Notebookcheck

Breve Análise do Portátil Lenovo ThinkPad A275 (A12-9800B, 256GB)

Sebastian Jentsch (traduzido por Ricardo Soto), 12/26/2017

Perspectiva incerta. A Lenovo criou uma versão AMD do X270. Destaca-se em termos de dispositivos de entrada, segurança e portabilidade. No entanto, a estabilidade e a qualidade de construção são inferiores, e a tela de alguma forma não parece ser adequada para o preço.

Lenovo ThinkPad A275 (ThinkPad A Serie)
Processador
AMD PRO A12-9800B
Placa gráfica
AMD Radeon R7 (Bristol Ridge) - 512 MB, Análises do: 758 MHz, Memoría: 933 MHz, DDR4, Crimson 17.6
Memória
16384 MB 
, DDR4 1 módulo Micro Tech
Pantalha
12.5 polegadas 16:9, 1366 x 768 pixel 125 PPI, Len40E0, TN, Brilhante: não
Disco rígido
Samsung PM961 MZVLW256HEHP, 256 GB 
, 168 GB livre
Placa de Som
AMD Kabini - High Definition Audio Controller
Conexões
3 USB 3.0, 1 VGA, 1 HDMI, 1 DisplayPort, 1 Kensington Lock, Conexões Audio: Linha de saída/microfone combinada, Card Reader: SD/​SDHC/​SDXC/​MMC, 1 eSata, 1 Leitor de Impressões Digitais, dTPM 2.0
Funcionamento em rede
Realtek RTL8168/8111 Gigabit-LAN (10/100/1000MBit), Realtek 8822BE Wireless LAN 802.11ac PCI-E NIC (a/b/g/n/ac), Bluetooth 4.1
Tamanho
altura x largura x profundidade (em mm): 20.3 x 305.5 x 208.5
Bateria
71 Wh Lítio-Ion, 3 células, 23+48 Wh (integrada e externa), Duração da bateria (de acordo com o fabricante): 10 h
Sistema Operativo
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: HD 1280x720
Primary Camera: 0.9 MPix Webcam
Características adicionais
Alto falantes: Mono, Teclado: Chiclet, Iluminação do Teclado: sim, Lenovo Settings, 36 Meses Garantia
peso
1.623 kg, Suprimento de energia: 289 g
Preço
759 Euro

 

