Notebookcheck

Recensione breve del Portatile HP EliteBook 755 G4 (AMD PRO A12-9800B)

Performance adeguate? La serie EliteBook HP ha dispositivi business per clienti esigenti. Nella recensione dell'EliteBook 755 G4, vedrete come si comporta e se le prestazioni rendono giustizia.

HP EliteBook 755 G4 (EliteBook 700 Serie)
Processore
Scheda grafica
AMD Radeon R7 (Bristol Ridge), Core: 758 MHz, Memoria: 933 MHz, 21.19.153.1536
Memoria
8192 MB 
, DDR4-2400
Schermo
15.6 pollici 16:9, 1920x1080 pixel 141 PPI, Chi Mei, CMN15C3, TN LED, lucido: no
Scheda madre
K15.6 IMC
Harddisk
Samsung PM961 MZVLW256HEHP, 256 GB 
, M.2 SSD, 200 GB libera
Scheda audio
AMD Kabini - High Definition Audio Controller
Porte di connessione
2 USB 3.0 / 3.1, 1 USB 3.1 Gen 2, 1 Thunderbolt, 1 VGA, 1 DisplayPort, 1 Kensington Lock, 1 Porta Docking, Connessioni Audio: stereo, Lettore schede: SD, SDHC, SDXC, 1 SmartCard, 1 Lettore impronte digitali
Rete
Broadcom BCM5762 NetXtreme PCI-E Gigabit Ethernet Controller (10/1000MBit), Intel Dual Band Wireless-AC 7265 (a/b/g/h/n/ac), Bluetooth 4.2, LTE
Dimensioni
altezza x larghezza x profondità (in mm): 19.4 x 383.6 x 257.7
Batteria
51 Wh, 4420 mAh ioni di litio
Sistema Operativo
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: 720p HD
Altre caratteristiche
Casse: stereo, Tastiera: Chiclet, Illuminazione Tastiera: si, Netzteil, 36 Mesi Garanzia
Peso
1.834 kg, Alimentazione: 288 gr
Prezzo
1460 EUR

 

HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
HP EliteBook 755 G4
Left: Kensington Lock, fan vents, VGA, USB 3.0 (charging connector), smartcard reader
Left: Kensington Lock, fan vents, VGA, USB 3.0 (charging connector), smartcard reader
Right: USB Type-C, DisplayPort, SD-card reader, 3.5-mm audio, USB 3.0, RJ-45, docking port, Micro-SIM, power
Right: USB Type-C, DisplayPort, SD-card reader, 3.5-mm audio, USB 3.0, RJ-45, docking port, Micro-SIM, power
Front: status LEDs
Front: status LEDs
Back: no connections
Back: no connections
SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Fujitsu LifeBook U757
74 MB/s ∼100% +35%
Lenovo ThinkPad T570-20H90002GE
73.6 MB/s ∼99% +34%
HP EliteBook 850 G4-Z2W86ET
73.2 MB/s ∼99% +33%
HP ProBook 650 G2 V1A44ET
57.3 MB/s ∼77% +4%
HP EliteBook 755 G4
55 MB/s ∼74%
maximum AS SSD Seq Read Test (1GB)
Lenovo ThinkPad T570-20H90002GE
89.5 MB/s ∼100% +8%
HP EliteBook 850 G4-Z2W86ET
85.39 MB/s ∼95% +3%
Fujitsu LifeBook U757
82.6 MB/s ∼92% 0%
HP EliteBook 755 G4
82.6 MB/s ∼92%
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Fujitsu LifeBook U757
Intel Dual Band Wireless-AC 8265
660 MBit/s ∼100% +31%
Lenovo ThinkPad T570-20H90002GE
Intel Dual Band Wireless-AC 8265
639 MBit/s ∼97% +27%
HP EliteBook 850 G4-Z2W86ET
Intel Dual Band Wireless-AC 8265
588 MBit/s ∼89% +17%
HP EliteBook 755 G4
Intel Dual Band Wireless-AC 7265
504 MBit/s ∼76%
iperf3 Client (transmit) TCP 1 m 4M x10
HP EliteBook 755 G4
Intel Dual Band Wireless-AC 7265
648 MBit/s ∼100%
Lenovo ThinkPad T570-20H90002GE
Intel Dual Band Wireless-AC 8265
561 MBit/s ∼87% -13%
HP EliteBook 850 G4-Z2W86ET
Intel Dual Band Wireless-AC 8265
523 MBit/s ∼81% -19%
Fujitsu LifeBook U757
Intel Dual Band Wireless-AC 8265
522 MBit/s ∼81% -19%
309
cd/m²
320
cd/m²
293
cd/m²
274
cd/m²
333
cd/m²
289
cd/m²
302
cd/m²
334
cd/m²
299
cd/m²
Distribuzione della luminosità
X-Rite i1Pro 2
Massima: 334 cd/m² Media: 305.9 cd/m² Minimum: 16 cd/m²
Distribuzione della luminosità: 82 %
Al centro con la batteria: 333 cd/m²
Contrasto: 374:1 (Nero: 0.89 cd/m²)
ΔE Color 11.69 | - Ø
ΔE Greyscale 13.7 | - Ø
84% sRGB (Argyll) 54% AdobeRGB 1998 (Argyll)
Gamma: 2.29
HP EliteBook 755 G4
Chi Mei, CMN15C3, , 1920x1080, 15.6
Lenovo ThinkPad T570-20H90002GE
N156HCA-EAA, , 1920x1080, 15.6
HP EliteBook 850 G4-Z2W86ET
AUO35ED, , 1920x1080, 15.6
Fujitsu LifeBook U757
LP156WF6-SPP1, , 1920x1080, 15.6
HP ProBook 650 G2 V1A44ET
Chi Mei, , 1920x1080, 15.6
Response Times
832%
-23%
-14%
-40%
Response Time Grey 50% / Grey 80% *
45 (27, 18)
41.6 (22, 19.6)
8%
47.2 (26.8, 20.4)
-5%
36 (17.2, 18.8)
20%
41 (23, 18)
9%
Response Time Black / White *
18 (14, 4)
20.8 (6.8, 14)
-16%
15.2 (10, 5.2)
16%
26.4 (15.6, 10.8)
-47%
27 (10, 17)
-50%
PWM Frequency
1000 (90)
26040 (40)
2504%
199.2 (50)
-80%
200 (90)
-80%
Screen
43%
6%
52%
9%
Brightness
306
245
-20%
341
11%
294
-4%
296
-3%
Brightness Distribution
82
89
9%
90
10%
84
2%
90
10%
Black Level *
0.89
0.24
73%
0.81
9%
0.27
70%
0.59
34%
Contrast
374
1092
192%
417
11%
1159
210%
531
42%
Colorchecker DeltaE2000 *
11.69
4.5
62%
10.9
7%
4.5
62%
11.89
-2%
Greyscale DeltaE2000 *
13.7
3.5
74%
13.3
3%
4
71%
12.95
5%
Gamma
2.29 105%
2.32 103%
2.11 114%
2.24 107%
2.4 100%
CCT
15194 43%
6524 100%
16030 41%
6387 102%
15063 43%
Color Space (Percent of AdobeRGB 1998)
54
42.04
-22%
53.8
0%
55.3
2%
50
-7%
Color Space (Percent of sRGB)
84
65.4
-22%
83.4
-1%
84.74
1%
78
-7%
Media totale (Programma / Settaggio)
438% / 258%
-9% / -2%
19% / 39%
-16% / -4%

