Notebookcheck

戴尔 Latitude 12 5285 二合一变形本简短评测

Bernhard Pechlaner (translated by Kangfei Zheng), 05/14/2017
Business Tablet Touchscreen Windows

似曾相识。对于普通的人来说,戴尔Latitude 12 5285 2合1变形本与微软的Surface Pro 4相似,包括屏幕尺寸,整体尺寸,以及可拆卸键盘和触控笔——这两个平板电脑/变形本在某种程度上极度相似。

Dell Latitude 12 5285 2-in-1 (Latitude 12 Series)
Graphics adapter
Intel HD Graphics 620, Core: 1150 MHz, Memory: 933 MHz, 21.20.16.4627
Memory
16384 MB 
, LPDDR3 SDRAM 1866MHz
Display
12.3 inch 3:2, 1920x1280 pixel 188 PPI, 十指触控, native pen support, BOE06DC, IPS, glossy: yes, detachable screen
Mainboard
Intel Kaby Lake-U Premium PCH
Storage
Samsung PM961 MZVLW256HEHP, 256 GB 
Soundcard
Intel Kaby Lake-U/Y PCH - High Definition Audio
Connections
1 USB 3.0 / 3.1 Gen1, 2 USB 3.1 Gen2, 2 DisplayPort, 1 Kensington Lock, Audio Connections: 耳麦合一接口, Card Reader: MicroSD, Brightness Sensor, Sensors: 陀螺仪,电子罗盘 /磁力仪,加速度计
Networking
Intel Dual Band Wireless-AC 8265 (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 9.76 x 292 x 208.8
Battery
42 Wh Lithium-Polymer
Operating System
Microsoft Windows 10 Pro 64 Bit
Camera
Primary Camera: 8 MPix 前置自动对焦
Secondary Camera: 5 MPix 脸部固定对焦
Additional features
Speakers: MaxAudio Pro立体声扬声器, Keyboard: Latitude 5285 Travel Keyboard, Keyboard Light: no, 12 Months Warranty
Weight
1.226 kg, Power Supply: 240 g
Price
2000 USD

 