Size Comparison

left: power, USB Type-C, HDMI, USB 3.0
left: power, USB Type-C, HDMI, USB 3.0
right: 3.5-mm audio combo jack, USB 3.0, SD card reader, SIM slot, Ethernet, Kensington lock
right: 3.5-mm audio combo jack, USB 3.0, SD card reader, SIM slot, Ethernet, Kensington lock
SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
HP EliteBook 820 G3
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
73.7 MB/s ∼100% +20%
Lenovo ThinkPad X260-20F6007RGE
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
63.2 MB/s ∼86% +3%
Lenovo ThinkPad X270-20HMS00T00
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
62.2 MB/s ∼84% +1%
Lenovo ThinkPad A275
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
61.3 MB/s ∼83%
HP EliteBook 725 G4
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
60.5 MB/s ∼82% -1%
Lenovo Thinkpad 13-20J1001BUS
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
28.1 MB/s ∼38% -54%
maximum AS SSD Seq Read Test (1GB)
Lenovo ThinkPad X270-20HMS00T00
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
88 MB/s ∼100% +6%
HP EliteBook 820 G3
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
86.89 MB/s ∼99% +5%
Lenovo ThinkPad X260-20F6007RGE
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
83.47 MB/s ∼95% +1%
Lenovo ThinkPad A275
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
83 MB/s ∼94%
HP EliteBook 725 G4
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
81.6 MB/s ∼93% -2%
Lenovo Thinkpad 13-20J1001BUS
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
32.7 MB/s ∼37% -61%
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Lenovo ThinkPad X270-20HMS00T00
Intel Dual Band Wireless-AC 8265
671 MBit/s ∼100% +41%
Lenovo Thinkpad 13-20J1001BUS
Intel Dual Band Wireless-AC 8265
658 MBit/s ∼98% +39%
HP EliteBook 725 G4
Intel Dual Band Wireless-AC 7265
528 MBit/s ∼79% +11%
Lenovo ThinkPad A275
Realtek 8822BE Wireless LAN 802.11ac PCI-E NIC
475 MBit/s ∼71%
HP Envy x360 15m-bq121dx
RealTek Semiconductor, Device ID: B822
473 MBit/s ∼70% 0%
Lenovo IdeaPad 320S-13IKB
Intel Dual Band Wireless-AC 3165
326 MBit/s ∼49% -31%
iperf3 Client (transmit) TCP 1 m 4M x10
HP EliteBook 725 G4
Intel Dual Band Wireless-AC 7265
610 MBit/s ∼100% +18%
Lenovo ThinkPad A275
Realtek 8822BE Wireless LAN 802.11ac PCI-E NIC
519 MBit/s ∼85%
Lenovo Thinkpad 13-20J1001BUS
Intel Dual Band Wireless-AC 8265
517 MBit/s ∼85% 0%
Lenovo ThinkPad X270-20HMS00T00
Intel Dual Band Wireless-AC 8265
512 MBit/s ∼84% -1%
HP Envy x360 15m-bq121dx
RealTek Semiconductor, Device ID: B822
438 MBit/s ∼72% -16%
Lenovo IdeaPad 320S-13IKB
Intel Dual Band Wireless-AC 3165
295 MBit/s ∼48% -43%
241
cd/m²
247
cd/m²
264
cd/m²
237
cd/m²
255
cd/m²
249
cd/m²
232
cd/m²
243
cd/m²
229
cd/m²
Distribuição do brilho
X-Rite i1Pro 2
Máximo: 264 cd/m² Médio: 244.1 cd/m² Minimum: 3.3 cd/m²
iluminação: 87 %
iluminação com acumulador: 130 cd/m²
Contraste: 490:1 (Preto: 0.52 cd/m²)
ΔE Color 9.76 | 0.8-29.43 Ø6.3
ΔE Greyscale 11.13 | 0.64-98 Ø6.6
63% sRGB (Argyll 3D) 40% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.38
Lenovo ThinkPad A275
Len40E0, , 1366x768, 12.5
HP EliteBook 820 G3
LG Philips LGD0498, , 1366x768, 12.5
Lenovo ThinkPad X260-20F6007RGE
Lenovo N125HCE-GN1, , 1920x1080, 12.5
Lenovo Thinkpad 13-20J1001BUS
Lenovo LEN4094, , 1920x1080, 13.3
HP EliteBook 725 G4
AU Optronics, , 1920x1080, 12.5
Lenovo ThinkPad X270-20HMS00T00
Innolux N125HCE-GN1, , 1920x1080, 12.5
Response Times
-34%
1%
-15%
-10%
1041%
Response Time Grey 50% / Grey 80% *
41 (22, 19)
58 (24.8, 33.2)
-41%
32.8 (15.6, 17.2)
20%
32.8 (18, 14.8)
20%
47 (27, 20)
-15%
40.8 (21.2, 19.6)
-0%
Response Time Black / White *
23 (19, 4)
29.2 (12, 17.2)
-27%
27.2 (12.4, 14.8)
-18%
34.4 (21.2, 13.2)
-50%
24 (14, 10)
-4%
30.4 (16.4, 14)
-32%
PWM Frequency
800 (30)
26040 (50)
3155%
Screen
-4%
32%
18%
61%
30%
Brightness middle
255
244
-4%
337
32%
266.4
4%
329
29%
283
11%
Brightness
244
240
-2%
322
32%
250
2%
310
27%
281
15%
Brightness Distribution
87
84
-3%
91
5%
88
1%
88
1%
94
8%
Black Level *
0.52
0.6
-15%
0.32
38%
0.31
40%
0.19
63%
0.25
52%
Contrast
490
407
-17%
1053
115%
859
75%
1732
253%
1132
131%
Colorchecker DeltaE2000 *
9.76
9
8%
5.71
41%
5.3
46%
2.69
72%
6.1
37%
Colorchecker DeltaE2000 max. *
14.53
15.73
-8%
15.39
-6%
21
-45%
4.47
69%
15.4
-6%
Greyscale DeltaE2000 *
11.13
9.48
15%
5.15
54%
3.3
70%
4.23
62%
6
46%
Gamma
2.38 101%
2.44 98%
2.38 101%
2.36 102%
2.21 109%
2.05 117%
CCT
12214 53%
11116 58%
6881 94%
6843 95%
6011 108%
6832 95%
Color Space (Percent of AdobeRGB 1998)
40
37.18
-7%
42.38
6%
38
-5%
46
15%
42.26
6%
Color Space (Percent of sRGB)
63
58.63
-7%
65.62
4%
60
-5%
72
14%
65.43
4%
Total Average (Program / Settings)
-19% / -9%
17% / 27%
2% / 13%
26% / 49%
536% / 264%