* ... Meglio usare valori piccoli

Tempi di risposta del Display

I tempi di risposta del display mostrano quanto sia veloce lo schermo a cambaire da un colore all'altro. Tempi di risposta lenti poccono creare sovrapposizioni negloi oggetti in movimento. Specialmente i giocatori patiti del 3D dovrebbero usare uno schermo con rempi di risposta bassi.
       Tempi di risposta dal Nero al Bianco
18 ms ... rise ↗ and fall ↘ combined↗ 14 ms Incremento
↘ 4 ms Calo
Lo schermo mostra buoni tempi di risposta durante i nostri tests, ma potrebbe essere troppo lento per i gamers competitivi.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 10 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (26.8 ms).
       Tempo di risposta dal 50% Grigio all'80% Grigio
45 ms ... rise ↗ and fall ↘ combined↗ 27 ms Incremento
↘ 18 ms Calo
Lo schermo mostra tempi di risposta lenti nei nostri tests e sarà insoddisfacente per i gamers.
In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 67 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (43 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 1000 Hz90 % brightness setting

The display backlight flickers at 1000 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 90 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 1000 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 58 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 5885 (minimum: 43 - maximum: 142900) Hz was measured.

CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
GPU-Z
GPU-Z
GPU-Z
GPU-Z
HWiNFO
HWiNFO
DPC latencies
DPC latencies
 
0102030405060708090100110120130140150160170180190200210220230Tooltip
Cinebench R15 CPU Multi 64 Bit
Cinebench R15
CPU Single 64Bit
Fujitsu LifeBook U757
Intel Core i5-7200U
128 Points ∼100% +71%
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U
128 Points ∼100% +71%
HP EliteBook 850 G4-Z2W86ET
Intel Core i5-7200U
126 Points ∼98% +68%
HP ProBook 650 G2 V1A44ET
Intel Core i5-6200U
116 Points ∼91% +55%
HP EliteBook 755 G4
AMD PRO A12-9800B
75 Points ∼59%
CPU Multi 64Bit
Fujitsu LifeBook U757
Intel Core i5-7200U
331 Points ∼100% +49%
HP EliteBook 850 G4-Z2W86ET
Intel Core i5-7200U
330 Points ∼100% +49%
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U
330 Points ∼100% +49%
HP ProBook 650 G2 V1A44ET
Intel Core i5-6200U
291 Points ∼88% +31%
HP EliteBook 755 G4
AMD PRO A12-9800B
222 Points ∼67%
Cinebench R11.5
CPU Single 64Bit
HP EliteBook 755 G4
AMD PRO A12-9800B
0.9 Points ∼100%
CPU Multi 64Bit
HP EliteBook 755 G4
AMD PRO A12-9800B
2.7 Points ∼100%
JetStream 1.1 - 1.1 Total Score
HP EliteBook 850 G4-Z2W86ET
Intel Core i5-7200U
201.84 Points ∼100% +58%
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U
197.5 Points ∼98% +55%
Fujitsu LifeBook U757
Intel Core i5-7200U
183.01 Points ∼91% +43%
HP EliteBook 755 G4
AMD PRO A12-9800B
127.66 Points ∼63%
HP ProBook 650 G2 V1A44ET
Intel Core i5-6200U
112.57 Points ∼56% -12%
Octane V2 - Total Score
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U
30924 Points ∼100% +68%
HP EliteBook 850 G4-Z2W86ET
Intel Core i5-7200U
29647 Points ∼96% +61%
HP EliteBook 755 G4
AMD PRO A12-9800B
18435 Points ∼60%
Mozilla Kraken 1.1 - Total Score
HP EliteBook 755 G4
AMD PRO A12-9800B
2151.5 ms * ∼100%
HP EliteBook 850 G4-Z2W86ET
Intel Core i5-7200U
1231.4 ms * ∼57% +43%
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U
1168.2 ms * ∼54% +46%