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Dell Latitude 12 5285 2-in-1
64 MB/s ∼100%
maximum AS SSD Seq Read Test (1GB)
Dell Latitude 12 5285 2-in-1
86.9 MB/s ∼100%
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Asus Transformer 3 Pro T303UA-GN050T
Intel Wireless-AC 7265
560 MBit/s ∼100% +79%
Microsoft Surface Pro 4, Core i5, 128GB
Marvell AVASTAR Wireless-AC Network Controller (Klaus I211)
459 MBit/s ∼82% +47%
Dell Latitude 12 5285 2-in-1
Intel Dual Band Wireless-AC 8265
312 MBit/s ∼56%
iperf3 Client (transmit) TCP 1 m 4M x10
Asus Transformer 3 Pro T303UA-GN050T
Intel Wireless-AC 7265
685 MBit/s ∼100% +54%
Microsoft Surface Pro 4, Core i5, 128GB
Marvell AVASTAR Wireless-AC Network Controller (Klaus I211)
593 MBit/s ∼87% +33%
Dell Latitude 12 5285 2-in-1
Intel Dual Band Wireless-AC 8265
446 MBit/s ∼65%
527.4
cd/m²
518.1
cd/m²
490.1
cd/m²
532.5
cd/m²
523.2
cd/m²
506.9
cd/m²
557.6
cd/m²
512.1
cd/m²
527.3
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 557.6 cd/m² Average: 521.7 cd/m² Minimum: 22.86 cd/m²
Brightness Distribution: 88 %
Center on Battery: 523.2 cd/m²
Contrast: 1246:1 (Black: 0.42 cd/m²)
ΔE Color 4 | - Ø
ΔE Greyscale 5.5 | - Ø
93.97% sRGB (Argyll) 64.86% AdobeRGB 1998 (Argyll)
Gamma: 2.16
Dell Latitude 12 5285 2-in-1
BOE06DC, IPS, 12.3, 1920x1280
Microsoft Surface Pro 4, Core i5, 128GB
Samsung 123YL01-001 ID: SDC3853, IPS, 12.3, 2736x1824
HP Elite x2 1012 G1
LG Philips, IPS, 12.1, 1920x1280
Acer Aspire Switch Alpha 12 SA5-271-70EQ
WST KL.1200W.002 WST2216, IPS, 12, 2160x1440
Asus Transformer 3 Pro T303UA-GN050T
BOE BOE06AC (NV126A1M-N51), IPS, 12.6, 2880x1920
Response Times
-28%
24%
-6%
10%
Response Time Grey 50% / Grey 80% *
42.4 (20.4, 22)
46 (17.2, 28.8, plateau, spikes in between)
-8%
33.2 (15.2, 18)
22%
21 (5, 16)
50%
30 (14, 16)
29%
Response Time Black / White *
30.8 (18, 12.8)
31.2 (6, 25.2, Spikes in between)
-1%
22.8 (10.4, 12.4)
26%
28 (5, 23)
9%
29 (8, 21)
6%
PWM Frequency
210.1
50 (50)
-76%
50 (10)
-76%
200 (90)
-5%
Screen
4%
-23%
-31%
-0%
Brightness
522
396
-24%
319
-39%
367
-30%
307
-41%
Brightness Distribution
88
87
-1%
97
10%
87
-1%
91
3%
Black Level *
0.42
0.36
14%
0.42
-0%
0.56
-33%
0.29
31%
Contrast
1246
1147
-8%
767
-38%
698
-44%
1090
-13%
Colorchecker DeltaE2000 *
4
3.09
23%
6.02
-51%
6.96
-74%
3.91
2%
Greyscale DeltaE2000 *
5.5
3.92
29%
6.29
-14%
7.44
-35%
5.37
2%
Gamma
2.16 111%
2.3 104%
2.4 100%
2.41 100%
2.36 102%
CCT
7546 86%
7333 89%
7712 84%
8126 80%
7812 83%
Color Space (Percent of AdobeRGB 1998)
64.86
61
-6%
47.8
-26%
53
-18%
72
11%
Color Space (Percent of sRGB)
93.97
97
3%
73.2
-22%
83
-12%
98
4%
Total Average (Program / Settings)
-12% / -5%
1% / -13%
-19% / -24%
5% / 3%

* ... 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
30.8 ms ... rise ↗ and fall ↘ combined↗ 18 ms rise
↘ 12.8 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 77 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (26.7 ms).
       Response Time 50% Grey to 80% Grey
42.4 ms ... rise ↗ and fall ↘ combined↗ 20.4 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 0.9 (minimum) to 636 (maximum) ms. » 56 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (42.8 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 detected 210.1 Hz

The display backlight flickers at 210.1 Hz (Likely utilizing PWM) .

The frequency of 210.1 Hz is relatively low, so sensitive users will likely notice flickering and experience eyestrain at the stated brightness setting and below.

In comparison: 57 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 6272 (minimum: 43 - maximum: 142900) Hz was measured.