* ... smaller is better

CalMAN gray scale
CalMAN gray scale
CalMAN gray scale (calibrated)
CalMAN gray scale (calibrated)
CalMAN saturation
CalMAN saturation
CalMAN saturation (calibrated)
CalMAN saturation (calibrated)
CalMAN ColorChecker
CalMAN ColorChecker
CalMAN ColorChecker (calibrated)
CalMAN ColorChecker (calibrated)

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
23 ms ... rise ↗ and fall ↘ combined↗ 19 ms rise
↘ 4 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 0.8 (minimum) to 240 (maximum) ms. » 26 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (26 ms).
       Response Time 50% Grey to 80% Grey
41 ms ... rise ↗ and fall ↘ combined↗ 22 ms rise
↘ 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 0.9 (minimum) to 636 (maximum) ms. » 48 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (41.6 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 800 Hz ≤ 30 % brightness setting

The display backlight flickers at 800 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 30 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 800 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 54 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 10727 (minimum: 43 - maximum: 588200) Hz was measured.

Systeminfo CPU-Z CPU
Systeminfo CPU-Z Cache
Systeminfo CPU-Z Mainboard
Systeminfo CPU-Z Memory
Systeminfo CPU-Z SPD
Systeminfo CPU-Z Grafik
Systeminfo GPU-Z Radeon R7
Systeminfo HWinfo Summary
Latency Monitor
 
0102030405060708090100110120130140150160170180190200210220230Tooltip
Cinebench R15 CPU Multi 64 Bit
Cinebench R15
CPU Single 64Bit
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
137 Points ∼100% +83%
Lenovo ThinkPad X270-20HMS00T00
Intel Core i5-7200U
129 Points ∼94% +72%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
128 Points ∼93% +71%
HP EliteBook 820 G3
Intel Core i5-6300U
123 Points ∼90% +64%
Lenovo Thinkpad 13-20J1001BUS
Intel Core i3-7100U
86 Points ∼63% +15%
HP EliteBook 725 G4
AMD PRO A12-9800B
77 Points ∼56% +3%
Lenovo ThinkPad A275
AMD PRO A12-9800B
75 Points ∼55%
CPU Multi 64Bit
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
574 Points ∼100% +155%
Lenovo ThinkPad X270-20HMS00T00
Intel Core i5-7200U
330 Points ∼57% +47%
Lenovo ThinkPad X260-20F6007RGE
Intel Core i7-6500U
324 Points ∼56% +44%
HP EliteBook 820 G3
Intel Core i5-6300U
311 Points ∼54% +38%
Lenovo Thinkpad 13-20J1001BUS
Intel Core i3-7100U
256 Points ∼45% +14%
HP EliteBook 725 G4
AMD PRO A12-9800B
229 Points ∼40% +2%
Lenovo ThinkPad A275
AMD PRO A12-9800B
225 Points ∼39%
Cinebench R15 CPU Single 64Bit
75 Points
Cinebench R15 OpenGL 64Bit
25.18 fps
Cinebench R15 Ref. Match 64Bit
98 %
Cinebench R15 CPU Multi 64Bit
225 Points
Ajuda
PCMark 8
Work Score Accelerated v2
Lenovo ThinkPad X270-20HMS00T00
HD Graphics 620, 7200U, Toshiba NVMe THNSF5512GPUK
4660 Points ∼100% +12%
HP EliteBook 820 G3
HD Graphics 520, 6300U, Samsung SM951 MZVPV256HDGL m.2 PCI-e
4581 Points ∼98% +10%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
4341 Points ∼93% +4%
Lenovo ThinkPad A275
Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP
4156 Points ∼89%
Lenovo Thinkpad 13-20J1001BUS
HD Graphics 620, 7100U
4139 Points ∼89% 0%
HP EliteBook 725 G4
Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP
3885 Points ∼83% -7%
Home Score Accelerated v2
Lenovo ThinkPad X270-20HMS00T00
HD Graphics 620, 7200U, Toshiba NVMe THNSF5512GPUK
3575 Points ∼100% +22%
HP EliteBook 820 G3
HD Graphics 520, 6300U, Samsung SM951 MZVPV256HDGL m.2 PCI-e
3400 Points ∼95% +16%
HP Envy x360 15m-bq121dx
Vega 8, 2500U, HGST Travelstar 7K1000 HTS721010A9E630
3385 Points ∼95% +16%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
3284 Points ∼92% +12%
Lenovo Thinkpad 13-20J1001BUS
HD Graphics 620, 7100U
3163 Points ∼88% +8%
Lenovo ThinkPad A275
Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP
2925 Points ∼82%
HP EliteBook 725 G4
Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP
2665 Points ∼75% -9%
PCMark 8 Home Score Accelerated v2
2925 pontos
PCMark 8 Work Score Accelerated v2
4156 pontos
Ajuda
Lenovo ThinkPad A275
Samsung PM961 MZVLW256HEHP
HP EliteBook 820 G3
Samsung SM951 MZVPV256HDGL m.2 PCI-e
Lenovo ThinkPad X260-20F6007RGE
Liteonit LCH-512V2S
Lenovo Thinkpad 13-20J1001BUS
 