* ... Meglio usare valori piccoli

Cinebench R10 Shading 32Bit
4680
Cinebench R10 Rendering Multiple CPUs 32Bit
7257
Cinebench R10 Rendering Single 32Bit
2564
Cinebench R10 Shading 64Bit
4562 Points
Cinebench R10 Rendering Multiple CPUs 64Bit
10237 Points
Cinebench R10 Rendering Single CPUs 64Bit
3499 Points
Cinebench R11.5 CPU Multi 64Bit
2.7 Points
Cinebench R11.5 OpenGL 64Bit
18.07 fps
Cinebench R11.5 CPU Single 64Bit
0.9 Points
Cinebench R15 CPU Multi 64Bit
222 Points
Cinebench R15 CPU Single 64Bit
75 Points
Cinebench R15 Ref. Match 64Bit
98 %
Cinebench R15 OpenGL 64Bit
22.88 fps
Aiuto
PCMark 8
Work Score Accelerated v2
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U, 2500, Samsung PM961 MZVLW256HEHP
4606 Points ∼100% +22%
HP EliteBook 850 G4-Z2W86ET
Intel Core i5-7200U, 2500, Samsung PM951 NVMe MZVLV256
4330 Points ∼94% +15%
HP EliteBook 755 G4
AMD PRO A12-9800B, 2700, Samsung PM961 MZVLW256HEHP
3765 Points ∼82%
Creative Score Accelerated v2
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U, 2500, Samsung PM961 MZVLW256HEHP
4380 Points ∼100% +33%
HP EliteBook 755 G4
AMD PRO A12-9800B, 2700, Samsung PM961 MZVLW256HEHP
3292 Points ∼75%
Home Score Accelerated v2
HP EliteBook 850 G4-Z2W86ET
Intel Core i5-7200U, 2500, Samsung PM951 NVMe MZVLV256
3542 Points ∼100% +124%
Lenovo ThinkPad T570-20H90002GE
Intel Core i5-7200U, 2500, Samsung PM961 MZVLW256HEHP
3523 Points ∼99% +123%
Fujitsu LifeBook U757
Intel Core i5-7200U, 2500, Samsung CM871a MZNTY256HDHP
3320 Points ∼94% +110%
HP ProBook 650 G2 V1A44ET
Intel Core i5-6200U, 2300, Sandisk X300 SD7SN6S-256G-1006
3234 Points ∼91% +105%
HP EliteBook 755 G4
AMD PRO A12-9800B, 2700, Samsung PM961 MZVLW256HEHP
1579 Points ∼45%
PCMark 7
Productivity
HP EliteBook 755 G4
AMD PRO A12-9800B, 2700, Samsung PM961 MZVLW256HEHP
3547 Points ∼100%
Score
HP EliteBook 755 G4
AMD PRO A12-9800B, 2700, Samsung PM961 MZVLW256HEHP
7184 Points ∼100%
PCMark 7 Score
7184 punti
PCMark 8 Home Score Accelerated v2
1579 punti
PCMark 8 Creative Score Accelerated v2
3292 punti
PCMark 8 Work Score Accelerated v2
3765 punti
Aiuto
HP EliteBook 755 G4
Samsung PM961 MZVLW256HEHP
Lenovo ThinkPad T570-20H90002GE
Samsung PM961 MZVLW256HEHP
HP EliteBook 850 G4-Z2W86ET
Samsung PM951 NVMe MZVLV256
Fujitsu LifeBook U757
Samsung CM871a MZNTY256HDHP