0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340Tooltip
Cinebench R15 CPU Single 64 Bit
Cinebench R15
CPU Single 64Bit
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
152 Points ∼78%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
Intel Core i7-6500U
128 Points ∼66% -16%
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
122 Points ∼63% -20%
Asus Transformer 3 Pro T303UA-GN050T
Intel Core i7-6500U
117 Points ∼60% -23%
HP Elite x2 1012 G1
Intel Core m5-6Y54
111 Points ∼57% -27%
CPU Multi 64Bit
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
329 Points ∼15%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
Intel Core i7-6500U
320 Points ∼15% -3%
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
306 Points ∼14% -7%
HP Elite x2 1012 G1
Intel Core m5-6Y54
255 Points ∼12% -22%
Asus Transformer 3 Pro T303UA-GN050T
Intel Core i7-6500U
221 Points ∼10% -33%
Cinebench R11.5
CPU Single 64Bit
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
1.76 Points ∼80%
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
1.4 Points ∼63% -20%
Asus Transformer 3 Pro T303UA-GN050T
Intel Core i7-6500U
1.29 Points ∼58% -27%
HP Elite x2 1012 G1
Intel Core m5-6Y54
1.26 Points ∼57% -28%
CPU Multi 64Bit
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
3.62 Points ∼15%
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
3.4 Points ∼14% -6%
HP Elite x2 1012 G1
Intel Core m5-6Y54
2.7 Points ∼11% -25%
Asus Transformer 3 Pro T303UA-GN050T
Intel Core i7-6500U
2.44 Points ∼10% -33%
Cinebench R10
Rendering Single 32Bit
Asus Transformer 3 Pro T303UA-GN050T
Intel Core i7-6500U
7350 Points ∼83% +20%
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
6115 Points ∼69%
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
4656 Points ∼52% -24%
HP Elite x2 1012 G1
Intel Core m5-6Y54
4235 Points ∼48% -31%
Rendering Multiple CPUs 32Bit
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
11532 Points ∼23%
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
10558 Points ∼21% -8%
HP Elite x2 1012 G1
Intel Core m5-6Y54
8731 Points ∼18% -24%
Asus Transformer 3 Pro T303UA-GN050T
Intel Core i7-6500U
7308 Points ∼15% -37%
wPrime 2.0x - 1024m
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
545.624 s * ∼6%
Super Pi Mod 1.5 XS 32M - ---
Dell Latitude 12 5285 2-in-1
Intel Core i7-7600U
688.22 Seconds * ∼3%