HP EliteBook 725 G4
Samsung PM961 MZVLW256HEHP
CrystalDiskMark 3.0
106%
18%
-7%
12%
Write 4k QD32
94.87
343.9
262%
273.1
188%
162.2
71%
100.2
6%
Read 4k QD32
131.5
549.4
318%
316.5
141%
235.3
79%
139.7
6%
Write 4k
46.63
134.1
188%
83.55
79%
76.12
63%
47.35
2%
Read 4k
33.82
51.05
51%
27.22
-20%
34.46
2%
29.75
-12%
Write 512
870.2
811.3
-7%
372.4
-57%
247.2
-72%
890.1
2%
Read 512
943.4
1131
20%
322.9
-66%
315.7
-67%
948.7
1%
Write Seq
1133
1240
9%
403
-64%
331.3
-71%
1409
24%
Read Seq
1196
1255
5%
499.6
-58%
447.3
-63%
1963
64%
Samsung PM961 MZVLW256HEHP
Sequential Read: 1196 MB/s
Sequential Write: 1133 MB/s
512K Read: 943.4 MB/s
512K Write: 870.2 MB/s
4K Read: 33.82 MB/s
4K Write: 46.63 MB/s
4K QD32 Read: 131.5 MB/s
4K QD32 Write: 94.87 MB/s
3DMark - 1280x720 Cloud Gate Standard Graphics
HP Envy x360 15m-bq121dx
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
16285 Points ∼100% +197%
Lenovo IdeaPad 320S-13IKB
NVIDIA GeForce MX150, Intel Core i5-8250U
16227 Points ∼100% +196%
Lenovo ThinkPad X260-20F6007RGE
Intel HD Graphics 520, Intel Core i7-6500U
6287 Points ∼39% +15%
HP EliteBook 820 G3
Intel HD Graphics 520, Intel Core i5-6300U
6131 Points ∼38% +12%
Lenovo Thinkpad 13-20J1001BUS
Intel HD Graphics 620, Intel Core i3-7100U
5854 Points ∼36% +7%
Lenovo ThinkPad A275
AMD Radeon R7 (Bristol Ridge), AMD PRO A12-9800B
5481 Points ∼34%
HP EliteBook 725 G4
AMD Radeon R7 (Bristol Ridge), AMD PRO A12-9800B
5311 Points ∼33% -3%
3DMark Cloud Gate Standard Score
3942 pontos
Ajuda
BioShock Infinite - 1280x720 Very Low Preset
HP Envy x360 15m-bq121dx
Vega 8, 2500U, HGST Travelstar 7K1000 HTS721010A9E630
114.4 fps ∼100% +152%
Lenovo ThinkPad A275
Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP
45.4 fps ∼40%
Rise of the Tomb Raider - 1024x768 Lowest Preset
HP Envy x360 15m-bq121dx
Vega 8, 2500U, HGST Travelstar 7K1000 HTS721010A9E630
49.3 fps ∼100% +128%
Lenovo IdeaPad 320S-13IKB
GeForce MX150, 8250U, Samsung PM961 NVMe MZVLW512HMJP
47.33 fps ∼96% +119%
Lenovo ThinkPad A275
Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP
21.6 fps ∼44%
Battlefield 4 - 1024x768 Low Preset
Lenovo ThinkPad A275
Radeon R7 (Bristol Ridge), PRO A12-9800B, Samsung PM961 MZVLW256HEHP
29 fps ∼100%
baixo média alto ultra
BioShock Infinite (2013) 45.426.923fps
Battlefield 4 (2013) 2920.112.6fps
Rise of the Tomb Raider (2016) 21.613.27fps

