惠普 EliteBook 840 G4 (7200U, 全高清) 笔记本电脑简短评测

Name: HP EliteBook 840 G4-Z2V49ET ABD
Brand: HP

老瓶新酒。 惠普现在为它的商务笔记本电脑搭配了Kaby Lake处理器，不过在其他方面它几乎一成不变。尽管它的屏幕亮度有所提高，但是其他表现都让我们十分失望。

Andreas Osthoff (translated by Yuchen Wang), Published 04/01/2017 🇺🇸 🇩🇪 ...

Business Kaby Lake Laptop / Notebook Windows

Test device courtesy of notebook.de

Download your licensed rating image as PNG / SVG

EliteBook 840 G4 Z2V49ET#ABD (EliteBook 840 Series)

Processor

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

Graphics adapter

Intel HD Graphics 620

Memory

8 GB

, DDR4-2133, 1/2插槽已占用, 最高支持 32 GB

Display

14.00 inch 16:9, 1920 x 1080 pixel 157 PPI, AUO123D, TN, glossy: no

Mainboard

Intel Kaby Lake-U Premium PCH

Storage

Samsung PM961 MZVLW256HEHP, 256 GB

Soundcard

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

Connections

2 USB 3.0 / 3.1 Gen1, 1 USB 3.1 Gen2, 1 VGA, 1 HDMI, 1 DisplayPort, 1 Kensington Lock, 1 Docking Station Port, Audio Connections: 3.5毫米音频接口, Card Reader: SD (SD, SDHC, SDXC), 1 SmartCard, 1 Fingerprint Reader

Networking

Intel Ethernet Connection I219-V (10/100/1000MBit/s), Intel Dual Band Wireless-AC 8265 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4.2, LTE, LTE

Size

height x width x depth (in mm): 18.9 x 338 x 237

Battery

51 Wh Lithium-Ion, Battery runtime (according to manufacturer): 15 h

Operating System

Microsoft Windows 10 Pro 64 Bit

Camera

Webcam: 720p 高清

Additional features

Speakers: 立体声, Keyboard: 孤岛式, Keyboard Light: yes, 45瓦电源适配器，快速开始说明，质保信息, HP 工具软件, Microsoft Office 365 (试用版), 36 Months Warranty

Weight

1.48 kg, Power Supply: 283 g

Price

1539 Euro

Links

HP homepage

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

see all specifications

Size Comparison

HP EliteBook 840 G4-Z2V49ET ABD Lenovo ThinkPad T470-20HD002HGE HP EliteBook Folio 1040 G3 Fujitsu LifeBook U747 Lenovo ThinkPad T470s-20HGS00V00 DIN A4 ❌

Left side: Kensington lock, VGA, USB 3.0, SmartCard reader

Right side: USB-C Gen.1, DisplayPort 1.2, SD-card reader (not visible), 3.5 mm audio, USB 3.0, RJ45, docking port, Micro-SIM, power

SD Card Reader
average JPG Copy Test (av. of 3 runs)
Lenovo ThinkPad T470s-20HGS00V00	79.3 MB/s +6%
Lenovo ThinkPad T470-20HD002HGE	76.6 MB/s +2%
HP EliteBook 840 G4-Z2V49ET ABD	74.9 MB/s
Fujitsu LifeBook U747	72.6 MB/s -3%
HP EliteBook 840 G3 T9X59ET#ABD	61 MB/s -19%
maximum AS SSD Seq Read Test (1GB)
Lenovo ThinkPad T470s-20HGS00V00	90.5 MB/s +8%
Lenovo ThinkPad T470-20HD002HGE	88.7 MB/s +6%
HP EliteBook 840 G4-Z2V49ET ABD	83.7 MB/s
HP EliteBook 840 G3 T9X59ET#ABD	83.6 MB/s 0%
Fujitsu LifeBook U747	83.3 MB/s 0%