* ... smaller is better

Cinebench R10 Shading 32Bit
8463
Cinebench R10 Rendering Multiple CPUs 32Bit
11532
Cinebench R10 Rendering Single 32Bit
6115
Cinebench R11.5 OpenGL 64Bit
39.88 fps
Cinebench R11.5 CPU Multi 64Bit
3.62 Points
Cinebench R11.5 CPU Single 64Bit
1.76 Points
Cinebench R15 Ref. Match 64Bit
97.8 %
Cinebench R15 OpenGL 64Bit
44.98 fps
Cinebench R15 CPU Multi 64Bit
329 Points
Cinebench R15 CPU Single 64Bit
152 Points
Help
PCMark 8
Work Score Accelerated v2
Acer Aspire Switch Alpha 12 SA5-271-70EQ
HD Graphics 520, 6500U, Lite-On CV1-8B512 M.2 512 GB
4219 Points ∼65% +20%
HP Elite x2 1012 G1
HD Graphics 515, 6Y54, Liteon L8H-256V2G
3932 Points ∼60% +12%
Asus Transformer 3 Pro T303UA-GN050T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
3830 Points ∼59% +9%
Microsoft Surface Pro 4, Core i5, 128GB
HD Graphics 520, 6300U, Samsung MZFLV128 NVMe
3697 Points ∼57% +5%
Dell Latitude 12 5285 2-in-1
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
3510 Points ∼54%
Creative Score Accelerated v2
Dell Latitude 12 5285 2-in-1
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
4602 Points ∼49%
Asus Transformer 3 Pro T303UA-GN050T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
4043 Points ∼43% -12%
Microsoft Surface Pro 4, Core i5, 128GB
HD Graphics 520, 6300U, Samsung MZFLV128 NVMe
3736 Points ∼40% -19%
HP Elite x2 1012 G1
HD Graphics 515, 6Y54, Liteon L8H-256V2G
3423 Points ∼37% -26%
Home Score Accelerated v2
Dell Latitude 12 5285 2-in-1
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
4741 Points ∼79%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
HD Graphics 520, 6500U, Lite-On CV1-8B512 M.2 512 GB
3429 Points ∼57% -28%
Asus Transformer 3 Pro T303UA-GN050T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
2985 Points ∼50% -37%
HP Elite x2 1012 G1
HD Graphics 515, 6Y54, Liteon L8H-256V2G
2983 Points ∼50% -37%
Microsoft Surface Pro 4, Core i5, 128GB
HD Graphics 520, 6300U, Samsung MZFLV128 NVMe
2770 Points ∼46% -42%
PCMark 8 Home Score Accelerated v2
4741 points
PCMark 8 Creative Score Accelerated v2
4602 points
PCMark 8 Work Score Accelerated v2
3510 points
Help
Dell Latitude 12 5285 2-in-1
Samsung PM961 MZVLW256HEHP
Microsoft Surface Pro 4, Core i5, 128GB
Samsung MZFLV128 NVMe
HP Elite x2 1012 G1
Liteon L8H-256V2G
Acer Aspire Switch Alpha 12 SA5-271-70EQ
Lite-On CV1-8B512 M.2 512 GB
Asus Transformer 3 Pro T303UA-GN050T
SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
Microsoft Surface Pro 4 Core i7
Samsung MZFLV256 NVMe
CrystalDiskMark 3.0
-37%
-32%
-29%
-41%
-16%
Write 4k QD32
434.5
153.6
-65%
268.4
-38%
260.3
-40%
253.8
-42%
292.3
-33%
Read 4k QD32
493.3
368.3
-25%
285
-42%
296.3
-40%
245.8
-50%
393.1
-20%
Write 4k
72.22
101.5
41%
90.27
25%
81.8
13%
57.65
-20%
106.3
47%
Read 4k
31.75
28.51
-10%
28.31
-11%
32.38
2%
26.11
-18%
40.75
28%
Write 512
589.3
154.2
-74%
295.7
-50%
384
-35%
320.3
-46%
304.3
-48%
Read 512
406
266.3
-34%
351.7
-13%
335.9
-17%
303.1
-25%
396.7
-2%
Write Seq
865.2
154.2
-82%
297.2
-66%
415.3
-52%
402
-54%
304
-65%
Read Seq
1294
666
-49%
500.5
-61%
496.6
-62%
398.9
-69%
833.7
-36%
Samsung PM961 MZVLW256HEHP
Transfer Rate Minimum: 550.9 MB/s
Transfer Rate Maximum: 1109.5 MB/s
Transfer Rate Average: 716 MB/s
Access Time: 0.1 ms
Burst Rate: 193.5 MB/s
CPU Usage: 12.2 %
3DMark 11
1280x720 Performance Combined
Microsoft Surface Pro 4 Core i7