Barulho

Ocioso
30.15 / 30.4 / 32.4 dB
Carga
32.4 / 32.4 dB
  red to green bar
 
 
30 dB
silencioso
40 dB(A)
audível
50 dB(A)
ruidosamente alto
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm de distância)   environment noise: 30.15 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2033.832.634.439.62531.933.831.436.13138.637.835.540.64033.532.231.635.3503130.630.136.46329.428.929.344.18026.327.227.329.610026.627.326.829.612524.824.323.733.916024.323.823.428.720023.322.622.226.125022.22221.52431521.821.520.823.340021.520.819.92250020.52019.521.163020.319.318.220.780019.619.51820.7100019.419.617.820.8125019.21917.420.216002019.917.220.6200020.12017.520.4250019.719.917.420.2315021.821.817.521.7400021.121.517.721.3500020.520.717.920.6630019.419.51820.1800019.319.51820.71000018.81918.219.41250019.5211819.31600021.920.918.322.1SPL32.432.430.233.3N1.71.71.42median 20.5Lenovo ThinkPad A275median 20.7median 18median 20.8Delta1.31.11.31.432.232.633.331.432.23131.231.932.53135.436.236.936.335.430.430.630.128.930.429.831.231.23129.829.32927.329.429.327.827.525.725.527.825.825.926.424.925.824.624.425.425.124.623.52424.423.223.523.622.622.722.923.622.222.321.821.422.221.921.621.721.121.921.121.220.32021.120.320.719.819.220.32019.218.718.6202119.418.818.32123.420.518.218.123.422.119.71817.622.121.818.917.717.621.82320.717.917.82326.72017.717.926.723.519.117.817.823.521.418.818.118.121.421.118.918.418.321.120.418.718.318.420.418.918.518.618.518.918.618.618.718.618.618.518.518.418.418.518.518.518.618.418.534.431.730.630.434.421.61.51.42median 21.8HP EliteBook 725 G4median 19.7median 18.6median 18.4median 21.81.51.21.81.81.5hearing rangehide median Fan Noise
Carga Máxima
 38.7 °C31 °C27.1 °C 
 37 °C37.2 °C31.2 °C 
 29.3 °C27 °C25.6 °C 
Máximo: 38.7 °C
Médio: 31.6 °C
27.7 °C38.2 °C42.6 °C
32.1 °C40.5 °C47 °C
24.6 °C26.9 °C34.5 °C
Máximo: 47 °C
Médio: 34.9 °C
alimentação elétrica  36.7 °C | Temperatura do quarto 21.7 °C | FIRT 550-Pocket
The maximum temp on the upper side is 38.7 °C, compared to the average of 35.9 °C ranging from 21.1 °C to 71 °C for class Subnotebook.
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2034.432.934.42537.536.137.53137.937.237.94035.433.635.45032.63132.66328.830.628.88026.227.326.210026.127.626.112526.325.826.316030.224.430.22003223.43225047.521.647.531557.321.457.340063.72063.750060.319.960.363056.21956.28006318.56310006017.960125053.317.853.3160055.517.455.5200062.117.462.1250057.217.757.231505317.853400056.61856.6500053.118.153.163005818.258800061.118.361.11000059.618.259.61250056.218.256.21600051.918.351.9SPL70.730.470.7N28.21.428.2median 56.2Lenovo ThinkPad A275median 18.3median 56.2Delta61.9634.634.734.7353534.434.434.434.233.733.732.73535.935.935.734.335.635.634.833.633.233.237.731.932.232.23739.539.639.63737.3373737.831.430.230.231.833292940.239.529.129.15048.127.827.858.951.4272761.254.2262664.457.125.425.467.155.3252565.35224.524.561.950.424.324.360.851.223.923.961.151.423.523.561.853.323.423.463.755.523.123.165.957.8232368.756.7232367.360.1232370.363.922.822.873.667.222.722.777.664.522.422.474.652.622.222.262.8median 52.6HP EliteBook 820 G3median 24.3median 24.3median 62.85.7337.13737.63535.13433.432.532.133.432.130.832.231.431.930.430.329.731.427.545.626.745.326.556.826.162.825.563.624.961.923.759.423.165.122.767.222.563.222.464.222.362.322.158.221.85721.96521.959.721.960.821.76221.964.222.268.62259.934.875.12.337.2median 22.5Lenovo Thinkpad 13-20J1001BUSmedian 61.92.15.2hearing rangehide median Pink Noise
Lenovo ThinkPad A275 audio analysis