Networking
iperf3 transmit AX12
Lenovo ThinkPad T470-20HD002HGE Intel Dual Band Wireless-AC 8265	512 MBit/s +1%
HP EliteBook 840 G4-Z2V49ET ABD Intel Dual Band Wireless-AC 8265 (jseb)	509 MBit/s
Fujitsu LifeBook U747 Intel Dual Band Wireless-AC 8265	509 MBit/s 0%
Lenovo ThinkPad T470s-20HGS00V00 Intel Dual Band Wireless-AC 8265	297 MBit/s -42%
iperf3 receive AX12
Lenovo ThinkPad T470-20HD002HGE Intel Dual Band Wireless-AC 8265	657 MBit/s +13%
Fujitsu LifeBook U747 Intel Dual Band Wireless-AC 8265	655 MBit/s +13%
Lenovo ThinkPad T470s-20HGS00V00 Intel Dual Band Wireless-AC 8265	639 MBit/s +10%
HP EliteBook 840 G4-Z2V49ET ABD Intel Dual Band Wireless-AC 8265 (jseb)	579 MBit/s


315 cd/m²	323 cd/m²	311 cd/m²
296 cd/m²	346 cd/m²	304 cd/m²
304 cd/m²	345 cd/m²	311 cd/m²

Distribution of brightness

AUO123D tested with X-Rite i1Pro 2

Maximum: 346 cd/m² (Nits) Average: 317.2 cd/m² Minimum: 22.4 cd/m²
Brightness Distribution: 86 %
Center on Battery: 346 cd/m²
Contrast: 402:1 (Black: 0.86 cd/m²)
ΔE Color 8.64 | 0.5-29.43 Ø4.92
ΔE Greyscale 11.24 | 0.5-98 Ø5.2
80% sRGB (Argyll 1.6.3 3D)
52% AdobeRGB 1998 (Argyll 1.6.3 3D)
57.7% AdobeRGB 1998 (Argyll 2.2.0 3D)
80.7% sRGB (Argyll 2.2.0 3D)
55.8% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.62

Download ICC File (X-Rite i1Pro 2)

	HP EliteBook 840 G4-Z2V49ET ABD AUO123D, , 1920x1080, 14"	Lenovo ThinkPad T470-20HD002HGE N140HCA-EAB, , 1920x1080, 14"	Lenovo ThinkPad T470s-20HGS00V00 B140QAN01.5, , 2560x1440, 14"	Fujitsu LifeBook U747 LG LP140WF3, , 1920x1080, 14"	HP EliteBook Folio 1040 G3 AUO1136, , 2560x1440, 14"	HP EliteBook 840 G3 T9X59ET#ABD Chi Mei CMN14C0, , 1920x1080, 14"
Display		-24%	21%	10%	21%	-11%
Display P3 Coverage	55.8	41.6 -25%	69 24%	66.1 18%	67.9 22%	48.93 -12%
sRGB Coverage	80.7	61.9 -23%	95.1 18%	84.8 5%	96.8 20%	73.7 -9%
AdobeRGB 1998 Coverage	57.7	43.06 -25%	69.6 21%	62 7%	70 21%	50.5 -12%
Response Times		-28%	-22%	4%	-17%	-10%
Response Time Grey 50% / Grey 80% *	39 ?(20, 19, Plateau)	41.6 ?(20.4, 21.2) -7%	46.4 ?(20.4, 26) -19%	36 ?(16.4, 19.6) 8%	46.4 ?(16.4, 30) -19%	43 ?(20, 23) -10%
Response Time Black / White *	23 ?(6, 17, Plateau)	34 ?(9.6, 24.4) -48%	28.8 ?(16.4, 12.4) -25%	23.2 ?(12.4, 10.8) -1%	26.4 ?(6.8, 19.6) -15%	25 ?(9, 16) -9%
PWM Frequency						204 ?(90)
Screen		23%	39%	33%	38%	4%
Brightness middle	346	306 -12%	327 -5%	291 -16%	327 -5%	366 6%
Brightness	317	287 -9%	311 -2%	296 -7%	316 0%	336 6%
Brightness Distribution	86	88 2%	88 2%	84 -2%	87 1%	87 1%
Black Level *	0.86	0.3 65%	0.25 71%	0.32 63%	0.35 59%	0.65 24%
Contrast	402	1020 154%	1308 225%	909 126%	934 132%	563 40%
Colorchecker dE 2000 *	8.64	6.2 28%	6.1 29%	4.3 50%	4.39 49%	10.26 -19%
Colorchecker dE 2000 max. *	13.58	13.6 -0%	12.2 10%	7.5 45%	7.27 46%
Greyscale dE 2000 *	11.24	5.8 48%	8.8 22%	4.3 62%	4.69 58%	11.51 -2%
Gamma	2.62 ^84%	2.04 ^108%	2.18 ^101%	2.31 ^95%	2.15 ^102%	2.4 ^92%
CCT	12530 ^52%	6277 ^104%	6172 ^105%	6529 ^100%	7101 ^92%	12725 ^51%
Color Space (Percent of AdobeRGB 1998)	52	39.62 -24%	61.56 18%	55.46 7%	62.52 20%	47 -10%
Color Space (Percent of sRGB)	80	61.44 -23%	94.88 19%	84.77 6%	96.71 21%	74 -7%
Total Average (Program / Settings)		-10% / 7%	13% / 27%	16% / 25%	14% / 27%	-6% / -1%

