270
Liteon L8H-256V2G
HP EliteBook 820 G4 Z2V72ET
Samsung PM951 NVMe MZVLV512
Razer Blade Stealth QHD i7-7500U
Samsung PM951 NVMe MZVLV256
Lenovo ThinkPad X260-20F6007RGE
Liteonit LCH-512V2S
CrystalDiskMark 3.0
2%
100%
64%
8%
Read Seq
470.8
498.4
6%
1315
179%
1178
150%
499.6
6%
Write Seq
477.4
286.7
-40%
594
24%
305.4
-36%
403
-16%
Read 512
370.1
661
79%
638
72%
322.9
-13%
Write 512
323.2
594
84%
305.7
-5%
372.4
15%
Read 4k
30.23
24.89
-18%
42.87
42%
38.54
27%
27.22
-10%
Write 4k
59.5
88
48%
151.6
155%
153.4
158%
83.6
41%
Read 4k QD32
344.4
280.5
-19%
568
65%
614
78%
316.5
-8%
Write 4k QD32
183
241.9
32%
491.7
169%
302.7
65%
273.1
49%
SanDisk X400 M.2 2280 256GB
Transfer Rate Minimum: 258.6 MB/s
Transfer Rate Maximum: 367.1 MB/s
Transfer Rate Average: 355.3 MB/s
Access Time: 0.1 ms
Burst Rate: 57.8 MB/s
CPU Usage: 4.3 %
3DMark 11
1280x720 Performance GPU
Razer Blade Stealth QHD i7-7500U
Intel HD Graphics 620, i7-7500U
1631 Points +13%
HP EliteBook 820 G4 Z2V72ET
Intel HD Graphics 620, i7-7500U
1515 Points +5%
Dell Latitude 7280
Intel HD Graphics 620, i7-7600U
1442 Points
Dell Latitude 12 E7270
Intel HD Graphics 520, 6300U
1307 Points -9%
Lenovo ThinkPad X260-20F6007RGE
Intel HD Graphics 520, 6500U
1268 Points -12%
1280x720 Performance Combined
Razer Blade Stealth QHD i7-7500U
Intel HD Graphics 620, i7-7500U
1560 Points +41%
HP EliteBook 820 G4 Z2V72ET
Intel HD Graphics 620, i7-7500U
1279 Points +16%
Lenovo ThinkPad X260-20F6007RGE
Intel HD Graphics 520, 6500U
1242 Points +13%
Dell Latitude 12 E7270
Intel HD Graphics 520, 6300U
1188 Points +8%
Dell Latitude 7280
Intel HD Graphics 620, i7-7600U
1104 Points
3DMark
1280x720 Cloud Gate Standard Graphics
Razer Blade Stealth QHD i7-7500U
Intel HD Graphics 620, i7-7500U
8289 Points +18%
HP EliteBook 820 G4 Z2V72ET
Intel HD Graphics 620, i7-7500U
7618 Points +8%
Dell Latitude 7280
Intel HD Graphics 620, i7-7600U
7032 Points
Lenovo ThinkPad X260-20F6007RGE
Intel HD Graphics 520, 6500U
6287 Points -11%
Dell Latitude 12 E7270
Intel HD Graphics 520, 6300U
6248 Points -11%
1920x1080 Fire Strike Graphics
Razer Blade Stealth QHD i7-7500U
Intel HD Graphics 620, i7-7500U
991 Points +21%
HP EliteBook 820 G4 Z2V72ET
Intel HD Graphics 620, i7-7500U
886 Points +8%
Dell Latitude 7280
Intel HD Graphics 620, i7-7600U
819 Points
Lenovo ThinkPad X260-20F6007RGE
Intel HD Graphics 520, 6500U
791 Points -3%
Dell Latitude 12 E7270
Intel HD Graphics 520, 6300U
748 Points -9%
1920x1080 Ice Storm Extreme Graphics
HP EliteBook 820 G4 Z2V72ET
Intel HD Graphics 620, i7-7500U
39537 Points
3DMark 06 Standard Score
8030 points
3DMark 11 Performance
1538 points
3DMark Ice Storm Standard Score
54025 points
3DMark Cloud Gate Standard Score
5940 points
3DMark Fire Strike Score
772 points
Help
BioShock Infinite
1280x720 Very Low Preset (sort by value)
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
37 fps
Dell Latitude 12 E7270
HD Graphics 520, 6300U, Liteon L8H-256V2G
38 fps +3%
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
41.9 fps +13%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
37.7 fps +2%
1366x768 Medium Preset (sort by value)
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
23 fps
Dell Latitude 12 E7270
HD Graphics 520, 6300U, Liteon L8H-256V2G
25 fps +9%
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
25.9 fps +13%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
22 fps -4%
1366x768 High Preset (sort by value)
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
19 fps
Dell Latitude 12 E7270
HD Graphics 520, 6300U, Liteon L8H-256V2G
19 fps 0%
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
21.3 fps +12%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
18.3 fps -4%
1920x1080 Ultra Preset, DX11 (DDOF) (sort by value)
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
7 fps
Dell Latitude 12 E7270
HD Graphics 520, 6300U, Liteon L8H-256V2G
5 fps -29%
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
6.9 fps -1%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
5.4 fps -23%
lowmed.highultra
BioShock Infinite (2013) 37 23 19 7