Intel Iris Graphics 540, 6650U
2255 Points ∼14% +51%
Microsoft Surface Pro 4, Core i5, 128GB
Intel HD Graphics 520, 6300U
1509 Points ∼9% +1%
Dell Latitude 12 5285 2-in-1
Intel HD Graphics 620, 7600U
1490 Points ∼9%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
Intel HD Graphics 520, 6500U
1451 Points ∼9% -3%
HP Elite x2 1012 G1
Intel HD Graphics 515, 6Y54
1236 Points ∼8% -17%
Asus Transformer 3 Pro T303UA-GN050T
Intel HD Graphics 520, 6500U
1171 Points ∼7% -21%
1280x720 Performance GPU
Microsoft Surface Pro 4 Core i7
Intel Iris Graphics 540, 6650U
2450 Points ∼5% +54%
Dell Latitude 12 5285 2-in-1
Intel HD Graphics 620, 7600U
1589 Points ∼3%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
Intel HD Graphics 520, 6500U
1481 Points ∼3% -7%
Microsoft Surface Pro 4, Core i5, 128GB
Intel HD Graphics 520, 6300U
1402 Points ∼3% -12%
Asus Transformer 3 Pro T303UA-GN050T
Intel HD Graphics 520, 6500U
1271 Points ∼2% -20%
HP Elite x2 1012 G1
Intel HD Graphics 515, 6Y54
1200 Points ∼2% -24%
3DMark
1920x1080 Fire Strike Graphics
Microsoft Surface Pro 4 Core i7
Intel Iris Graphics 540, 6650U
1477 Points ∼4% +36%
Dell Latitude 12 5285 2-in-1
Intel HD Graphics 620, 7600U
1084 Points ∼3%
Microsoft Surface Pro 4, Core i5, 128GB
Intel HD Graphics 520, 6300U
905 Points ∼2% -17%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
Intel HD Graphics 520, 6500U
886 Points ∼2% -18%
HP Elite x2 1012 G1
Intel HD Graphics 515, 6Y54
797 Points ∼2% -26%
Asus Transformer 3 Pro T303UA-GN050T
Intel HD Graphics 520, 6500U
753 Points ∼2% -31%
1280x720 Cloud Gate Standard Graphics
Microsoft Surface Pro 4 Core i7
Intel Iris Graphics 540, 6650U
11650 Points ∼7% +32%
Dell Latitude 12 5285 2-in-1
Intel HD Graphics 620, 7600U
8850 Points ∼5%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
Intel HD Graphics 520, 6500U
7457 Points ∼5% -16%
Microsoft Surface Pro 4, Core i5, 128GB
Intel HD Graphics 520, 6300U
7455 Points ∼5% -16%
HP Elite x2 1012 G1
Intel HD Graphics 515, 6Y54
6308 Points ∼4% -29%
Asus Transformer 3 Pro T303UA-GN050T
Intel HD Graphics 520, 6500U
6137 Points ∼4% -31%
1920x1080 Ice Storm Extreme Graphics
Microsoft Surface Pro 4 Core i7
Intel Iris Graphics 540, 6650U
68398 Points ∼9% +66%
Dell Latitude 12 5285 2-in-1
Intel HD Graphics 620, 7600U
41229 Points ∼6%
Asus Transformer 3 Pro T303UA-GN050T
Intel HD Graphics 520, 6500U
35725 Points ∼5% -13%
3DMark 11 Performance
1744 points
3DMark Ice Storm Standard Score
12587 points
3DMark Cloud Gate Standard Score
6652 points
3DMark Fire Strike Score
985 points
3DMark Fire Strike Extreme Score
457 points
Help
BioShock Infinite - 1366x768 Medium Preset (sort by value)
Dell Latitude 12 5285 2-in-1
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
32.8 fps ∼10%
Microsoft Surface Pro 4, Core i5, 128GB
HD Graphics 520, 6300U, Samsung MZFLV128 NVMe
30 fps ∼9% -9%
HP Elite x2 1012 G1
HD Graphics 515, 6Y54, Liteon L8H-256V2G
24.6 fps ∼8% -25%
Acer Aspire Switch Alpha 12 SA5-271-70EQ
HD Graphics 520, 6500U, Lite-On CV1-8B512 M.2 512 GB
30 fps ∼9% -9%
Asus Transformer 3 Pro T303UA-GN050T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
26.9 (min: 12.1) fps ∼8% -18%
Microsoft Surface Pro 4 Core i7
Iris Graphics 540, 6650U, Samsung MZFLV256 NVMe
49.1 fps ∼15% +50%
low med. high ultra
Tomb Raider (2013) 88.645.529.713.6fps
BioShock Infinite (2013) 56.532.828.69fps