HP ProBook 650 G2 V1A44ET
Sandisk X300 SD7SN6S-256G-1006
CrystalDiskMark 3.0
132%
78%
36%
14%
Write 4k QD32
99.07
426.4
330%
297.5
200%
256.7
159%
154.1
56%
Read 4k QD32
141.2
509.7
261%
495
251%
402.8
185%
347.2
146%
Write 4k
49.86
130.6
162%
138.4
178%
88.37
77%
98.74
98%
Read 4k
31.42
56.59
80%
41.79
33%
36.43
16%
32.71
4%
Write 512
579.5
860.3
48%
298.8
-48%
321.7
-44%
265.5
-54%
Read 512
582.6
933.4
60%
672.7
15%
414.3
-29%
280.4
-52%
Write Seq
773.7
1166
51%
298.6
-61%
488.4
-37%
435
-44%
Read Seq
800
1318
65%
1245
56%
509.3
-36%
475
-41%
Samsung PM961 MZVLW256HEHP
Sequential Read: 800 MB/s
Sequential Write: 773.7 MB/s
512K Read: 582.6 MB/s
512K Write: 579.5 MB/s
4K Read: 31.42 MB/s
4K Write: 49.86 MB/s
4K QD32 Read: 141.2 MB/s
4K QD32 Write: 99.07 MB/s
3DMark
1920x1080 Fire Strike Graphics
HP EliteBook 755 G4
AMD Radeon R7 (Bristol Ridge), AMD PRO A12-9800B
962 Points ∼100%
Lenovo ThinkPad T570-20H90002GE
Intel HD Graphics 620, Intel Core i5-7200U
822 Points ∼85% -15%
HP EliteBook 850 G4-Z2W86ET
Intel HD Graphics 620, Intel Core i5-7200U
792 Points ∼82% -18%
1280x720 Cloud Gate Standard Graphics
Lenovo ThinkPad T570-20H90002GE
Intel HD Graphics 620, Intel Core i5-7200U
7030 Points ∼100% +33%
HP EliteBook 850 G4-Z2W86ET
Intel HD Graphics 620, Intel Core i5-7200U
6840 Points ∼97% +30%
HP EliteBook 755 G4
AMD Radeon R7 (Bristol Ridge), AMD PRO A12-9800B
5278 Points ∼75%
3DMark 11 - 1280x720 Performance GPU
HP EliteBook 755 G4
AMD Radeon R7 (Bristol Ridge), AMD PRO A12-9800B
1820 Points ∼100%
Lenovo ThinkPad T570-20H90002GE
Intel HD Graphics 620, Intel Core i5-7200U
1431 Points ∼79% -21%
HP EliteBook 850 G4-Z2W86ET
Intel HD Graphics 620, Intel Core i5-7200U
1417 Points ∼78% -22%
Fujitsu LifeBook U757
Intel HD Graphics 620, Intel Core i5-7200U
1309 Points ∼72% -28%
HP ProBook 650 G2 V1A44ET
Intel HD Graphics 520, Intel Core i5-6200U
1220 Points ∼67% -33%
3DMark 11 Performance
1737 punti
3DMark Ice Storm Standard Score
37561 punti
3DMark Cloud Gate Standard Score
3897 punti
3DMark Fire Strike Score
833 punti
3DMark Fire Strike Extreme Score
417 punti
3DMark Time Spy Score
358 punti
Aiuto
basso medio alto ultra
BioShock Infinite (2013) 46.227.922.57.8fps
Battlefield 4 (2013) 32.522.815.25.6fps
The Witcher 3 (2015) 11.97.6fps
Rise of the Tomb Raider (2016) 20.612.46.2fps