Noise Level

Idle
29.4 / 29.4 / 30 dB(A)
Load
30.6 / 32.7 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   BK Precision 732A (15 cm distance)   environment noise: 29.4 dB(A)
Dell Latitude 7280
HD Graphics 620, i7-7600U, SanDisk X400 M.2 2280 256GB
Dell Latitude 12 E7270
HD Graphics 520, 6300U, Liteon L8H-256V2G
HP EliteBook 820 G4 Z2V72ET
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV512
Razer Blade Stealth QHD i7-7500U
HD Graphics 620, i7-7500U, Samsung PM951 NVMe MZVLV256
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
Noise
-1%
-5%
-9%
-4%
off / environment *
29.4
28.9
2%
30.7
-4%
31
-5%
29
1%
Idle Minimum *
29.4
28.9
2%
30.7
-4%
31
-5%
29
1%
Idle Average *
29.4
28.9
2%
30.7
-4%
31
-5%
29
1%
Idle Maximum *
30
28.9
4%
30.7
-2%
31
-3%
29
3%
Load Average *
30.6
31.3
-2%
35.3
-15%
35
-14%
35.1
-15%
Load Maximum *
32.7
37.6
-15%
33.7
-3%
40.5
-24%
37.8
-16%

* ... smaller is better

Max. Load
 41.2 °C39.8 °C31.6 °C 
 33.8 °C34.4 °C27.8 °C 
 26.6 °C27.2 °C24.8 °C 
Maximum: 41.2 °C
Average: 31.9 °C
34 °C45.4 °C40.6 °C
28.6 °C37 °C36.8 °C
27.4 °C30.6 °C31.6 °C
Maximum: 45.4 °C
Average: 34.7 °C
Power Supply (max.)  33 °C | Room Temperature 20 °C | Raytek Raynger ST
(+) The average temperature for the upper side under maximal load is 31.9 °C / 89 F, compared to the average of 29.5 °C / 85 F for the devices in the class Office.
(±) The maximum temperature on the upper side is 41.2 °C / 106 F, compared to the average of 34.3 °C / 94 F, ranging from 21.2 to 62.5 °C for the class Office.
(-) The bottom heats up to a maximum of 45.4 °C / 114 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 25.8 °C / 78 F, compared to the device average of 29.5 °C / 85 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 27.2 °C / 81 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 27.6 °C / 81.7 F (+0.4 °C / 0.7 F).
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2042.140.842.12550.650.250.63153.751.453.74044.245.144.25039.636.939.66338.136.738.18038.83538.810041.335.741.312543.937.143.916046.236.146.220048.132.248.125052.731.952.731552.831.952.84005130.85150049.629.849.663053.92953.980059.428.159.4100059.827.459.8125062.426.962.4160065.626.165.6200060.825.560.8250058.82558.8315054.424.754.4400055.124.355.1500055.42455.4630058.523.858.580005823.5581000060.123.560.11250056.523.456.51600065.123.465.1SPL71.838.671.8N28.43.428.4median 55.4median 26.9median 55.4Delta4.83.54.837.235.837.23833.33836.532.636.53631.33637.229.937.239.231.139.237.828.237.838.828.338.838.725.338.742.125.642.144.424.944.446.323.546.356.222.956.258.221.858.258.220.958.26019.96059.519.359.563.818.963.85918.25958.318.258.359.517.859.564.717.664.76317.66364.817.664.864.917.664.965.617.865.667.117.867.163.717.763.758.217.558.257.317.757.375.130.875.135.91.535.9median 59median 18.2median 596.82.46.8hearing rangehide median Pink NoiseDell Latitude 7280HP EliteBook 820 G4 Z2V72ET
Dell Latitude 7280 audio analysis