Noise Level

Idle
28.2 / 28.2 / 28.2 dB(A)
Load
30.4 / 34 dB(A)
 
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm distance)   environment noise: 28.2 dB(A)
Dell Latitude 12 5285 2-in-1
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
Microsoft Surface Pro 4, Core i5, 128GB
HD Graphics 520, 6300U, Samsung MZFLV128 NVMe
Asus Transformer 3 Pro T303UA-GN050T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
Microsoft Surface Pro 4 Core i7
Iris Graphics 540, 6650U, Samsung MZFLV256 NVMe
Noise
-18%
-11%
-12%
off / environment *
28.2
30.7
-9%
Idle Minimum *
28.2
31.5
-12%
30.7
-9%
28.4
-1%
Idle Average *
28.2
31.5
-12%
30.7
-9%
28.6
-1%
Idle Maximum *
28.2
31.5
-12%
30.7
-9%
28.7
-2%
Load Average *
30.4
40.5
-33%
37
-22%
40.8
-34%
Load Maximum *
34
40.7
-20%
37.1
-9%
41.4
-22%

* ... smaller is better

Max. Load
 36.4 °C38 °C38.2 °C 
 34.4 °C33.6 °C26.2 °C 
 31.2 °C30.6 °C29 °C 
Maximum: 38.2 °C
Average: 33.1 °C
29.2 °C48.6 °C48.2 °C
32.6 °C44 °C42.8 °C
32.2 °C35 °C36.6 °C
Maximum: 48.6 °C
Average: 38.8 °C
Power Supply (max.)  42 °C | Room Temperature 21 °C | Raytek Raynger ST
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs20036.837.825034.23631036.236.940035.133.450032.933.663033.235800323210003131.1125029.733.6160029.139.8200028.640.5250027.850.5315027.251.8400026.357.1500025.960.4630025.463.2800024.760.91000024.6641250024.665.11600023.861.42000023.853.52500023.556.53150023.851.94000023.857.55000023.759.46300023.559.18000023.560.810000023.562.612500023.657.816000023.657.1SPL72.436.472.4N30.92.730.9median 24.6Dell Latitude 12 5285 2-in-1median 57.5Delta1.45.435.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6Apple MacBook 12 (Early 2016) 1.1 GHzmedian 17.84.62.4hearing rangehide median Pink Noise
Dell Latitude 12 5285 2-in-1 audio analysis

(±) | speaker loudness is average but good (72.44 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 16.3% lower than median
(±) | linearity of bass is average (11% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4.3% away from median
(±) | linearity of mids is average (11.3% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.6% away from median
(±) | linearity of highs is average (8.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (20% difference to median)
Compared to same class
» 38% of all tested devices in this class were better, 9% similar, 53% worse
» The best had a delta of 11%, average was 23%, worst was 53%
Compared to all devices tested
» 40% of all tested devices were better, 6% similar, 53% worse
» The best had a delta of 3%, average was 22%, worst was 53%

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 (9.3% difference to median)
Compared to same class
» 2% of all tested devices in this class were better, 2% similar, 97% worse
» The best had a delta of 9%, average was 19%, worst was 41%
Compared to all devices tested
» 1% of all tested devices were better, 0% similar, 98% worse
» The best had a delta of 3%, average was 22%, worst was 53%

Power Consumption
Off / Standbydarklight 0.26 / 2.54 Watt
Idledarkmidlight 2.85 / 6.76 / 6.91 Watt
Load midlight 32.88 / 37.41 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Dell Latitude 12 5285 2-in-1
7600U, HD Graphics 620, Samsung PM961 MZVLW256HEHP, IPS, 1920x1280, 12.3
Microsoft Surface Pro 4, Core i5, 128GB
6300U, HD Graphics 520, Samsung MZFLV128 NVMe, IPS, 2736x1824, 12.3
HP Elite x2 1012 G1
6Y54, HD Graphics 515, Liteon L8H-256V2G, IPS, 1920x1280, 12.1
Acer Aspire Switch Alpha 12 SA5-271-70EQ
6500U, HD Graphics 520, Lite-On CV1-8B512 M.2 512 GB, IPS, 2160x1440, 12
Asus Transformer 3 Pro T303UA-GN050T
6500U, HD Graphics 520, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND), IPS, 2880x1920, 12.6
Microsoft Surface Pro 4 Core i7
6650U, Iris Graphics 540, Samsung MZFLV256 NVMe, IPS, 2736x1824, 12.3
Power Consumption
-11%
-0%
-44%
-48%
Idle Minimum *
2.85
4.4
-54%
3.7
-30%
5.5
-93%
6.7
-135%
Idle Average *
6.76
9
-33%
6.8
-1%
9.8
-45%
10.3
-52%
Idle Maximum *
6.91
10.7
-55%
7.6
-10%
11.9
-72%
13.5
-95%
Load Average *
32.88
19.6
40%
22.5
32%
36.1
-10%
26
21%
Load Maximum *
37.41
19.9
47%
34.5
8%
36.7
2%
28.8
23%