Rumorosità

Idle
29.9 / 29.9 / 29.9 dB(A)
Sotto carico
30.9 / 32.8 dB(A)
 
 
 
30 dB
silenzioso
40 dB(A)
udibile
50 dB(A)
rumoroso
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm di distanza)   Rumorosità ambientale: 29.9 dB(A)
HP EliteBook 755 G4
PRO A12-9800B, Radeon R7 (Bristol Ridge)
Lenovo ThinkPad T570-20H90002GE
7200U, HD Graphics 620
HP EliteBook 850 G4-Z2W86ET
7200U, HD Graphics 620
Fujitsu LifeBook U757
7200U, HD Graphics 620
HP ProBook 650 G2 V1A44ET
6200U, HD Graphics 520
Noise
-5%
2%
2%
-6%
off / environment *
29.9
29.3
2%
29
3%
28.2
6%
30.5
-2%
Idle Minimum *
29.9
29.3
2%
29
3%
28.2
6%
30.5
-2%
Idle Average *
29.9
29.3
2%
29
3%
28.2
6%
31.6
-6%
Idle Maximum *
29.9
31.2
-4%
29
3%
28.2
6%
31.9
-7%
Load Average *
30.9
35.1
-14%
31
-0%
33.3
-8%
34.7
-12%
Load Maximum *
32.8
38.7
-18%
33.4
-2%
34
-4%
34.5
-5%

* ... Meglio usare valori piccoli

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2034.334.634.833.634.32531.535.538.338.231.53137.545.642.343.437.54032.238.238.53432.25040.540.344.23940.56328.431.335.731.628.4802627.726272610024.825.725.326.124.812525.725.626.128.425.7160232324.124.32320022.322.52222.422.325021.621.621.321.521.631521.821.221.121.321.84002120.319.919.52150020.419.418.818.720.463019.918.81818.319.980020.518.817.517.620.5100020.418.717.617.120.4125020.919.117.317.220.9160021.519.117.117.221.5200021.818.916.716.921.825002319.41716.923315021.618.317.417.321.640002017.817.317.320500018.717.717.417.518.763001817.617.617.51880001817.717.817.5181000018.117.81817.818.11250018.217.918.217.818.21600018.818.118.518.318.8SPL32.830.93029.932.8N1.81.51.41.31.8median 20.9HP EliteBook 755 G4median 18.9median 18median 17.8median 20.9Delta1.11.71.61.71.137.533.234.336.931.434.137.832.933.236.331.330.931.328.328.82927.626.728.127.72726.523.425.126.825.327.124.42323.623.523.92424.826.224.522.622.423.221.62122.62019.721.12018.722.12019.623.920.319.824.52016.92319.714.922.519.614.321.519.714.120.317.513.819.717.314.119.215.514.11815.214.115.71514.114.915.214.415.114.614.214.814.614.114.4312933.11.51.21.8median 20HP EliteBook 850 G4-Z2W86ETmedian 16.9median 22.12.73.92.9hearing rangehide median Fan Noise
Carico massimo
 33.5 °C34 °C35 °C 
 32 °C35.7 °C32 °C 
 27.2 °C27.1 °C28.1 °C 
Massima: 35.7 °C
Media: 31.6 °C
31.8 °C31.2 °C31.4 °C
31.3 °C29.9 °C31.4 °C
26.6 °C26.1 °C26.3 °C
Massima: 31.8 °C
Media: 29.6 °C
Alimentazione (max)  45 °C | Temperatura della stanza 23.4 °C | FIRT 550-Pocket
HP EliteBook 755 G4
PRO A12-9800B, Radeon R7 (Bristol Ridge)
Lenovo ThinkPad T570-20H90002GE
7200U, HD Graphics 620
HP EliteBook 850 G4-Z2W86ET
7200U, HD Graphics 620
Fujitsu LifeBook U757
7200U, HD Graphics 620
HP ProBook 650 G2 V1A44ET
6200U, HD Graphics 520
Heat
-6%
5%
-4%
-9%
Maximum Upper Side *
35.7
39.5
-11%
37
-4%
42
-18%
39.6
-11%
Maximum Bottom *
31.8
48.3
-52%
41.1
-29%
38.8
-22%
41.8
-31%
Idle Upper Side *
30.9
24.5
21%
23.2
25%
29.2
6%
31.6
-2%
Idle Bottom *
31.8
25.3
20%
23.2
27%
26.3
17%
29.7
7%