(-) | not very loud speakers (71.8 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 7.9% lower than median
(±) | linearity of bass is average (8.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.4% higher than median
(±) | linearity of mids is average (10.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.2% away from median
(+) | highs are linear (6.6% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (22.4% difference to median)
Compared to same class
» 56% of all tested devices in this class were better, 10% similar, 35% worse
» The best had a delta of 7%, average was 21%, worst was 53%
Compared to all devices tested
» 62% of all tested devices were better, 6% similar, 32% worse
» The best had a delta of 4%, average was 25%, worst was 134%

HP EliteBook 820 G4 Z2V72ET audio analysis

(-) | not very loud speakers (66 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 14.6% lower than median
(±) | linearity of bass is average (7.6% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.1% away from median
(+) | mids are linear (4.7% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.8% higher than median
(+) | highs are linear (5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (17.6% difference to median)
Compared to same class
» 45% of all tested devices in this class were better, 8% similar, 47% worse
» The best had a delta of 5%, average was 19%, worst was 53%
Compared to all devices tested
» 31% of all tested devices were better, 8% similar, 61% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Power Consumption
Off / Standbydarklight 0.36 / 0.6 Watt
Idledarkmidlight 4.28 / 5.11 / 5.49 Watt
Load midlight 29.83 / 30.05 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Dell Latitude 7280
i7-7600U, HD Graphics 620, SanDisk X400 M.2 2280 256GB, IPS, 1920x1080, 12.5"
Dell Latitude 12 E7270
6300U, HD Graphics 520, Liteon L8H-256V2G, IPS LED, 1920x1080, 12.5"
HP EliteBook 820 G4 Z2V72ET
i7-7500U, HD Graphics 620, Samsung PM951 NVMe MZVLV512, IPS, 1920x1080, 12.5"
Razer Blade Stealth QHD i7-7500U
i7-7500U, HD Graphics 620, Samsung PM951 NVMe MZVLV256, , 2560x1440, 12.5"
Lenovo ThinkPad X260-20F6007RGE
6500U, HD Graphics 520, Liteonit LCH-512V2S, IPS, 1920x1080, 12.5"
Power Consumption
-8%
6%
-33%
-10%
Idle Minimum *
4.28
3.8
11%
2.7
37%
4.4
-3%
3.5
18%
Idle Average *
5.11
6.7
-31%
4.8
6%
5.8
-14%
5.5
-8%
Idle Maximum *
5.49
7.2
-31%
6.6
-20%
8.6
-57%
6.7
-22%
Load Average *
29.83
27.2
9%
28.5
4%
35.2
-18%
28.9
3%
Load Maximum *
30.05
30.2
-0%
29
3%
52
-73%
42.1
-40%

* ... smaller is better

Battery Runtime
Idle (without WLAN, min brightness)
25h 53min
WiFi Websurfing
11h 22min
Load (maximum brightness)
2h 39min
Dell Latitude 7280
i7-7600U, HD Graphics 620, 60 Wh
Dell Latitude 12 E7270
6300U, HD Graphics 520, 55 Wh
HP EliteBook 820 G4 Z2V72ET
i7-7500U, HD Graphics 620, 49 Wh
Razer Blade Stealth QHD i7-7500U
i7-7500U, HD Graphics 620, 53.6 Wh
Lenovo ThinkPad X260-20F6007RGE
6500U, HD Graphics 520, 46 Wh
Battery Runtime
-21%
-0%
-36%
-36%
Reader / Idle
1553
1050
-32%
1346
-13%
817
-47%
953
-39%
WiFi v1.3
682
508
-26%
566
-17%
498
-27%
501
-27%
Load
159
153
-4%
205
29%
105
-34%
92
-42%