* ... 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 ms ... rise ↗ and fall ↘ combined	↗ 6 ms rise
23 ms ... rise ↗ and fall ↘ combined	↘ 17 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. » 47 % of all devices are better. This means that the measured response time is similar to the average of all tested devices (21 ms).
↔ Response Time 50% Grey to 80% Grey
39 ms ... rise ↗ and fall ↘ combined	↗ 20 ms rise
39 ms ... rise ↗ and fall ↘ combined	↘ 19 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. » 55 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (32.9 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 8746 (minimum: 5 - maximum: 343500) Hz was measured.

Cinebench R15 CPU Multi 64 Bit

Cinebench R15
CPU Single 64Bit
Lenovo ThinkPad T470s-20HGS00V00 Intel Core i7-7600U	162 Points +36%
Fujitsu LifeBook U747 Intel Core i5-7200U	130 Points +9%
Lenovo ThinkPad T470-20HD002HGE Intel Core i5-7200U	126 Points +6%
HP EliteBook Folio 1040 G3 Intel Core i5-6300U	124 Points +4%
HP EliteBook 840 G3 T9X59ET#ABD Intel Core i7-6500U	119 Points 0%
HP EliteBook 840 G4-Z2V49ET ABD Intel Core i5-7200U	119 Points
CPU Multi 64Bit
Lenovo ThinkPad T470s-20HGS00V00 Intel Core i7-7600U	368 Points +12%
Fujitsu LifeBook U747 Intel Core i5-7200U	331 Points +1%
HP EliteBook 840 G4-Z2V49ET ABD Intel Core i5-7200U	329 Points
Lenovo ThinkPad T470-20HD002HGE Intel Core i5-7200U	326 Points -1%
HP EliteBook 840 G3 T9X59ET#ABD Intel Core i7-6500U	322 Points -2%
HP EliteBook Folio 1040 G3 Intel Core i5-6300U	303 Points -8%