* ... Meglio usare valori piccoli

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2047.733.647.72543.938.243.9314543.4454037.43437.45040.33940.36338.231.638.28028.22728.210029.726.129.712540.928.440.91604824.34820047.522.447.525039.721.539.731546.221.346.240061.619.561.650063.718.763.763064.318.364.380063.517.663.5100062.517.162.5125066.217.266.216005817.25820006316.963250062.716.962.7315065.617.365.6400067.917.367.950006717.567630067.117.567.180006417.5641000062.717.862.71250064.617.864.6160006018.360SPL76.829.976.8N39.91.339.9median 62.7HP EliteBook 755 G4median 17.8median 62.7Delta6.61.76.63432.235.93532.636.334.535.927.931.726.9312732.625.832.525.537.123.941.324.448.625.852.521.860.420.16219.364.118.864.119.560.92061.817.861.215.45814.959.214.563.614.161.615.662.714.76417.166.616.964.115.755.616.352.518.649.429.574.61.336.1median 18.6HP EliteBook 850 G4-Z2W86ETmedian 60.93.35.7hearing rangehide median Pink Noise
HP EliteBook 755 G4 audio analysis

(-) | not very loud speakers (68 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 20.7% lower than median
(±) | linearity of bass is average (12.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.6% away from median
(±) | linearity of mids is average (10.2% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.6% away from median
(+) | highs are linear (3.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (15.5% difference to median)
Compared to same class
» 20% of all tested devices in this class were better, 6% similar, 74% worse
» The best had a delta of 11%, average was 20%, worst was 48%
Compared to all devices tested
» 19% of all tested devices were better, 4% similar, 77% worse
» The best had a delta of 3%, average was 22%, worst was 53%

HP EliteBook 850 G4-Z2W86ET audio analysis

(±) | speaker loudness is average but good (74.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 15.5% lower than median
(±) | linearity of bass is average (11% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.7% away from median
(+) | mids are linear (3.8% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.2% away from median
(±) | linearity of highs is average (7.6% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (15.3% difference to median)
Compared to same class
» 20% of all tested devices in this class were better, 3% similar, 76% worse
» The best had a delta of 11%, average was 20%, worst was 48%
Compared to all devices tested
» 18% of all tested devices were better, 4% similar, 78% worse
» The best had a delta of 3%, average was 22%, worst was 53%

Consumo di corrente
Off / Standbydarklight 0.58 / 0.65 Watt
Idledarkmidlight 7 / 10.9 / 11 Watt
Sotto carico midlight 30.5 / 36.1 Watt
 color bar
Leggenda: min: dark, med: mid, max: light        Metrahit Energy
HP EliteBook 755 G4
PRO A12-9800B, Radeon R7 (Bristol Ridge), Samsung PM961 MZVLW256HEHP, TN LED, 1920x1080, 15.6
Lenovo ThinkPad T570-20H90002GE
7200U, HD Graphics 620, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 15.6
HP EliteBook 850 G4-Z2W86ET
7200U, HD Graphics 620, Samsung PM951 NVMe MZVLV256, TN LED, 1920x1080, 15.6
Fujitsu LifeBook U757
7200U, HD Graphics 620, Samsung CM871a MZNTY256HDHP, IPS LED, 1920x1080, 15.6
HP ProBook 650 G2 V1A44ET
6200U, HD Graphics 520, Sandisk X300 SD7SN6S-256G-1006, TN LED, 1920x1080, 15.6
Power Consumption
15%
25%
22%
28%
Idle Minimum *
7
3.6
49%
3.58
49%
3.96
43%
3.4
51%
Idle Average *
10.9
7.7
29%
5.97
45%
7.74
29%
7.5
31%
Idle Maximum *
11
8.2
25%
6.81
38%
8.64
21%
7.6
31%
Load Average *
30.5
30.8
-1%
29.4
4%
28.8
6%
28.4
7%
Load Maximum *
36.1
46.1
-28%
39.7
-10%
32
11%
28.4
21%