Pros

+ 顶级制造质量
+ 吸引人且专业的外观
+ 强大的综合性能表现
+ 惊人的电池续航时间
+ 便携且轻薄
+ 出色的键盘
+ 运行温度低
+ 系统风扇很少很吵

Cons

- 由于外壳的改变导致扩展链接能力下降(例如缺少扩展坞接口)
- 令人失望的色域表现
- 测试样机的CPU高频噪声相当明显
- 触摸板仅是平均水平
- 有限的CPU性能的能力使得i7处理器的价值成为问题
- 一些维护工作变得更加困难
In review: Dell Latitude 7280. Test model provided by Dell US
In review: Dell Latitude 7280. Test model provided by Dell US

Latitude 7280可能是从几年前Latitude 7000谢列发布以来最大的一次改进。尽管耗费了一些时间,但7280的确是在现有的商务本中引入了更多的消费级奢侈品的元素,这使得它们的知名度和上一代完全不同。其结果就是在保持专业感的同时也带来了一些时尚感,体积上也更有利于携带,但的确是做出了一些妥协。

第一点是可维护性,整体上来说还是很好但是不如上一代。由于设计的变更,对于键盘和屏幕的更换操作明显变的更加困难,这对于IT部门来说将会是一个头疼的问题。接下来是接口,7280的接口安排可能是更加合理的,但却缺少了独立的扩展坞接口,mini-DisplayPort,以及第三个Type-A USB接口(转而采用一个USB Type-C/Thunderbolt接口来代替上述三者)并将前代中完整规格的SD读卡器缩减到microSD规格。我们同时发现该台测试样机无法长期维持CPU高负载工作,而是将会很快降低睿频频率,这显然将会抹去其所搭载的双核Core i7 CPU所带来的性能提升。

除了上述的缺点(其中重要性相对主管),7280依旧保留了上一代的一些(相对小的)缺点。屏幕尽管有着高亮度及分辨率,但在色域表现上依旧不尽人意。触摸板也还仅仅是平均水平(尽管它提供两颗物理按键)。我们很遗憾地说,我们的测试样机依旧有之前很多戴尔超极本有的通病:CPU高频电流声。

尽管它有着潜在的重大缺陷(决定于用户及用途),如果你能偶接受它们,依旧有很多人会喜欢Latitude 7280。

尽管有着上述缺点,也应该考虑到它不少的有点。首先,7280的制造质量无可挑剔,十分坚固企鹅人体工程学设计令人惊奇,这一切都在它轻薄的机身中。电池续航时间极佳,拥有同类产品中最好的键盘。在大多数使用状况下,系统能够安静的运行(出了CPU噪声),同时保持合理的温度。综合系统操作表现的极快的,综合应用基准测试使其竞品无地自容。

对于那些不在乎上述缺点的用户来说,这是一台极为坚固而设计出色的超便携商务本。对于其他人来说, E7270 可能更加的诱人, 亦或者说 EliteBook 820 G4ThinkPad X260 可能是更好的选择。

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 7280 - 04/05/2017 v6 (old)
Steve Schardein

Chassis
91 / 98 → 93%
Keyboard
94%
Pointing Device
72%
Connectivity
64 / 80 → 80%
Weight
71 / 20-67 → 100%
Battery
94%
Display
86%
Games Performance
59 / 68 → 87%
Application Performance
88 / 92 → 96%
Workstation
40%
Temperature
91%
Noise
75%
Audio
70%
Camera
55 / 85 → 65%
Average
75%
87%
Office - Weighted Average

Price comparison

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> Notebookcheck中文版(NBC中国) > 评测 > 戴尔 Latitude 7280 (7600U, FHD) 笔记本简短评测
Steve Schardein, 2017-03-31 (Update: 2017-03-31)