Cinebench R15 CPU Single 64Bit

119 Points

Cinebench R15 CPU Multi 64Bit

329 Points

Cinebench R15 OpenGL 64Bit

38.88 fps

Cinebench R15 Ref. Match 64Bit

97.7 %

Help

... in comparison

PCMark 8
Home Score Accelerated v2
Lenovo ThinkPad T470s-20HGS00V00 HD Graphics 620, i7-7600U, Samsung SSD PM961 1TB M.2 PCIe 3.0 x4 NVMe (MZVLW1T0)	3968 Points +14%
Lenovo ThinkPad T470-20HD002HGE HD Graphics 620, i5-7200U, Samsung PM961 NVMe MZVLW512HMJP	3507 Points +1%
Fujitsu LifeBook U747 HD Graphics 620, i5-7200U, Samsung MZYTY256HDHP	3506 Points +1%
HP EliteBook 840 G4-Z2V49ET ABD HD Graphics 620, i5-7200U, Samsung PM961 MZVLW256HEHP	3486 Points
HP EliteBook Folio 1040 G3 HD Graphics 520, 6300U, Samsung SM951 MZVPV256HDGL m.2 PCI-e	3305 Points -5%
HP EliteBook 840 G3 T9X59ET#ABD HD Graphics 520, 6500U, Samsung SSD PM851 256 GB MZNTE256HMHP	3231 Points -7%
Work Score Accelerated v2
Lenovo ThinkPad T470s-20HGS00V00 HD Graphics 620, i7-7600U, Samsung SSD PM961 1TB M.2 PCIe 3.0 x4 NVMe (MZVLW1T0)	4856 Points +6%
Lenovo ThinkPad T470-20HD002HGE HD Graphics 620, i5-7200U, Samsung PM961 NVMe MZVLW512HMJP	4667 Points +2%
Fujitsu LifeBook U747 HD Graphics 620, i5-7200U, Samsung MZYTY256HDHP	4653 Points +2%
HP EliteBook 840 G4-Z2V49ET ABD HD Graphics 620, i5-7200U, Samsung PM961 MZVLW256HEHP	4572 Points
HP EliteBook 840 G3 T9X59ET#ABD HD Graphics 520, 6500U, Samsung SSD PM851 256 GB MZNTE256HMHP	4275 Points -6%
HP EliteBook Folio 1040 G3 HD Graphics 520, 6300U, Samsung SM951 MZVPV256HDGL m.2 PCI-e	4241 Points -7%

PCMark 8 Home Score Accelerated v2		3486 points
PCMark 8 Creative Score Accelerated v2		4352 points
PCMark 8 Work Score Accelerated v2		4572 points
Help

	HP EliteBook 840 G4-Z2V49ET ABD Samsung PM961 MZVLW256HEHP	Lenovo ThinkPad T470-20HD002HGE Samsung PM961 NVMe MZVLW512HMJP	Lenovo ThinkPad T470s-20HGS00V00 Samsung SSD PM961 1TB M.2 PCIe 3.0 x4 NVMe (MZVLW1T0)	Fujitsu LifeBook U747 Samsung MZYTY256HDHP	HP EliteBook Folio 1040 G3 Samsung SM951 MZVPV256HDGL m.2 PCI-e	HP EliteBook 840 G3 T9X59ET#ABD Samsung SSD PM851 256 GB MZNTE256HMHP
CrystalDiskMark 3.0		-10%	12%	-50%	9%	-56%
Read Seq	1819	1155 -37%	1760 -3%	504 -72%	1649 -9%	497.8 -73%
Write Seq	1263	1076 -15%	1666 32%	497.8 -61%	1265 0%	241.4 -81%
Read 512	922	811 -12%	832 -10%	396.7 -57%	1252 36%	396 -57%
Write 512	804	862 7%	1064 32%	283.4 -65%	1244 55%	241.8 -70%
Read 4k	61.4	55.5 -10%	53.2 -13%	35.73 -42%	53.3 -13%	27.02 -56%
Write 4k	157.1	134.6 -14%	167.4 7%	87.8 -44%	159.9 2%	82.6 -47%
Read 4k QD32	513	496.2 -3%	630 23%	399.1 -22%	559 9%	388.5 -24%
Write 4k QD32	410.2	425.4 4%	533 30%	249.7 -39%	376.7 -8%	242.8 -41%