(-) | not very loud speakers (63.7 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 20% lower than median
(±) | linearity of bass is average (13.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4% away from median
(±) | linearity of mids is average (13% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.5% away from median
(±) | linearity of highs is average (9.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (19.9% difference to median)
Compared to same class
» 63% of all tested devices in this class were better, 4% similar, 33% worse
» The best had a delta of 9%, average was 19%, worst was 47%
Compared to all devices tested
» 42% of all tested devices were better, 6% similar, 52% worse
» The best had a delta of 3%, average was 21%, worst was 53%

HP EliteBook 820 G3 audio analysis

(±) | speaker loudness is average but good (76.5 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 20.2% lower than median
(±) | linearity of bass is average (14.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2% away from median
(+) | mids are linear (5% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.7% higher than median
(+) | highs are linear (6.9% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (22.1% difference to median)
Compared to same class
» 70% of all tested devices in this class were better, 4% similar, 26% worse
» The best had a delta of 9%, average was 19%, worst was 47%
Compared to all devices tested
» 55% of all tested devices were better, 8% similar, 38% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Lenovo Thinkpad 13-20J1001BUS audio analysis

(±) | speaker loudness is average but good (75.1 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 16.8% lower than median
(±) | linearity of bass is average (14.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.1% away from median
(+) | mids are linear (6.3% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.5% away from median
(±) | linearity of highs is average (8.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (15.9% difference to median)
Compared to same class
» 19% of all tested devices in this class were better, 5% similar, 75% worse
» The best had a delta of 8%, average was 20%, worst was 51%
Compared to all devices tested
» 20% of all tested devices were better, 4% similar, 76% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Consumo de energia
desligadodarklight 0.48 / 0.6 Watt
Ociosodarkmidlight 4.2 / 8.2 / 10 Watt
Carga midlight 34.5 / 37 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Lenovo ThinkPad A275
PRO A12-9800B, Radeon R7 (Bristol Ridge), Samsung PM961 MZVLW256HEHP, TN, 1366x768, 12.5
HP EliteBook 820 G3
6300U, HD Graphics 520, Samsung SM951 MZVPV256HDGL m.2 PCI-e, TN LED, 1366x768, 12.5
Lenovo ThinkPad X260-20F6007RGE
6500U, HD Graphics 520, Liteonit LCH-512V2S, IPS, 1920x1080, 12.5
Lenovo Thinkpad 13-20J1001BUS
7100U, HD Graphics 620, , IPS, 1920x1080, 13.3
HP EliteBook 725 G4
PRO A12-9800B, Radeon R7 (Bristol Ridge), Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 12.5
Power Consumption
21%
17%
28%
12%
Idle Minimum *
4.2
3.5
17%
3.5
17%
3.5
17%
4.5
-7%
Idle Average *
8.2
5.4
34%
5.5
33%
5.7
30%
6.3
23%
Idle Maximum *
10
6.2
38%
6.7
33%
6.2
38%
8.3
17%
Load Average *
34.5
27.3
21%
28.9
16%
24.1
30%
27.6
20%
Load Maximum *
37
39.5
-7%
42.1
-14%
28.5
23%
34.5
7%

* ... smaller is better

Tempo de Execução da Bateria
Ocioso (sem WLAN, min brilho)
16h 01min
NBC WiFi Websurfing Battery Test 1.3
8h 58min
Carga (máximo brilho)
4h 03min
Lenovo ThinkPad A275
PRO A12-9800B, Radeon R7 (Bristol Ridge), 71 Wh
HP EliteBook 820 G3
6300U, HD Graphics 520, 44 Wh
Lenovo ThinkPad X260-20F6007RGE
6500U, HD Graphics 520, 46 Wh
Lenovo Thinkpad 13-20J1001BUS
7100U, HD Graphics 620, 42 Wh
HP EliteBook 725 G4
PRO A12-9800B, Radeon R7 (Bristol Ridge), 49 Wh
Battery Runtime
-29%
-23%
-14%
-35%
Reader / Idle
961
826
-14%
953
-1%
989
3%
700
-27%
WiFi v1.3
538
373
-31%
501
-7%
580
8%
380
-29%
Load
243
144
-41%
92
-62%
113
-53%
123
-49%
H.264
495
466
344