* ... Meglio usare valori piccoli

Autonomia della batteria
Idle (senza WLAN, min luminosità)
12ore 16minuti
Navigazione WiFi v1.3 (Edge 38.14393.1066.0)
4ore 19minuti
Big Buck Bunny H.264 1080p
4ore 32minuti
Sotto carico (max luminosità)
1ore 53minuti
HP EliteBook 755 G4
PRO A12-9800B, Radeon R7 (Bristol Ridge), 51 Wh
Lenovo ThinkPad T570-20H90002GE
7200U, HD Graphics 620, 56 Wh
HP EliteBook 850 G4-Z2W86ET
7200U, HD Graphics 620, 51 Wh
Fujitsu LifeBook U757
7200U, HD Graphics 620, 50 Wh
HP ProBook 650 G2 V1A44ET
6200U, HD Graphics 520, 48 Wh
Autonomia della batteria
82%
82%
70%
64%
Reader / Idle
736
1167
59%
1081
47%
H.264
272
587
116%
637
134%
WiFi v1.3
259
454
75%
530
105%
440
70%
424
64%
Load
113
201
78%
160
42%

Pro

+ case robusto
+ design elegante
+ buona costruzione
+ silenzioso anche sotto carico
+ SSD veloce
+ modulo LTE
+ buone connessioni
+ qualità del suono sopra la media
+ connettore docking

Contro

- Pannello TN (angoli di visuale stabili)
- consumi elevati in idle
- Prestazioni CPU sotto le aspettative
- autonomia troppo limitata
- nessuna cover per manutenzione
HP EliteBook 755 G4, fornito da HP Germany
HP EliteBook 755 G4, fornito da HP Germany

L'HP EliteBook 755 G4 è un portatile business da 15". Il processore AMD è sufficiente per il tipo di utilizzo, e ha anche qualche svantaggio. Inoltre, il portatile ha 8 GB di DDR4-RAM ed un veloce SSD da 256 GB in formato M.2-2280 e costa 1460 Euro (~$1650). Abbiamo apprezzato la costruzione che non merita critiche. Anche l'aspetto è molto discreto ed elegante. Grazie alla buona scelta di materiali, la base è molto solida e pertanto adatta all'utilizzo quotidiano. 

L'HP EliteBook 755 G4 è un buon dispositivo business con molte features di sicurezza per un dispositivo entry. Con l'HP EliteBook 755 G4, coloro che si accontentano delle prestazioni del processore AMD hanno un buon dispositivo con connessioni moderne.

La principale critica è al display che non convince. La qualità non rispecchia la serie EliteBook. Il produttore avrebbe dovuto testare il livello di qualità per ottenere un risultato migliore. Altre critiche riguardano il processore che consuma molta energia, e la conseguente autonomia limitata.

Manca una cover per la manutenzione, e bisogna aprire il case il che richiede un po' di tempo. Una cover sarebbe stata più utile a nostro parere. Abbiamo apprezzato la qualità del suono, la tastiera, il veloce SSD.

Nota: si tratta di una recensione breve, con alcune sezioni non tradotte, per la versione integrale in inglese guardate qui.

HP EliteBook 755 G4 - 07/12/2017 v6
Sebastian Bade

Chassis
90 / 98 → 92%
Tastiera
92%
Dispositivo di puntamento
90%
Connettività
59 / 80 → 73%
Peso
65 / 67 → 96%
Batteria
77%
Display
77%
Prestazioni di gioco
50 / 68 → 73%
Prestazioni Applicazioni
68 / 92 → 74%
Temperatura
94%
Rumorosità
95%
Audio
69%
Fotocamera
45 / 85 → 53%
Media
75%
85%
Office - Media ponderata

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> Recensioni e prove de portatili e telefoni cellulari > Recensioni e prove > Recensioni e prove > Recensione breve del Portatile HP EliteBook 755 G4 (AMD PRO A12-9800B)
Sebastian Bade, 2017-07-18 (Update: 2017-07-18)