CrystalDiskMark 3.0

AS SSD

Samsung PM961 MZVLW256HEHP

Sequential Read: 1819 MB/s

Sequential Write: 1263 MB/s

512K Read: 922 MB/s

512K Write: 804 MB/s

4K Read: 61.4 MB/s

4K Write: 157.1 MB/s

4K QD32 Read: 513 MB/s

4K QD32 Write: 410.2 MB/s

3DMark 11 | 3DMark

3DMark 11 - 1280x720 Performance GPU
Lenovo ThinkPad T470s-20HGS00V00 Intel HD Graphics 620, Intel Core i7-7600U	1777 Points +26%
Lenovo ThinkPad T470-20HD002HGE Intel HD Graphics 620, Intel Core i5-7200U	1432 Points +1%
HP EliteBook 840 G4-Z2V49ET ABD Intel HD Graphics 620, Intel Core i5-7200U	1413 Points
Fujitsu LifeBook U747 Intel HD Graphics 620, Intel Core i5-7200U	1409 Points 0%
HP EliteBook Folio 1040 G3 Intel HD Graphics 520, Intel Core i5-6300U	1377 Points -3%
HP EliteBook 840 G3 T9X59ET#ABD Intel HD Graphics 520, Intel Core i7-6500U	1327 Points -6%

3DMark
1280x720 Cloud Gate Standard Graphics
Lenovo ThinkPad T470s-20HGS00V00 Intel HD Graphics 620, Intel Core i7-7600U	9610 Points +40%
HP EliteBook 840 G4-Z2V49ET ABD Intel HD Graphics 620, Intel Core i5-7200U	6864 Points
Lenovo ThinkPad T470-20HD002HGE Intel HD Graphics 620, Intel Core i5-7200U	6824 Points -1%
Fujitsu LifeBook U747 Intel HD Graphics 620, Intel Core i5-7200U	6803 Points -1%
HP EliteBook Folio 1040 G3 Intel HD Graphics 520, Intel Core i5-6300U	6708 Points -2%
HP EliteBook 840 G3 T9X59ET#ABD Intel HD Graphics 520, Intel Core i7-6500U	6351 Points -7%
1920x1080 Fire Strike Graphics
Lenovo ThinkPad T470s-20HGS00V00 Intel HD Graphics 620, Intel Core i7-7600U	1176 Points +59%
HP EliteBook Folio 1040 G3 Intel HD Graphics 520, Intel Core i5-6300U	900 Points +22%
Lenovo ThinkPad T470-20HD002HGE Intel HD Graphics 620, Intel Core i5-7200U	818 Points +11%
HP EliteBook 840 G3 T9X59ET#ABD Intel HD Graphics 520, Intel Core i7-6500U	800 Points +8%
Fujitsu LifeBook U747 Intel HD Graphics 620, Intel Core i5-7200U	799 Points +8%
HP EliteBook 840 G4-Z2V49ET ABD Intel HD Graphics 620, Intel Core i5-7200U	738 Points

3DMark 11 Performance		1525 points
3DMark Ice Storm Standard Score		50497 points
3DMark Cloud Gate Standard Score		5621 points
3DMark Fire Strike Score		697 points
Help

... in comparison

	low	med.	high	ultra
BioShock Infinite (2013)	40.5	24.3	19.8	6.4
Battlefield 4 (2013)	30.7	24.5	15.7
The Witcher 3 (2015)	12.9

Noise Level

Idle		31 / 31 / 31 dB(A)
Load		33.5 / 33.7 dB(A)

	30 dB silent 40 dB(A) audible 50 dB(A) loud
min: , med: , max: Audix TM1, Arta (15 cm distance) environment noise: 31 dB(A)