Pro

+ Dispositivos de entrada ThinkPad confortáveis
+ Várias opções de baterias graças ao PowerBridge
+ Multidão de portas para um portátil compacto
+ Duração da bateria muito longa
+ Silencioso e frio

Contra

- Unidade base flexível
- Tela muito escura com a bateria
- Ângulos de visão pobres (painel TB)
- Cobertura pobre do espaço de cores
- Desempenho pobre em comparação
- Manutenção complicada
Lenovo ThinkPad A275. Review unit courtesy of Lenovo Germany.
Lenovo ThinkPad A275. Review unit courtesy of Lenovo Germany.

O A275 certamente não é um sucessor da série ThinkPad Edge. Embora a qualidade da construção seja um pouco reminiscente da série Edge Edge descontinuada e ficamos muito decepcionados com a falta de rigidez da base, as outras qualidades do A275 foram bastante impressionantes. Isso é, assumindo que você opte pelo painel FHD, caso em que o A275 esteja no mesmo nível de outros subportáteis de gama média, como o ThinkPad 13 ou o X260 .

O que mais nos impressionou são os dispositivos de entrada de classe alta que são 95% semelhantes ao ThinkPad 13 em termos de feedback e layout. A seleção das portas também é excelente, com Ethernet, 3 USB 3.0 Gen. 1, e DisplayPort, além do suporte para a porta USB Type-C. Os recursos de segurança incluem um leitor de digitais, rápido e confiável, um leitor de cartões inteligentes e um chip TPM 2.0.

A maior desvantagem foi, de longe, a tela HD baseada em painel TN. Recomendamos insistentemente que, em vez disso, você opte pelo painel FHD - ele se adequa muito melhor ao preço do que o painel HD.

A manutenção também é um pouco confusa. Enquanto a bateria externa pode ser trocada a quente graças à bateria primária não substituível integrada 23-Wh, o A275 não possui uma escotilha de manutenção dedicada. Toda a carcaça superior deve ser removida para acessar o SSD (M.2), o ventilador ou o único slot de RAM.

Em tudo, o A275 é certamente um cavalo de trabalho decente com qualidades incontestáveis, como a duração da bateria de 9 horas no nosso teste Wi-Fi, seus excelentes dispositivos de entrada, sua infinidade de portas e seus recursos de segurança. No entanto, em mais de $1.000, achamos é um pouco caro, considerando o lento e, neste ponto também desatualizado, SoC AMD Bristol Ridge.

HP EliteBook 820 G3 equipado com um processador i5-6200U Skylake pode ser adquirido por menos de $1.000, e também o ThinkPad 13 G2 equipado com i5-7200U.

Estamos tendo sérios problemas para encontrar motivos convincentes para comprar este portátil, além do fato de que o EliteBook 725 G4 baseado em Bristol Ridge custa quase o mesmo. No entanto, consideramos que o portátil também é muito caro. Um preço de menos de $1.000 seria mais razoável para superar o desempenho significativamente mais lento.

Lenovo ThinkPad A275 - 12/21/2017 v6
Sebastian Jentsch

Acabamento
68 /  98 → 69%
Teclado
91%
Mouse
87%
Conectividade
62 / 80 → 77%
Peso
68 / 35-78 → 76%
Bateria
91%
Pantalha
73%
Desempenho do jogos
54 / 68 → 80%
Desempenho da aplicação
71 / 87 → 82%
Temperatura
91 / 91 → 100%
Ruído
93%
Audio
50 / 91 → 55%
Camera
31 / 85 → 37%
Médio
72%
82%
Subnotebook - Médio equilibrado

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> Análises e revisões de portáteis e celulares > Análises > Análises > Breve Análise do Portátil Lenovo ThinkPad A275 (A12-9800B, 256GB)
Sebastian Jentsch, 2017-12-26 (Update: 2018-01- 5)