* ... smaller is better

Battery Runtime
Idle (without WLAN, min brightness)
17h 55min
WiFi Surfing v1.3
8h 06min
Load (maximum brightness)
1h 45min
Dell Latitude 12 5285 2-in-1
7600U, HD Graphics 620, 42 Wh
Microsoft Surface Pro 4, Core i5, 128GB
6300U, HD Graphics 520, 38 Wh
HP Elite x2 1012 G1
6Y54, HD Graphics 515, 37 Wh
Acer Aspire Switch Alpha 12 SA5-271-70EQ
6500U, HD Graphics 520, 37 Wh
Asus Transformer 3 Pro T303UA-GN050T
6500U, HD Graphics 520, 39 Wh
Microsoft Surface Pro 4 Core i7
6650U, Iris Graphics 540, 38 Wh
Battery Runtime
-7%
-6%
-23%
-39%
-35%
Reader / Idle
1075
899
-16%
732
-32%
644
-40%
426
-60%
654
-39%
WiFi v1.3
486
427
-12%
443
-9%
291
-40%
223
-54%
293
-40%
Load
105
111
6%
130
24%
115
10%
102
-3%
79
-25%

Pros

+ 非常明亮的显示屏
+ 性能优异
+ 很安静
+ 很容易维护/升级
+ 2x USB-C型接口
+ 包括键盘底座和手写笔

Cons

- 变得很热
- 分辨率低于竞争对手
- 没有雷电接口
- 有点沉重
- 即使更昂贵的配置也只有1年保修标准
- 昂贵

戴尔Latitude 12 5285是一个坚固的商务变形本。2合1,且符合人体工程学,运行速度优秀和续航优秀,外观很有吸引力。是的,它看起来很像微软的Surface Pro 4,但是我们老实说,不要指望戴尔采用新外观,而能做到标新立异。可拆卸键盘提供坚实的按键反馈,并提供两种背光强度。触控笔作为额外的输入设备工具,非常好用,并提供了附加的功能,可以启动Microsoft OneNote或其他应用程序。戴尔与竞争对手的不同之处在于两个关键点:首先,虽然显示分辨率较低,但鉴于Latitude的业务导向,我们不认为这是重大缺陷——另外,面板非常明亮,远超竞争对手。另外,2合1笔记本硬件非常易于使用和维护,这同样也是基于平板电脑的变形本的致命弱点。

Latitude的突出特色毫无疑问是其显示效果,它非常亮,平均亮度超过520尼特。

主要让人不喜欢的点是:5285在负载下会非常热,也比竞争对手稍重。增加一个雷电3端口可能会是一个不错的选择。 Latitude非常昂贵的,对于一些用户来说,其他变形本,比如,华硕Transformer 3 Pro或液冷式宏碁 Aspire Switch Alpha 12更具吸引力,即使是它们的续航能力较差。同样,微软的Surface Pro 4也是一个不错的选择——特别是Core i5和256 GB 固态硬盘版本,此时售价只超过1300美元。

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 5285 2-in-1 - 05/06/2017 v6
Bernhard Pechlaner

Chassis
85 / 98 → 87%
Keyboard
87%
Pointing Device
92%
Connectivity
57 / 80 → 71%
Weight
72 / 78 → 87%
Battery
90%
Display
82%
Games Performance
58 / 68 → 85%
Application Performance
85 / 87 → 98%
Temperature
90%
Noise
98%
Camera
58 / 85 → 68%
Average
80%
88%
Convertible - Weighted Average

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> Notebookcheck中文版(NBC中国) > 评测 > 戴尔 Latitude 12 5285 二合一变形本简短评测
Bernhard Pechlaner, 2017-05-14 (Update: 2017-05-23)