	HP EliteBook 840 G4-Z2V49ET ABD i5-7200U, HD Graphics 620	Lenovo ThinkPad T470-20HD002HGE i5-7200U, HD Graphics 620	Lenovo ThinkPad T470s-20HGS00V00 i7-7600U, HD Graphics 620	Fujitsu LifeBook U747 i5-7200U, HD Graphics 620	HP EliteBook Folio 1040 G3 6300U, HD Graphics 520	HP EliteBook 840 G3 T9X59ET#ABD 6500U, HD Graphics 520
Noise		6%	-2%	8%	3%	-6%
off / environment *	31	28 10%	28.9 7%	28.2 9%	29.1 6%	31.2 -1%
Idle Minimum *	31	28 10%	28.9 7%	28.2 9%	29.1 6%	31.2 -1%
Idle Average *	31	28 10%	28.9 7%	28.2 9%	29.1 6%	32.1 -4%
Idle Maximum *	31	29.4 5%	30.1 3%	28.2 9%	29.1 6%	33.1 -7%
Load Average *	33.5	31.4 6%	39.2 -17%	31.2 7%	32.6 3%	36.2 -8%
Load Maximum *	33.7	34.6 -3%	39.2 -16%	33 2%	37.8 -12%	37.8 -12%

* ... smaller is better

Max. Load

Idle


34 °C	37 °C	33 °C
33.2 °C	36.3 °C	33.5 °C
26.5 °C	26.2 °C	27.4 °C

Maximum: 37 °C
Average: 31.9 °C


39.4 °C	35.6 °C	35.4 °C
33 °C	35.2 °C	33.2 °C
29.1 °C	28.2 °C	27.3 °C

Maximum: 39.4 °C
Average: 32.9 °C

Power Supply (max.) 34.7 °C | Room Temperature 22.1 °C | FIRT 550-Pocket

(+) 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 37 °C / 99 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 39.4 °C / 103 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 25 °C / 77 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 27.4 °C / 81.3 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 27.7 °C / 81.9 F (+0.3 °C / 0.6 F).

HP EliteBook 840 G4-Z2V49ET ABD 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 (7.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 0.7% away from median
(+) | mids are linear (3.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.9% away from median
(+) | highs are linear (5.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (16.2% difference to median)
Compared to same class
» 15% of all tested devices in this class were better, 5% similar, 79% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 23% of all tested devices were better, 5% similar, 72% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Lenovo ThinkPad T470-20HD002HGE audio analysis

(±) | speaker loudness is average but good (80.4 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 16.6% lower than median
(±) | linearity of bass is average (8.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4.3% away from median
(+) | mids are linear (6.7% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.4% higher than median
(±) | linearity of highs is average (13.3% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (18.7% difference to median)
Compared to same class
» 30% of all tested devices in this class were better, 6% similar, 64% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 39% of all tested devices were better, 8% similar, 53% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Power Consumption

Off / Standby	0.52 / 0.72 Watt
Idle	2.9 / 5.6 / 8.15 Watt
Load	30.6 / 31 Watt


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

	HP EliteBook 840 G4-Z2V49ET ABD i5-7200U, HD Graphics 620, 1920x1080, 14"	Lenovo ThinkPad T470-20HD002HGE i5-7200U, HD Graphics 620, 1920x1080, 14"	Lenovo ThinkPad T470s-20HGS00V00 i7-7600U, HD Graphics 620, 2560x1440, 14"	Fujitsu LifeBook U747 i5-7200U, HD Graphics 620, 1920x1080, 14"	HP EliteBook Folio 1040 G3 6300U, HD Graphics 520, 2560x1440, 14"	HP EliteBook 840 G3 T9X59ET#ABD 6500U, HD Graphics 520, 1920x1080, 14"
Power Consumption		-2%	-44%	-19%	-56%	-6%
Idle Minimum *	2.9	3.21 -11%	4.64 -60%	4.11 -42%	6.3 -117%	3.8 -31%
Idle Average *	5.6	6.15 -10%	8.93 -59%	7.87 -41%	9.4 -68%	6.3 -13%
Idle Maximum *	8.15	6.82 16%	9.12 -12%	8.74 -7%	10.1 -24%	6.8 17%
Load Average *	30.6	28.5 7%	42.2 -38%	30.2 1%	33.3 -9%	34.4 -12%
Load Maximum *	31	34.5 -11%	47.3 -53%	32.4 -5%	49.5 -60%	28.3 9%

* ... smaller is better

Battery Runtime

Idle (without WLAN, min brightness)		19h 15min
WiFi Websurfing		9h 31min
Big Buck Bunny H.264 1080p		9h 51min
Load (maximum brightness)		3h 04min

	HP EliteBook 840 G4-Z2V49ET ABD i5-7200U, HD Graphics 620, 51 Wh	Lenovo ThinkPad T470-20HD002HGE i5-7200U, HD Graphics 620, 48 Wh	Lenovo ThinkPad T470s-20HGS00V00 i7-7600U, HD Graphics 620, 51 Wh	Fujitsu LifeBook U747 i5-7200U, HD Graphics 620, 50 Wh	HP EliteBook Folio 1040 G3 6300U, HD Graphics 520, 45.6 Wh	HP EliteBook 840 G3 T9X59ET#ABD 6500U, HD Graphics 520, 46 Wh
Battery Runtime		-19%	-33%	-28%	-43%	-18%
Reader / Idle	1155		787 -32%	782 -32%	530 -54%	1020 -12%
H.264	591	623 5%	454 -23%	490 -17%	339 -43%
WiFi v1.3	571	438 -23%	417 -27%	430 -25%	309 -46%	453 -21%
Load	184	110 -40%	93 -49%	117 -36%	131 -29%	146 -21%

Pros

+ 坚固的机身

+ 低发热量

+ 相对完备的安全功能

+ LTE模组

+ 优秀的性能

+ 3年质保

+ 优秀的输入设备

Cons

- TN屏幕严重偏蓝，可视角度窄

- 不支持Thunderbolt 3或USB-C第二代标准

- 屏幕转轴有轻微的怪声

In review: HP EliteBook 840 G4. Test model courtesy of Notebook.de

全新的惠普EliteBook 840 G4基本上只是前代机型G3的Kaby Lake处理器更新。机身的尺寸和品质在竞争中都不落下风，只有屏幕转轴发出的碎裂似的怪声和触控版按键的噪音有些影响它的整体印象。内部组件的易于维护是它的另一个优势，例如升级内存只需要很简单的操作。我们依然很喜欢它的输入设备，特别是键盘。

这台14寸商务笔记本电脑在性能或者散热噪音控制方面都没有让我们失望。这台设备十分安静，也不会变得太热，同时英特尔酷睿 i5-7200U可以完全发挥性能潜力。惠普也提高了它的电池容量，带来了接近10小时的续航时间。

优秀的机身，充沛的性能，低发热噪音——第四代的惠普EliteBook 840本可以是一台十分优秀的商务笔记本电脑。但这受到了较差的TN屏幕带来的负面影响，这样的屏幕对于一台售价1500欧元（约11015人民币）的设备让人难以理解。

惠普对EliteBook的改动很小从接口就可以看出来。你可以得到办公所需的所有重要接口，不过它没有搭配未来将更重要的Thunderbolt 3接口。

它的最大问题还是在于全高清TN屏幕。尽管亮度和分辨率都说得过去，但这块面板在其他的方面都很难让人满意。有限的可视角度范围在实际使用中会造成很大不便。这样一块屏幕不应该出现在一台售价1500欧元（约11015人民币）的商务设备中。如果你对EliteBook 840感兴趣的话，则需要选择搭配IPS屏幕的机型。我们不推荐这台搭配TN屏幕的测试机型。

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。

HP EliteBook 840 G4-Z2V49ET ABD - 05/26/2017 v6 ^(old)
Andreas Osthoff

Chassis

89 / 98 → 91%

Keyboard

89%

Pointing Device

87%

Connectivity

68 / 80 → 85%

Weight

69 / 20-67 → 100%