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Breve Análise do Portátil Lenovo ThinkPad X1 Carbon 2018 (WQHD HDR, i7)

Andreas Osthoff (traduzido por Ricardo Soto), 02/21/2018

Ótima tela, mas altas temperaturas - análise em tempo real. A Lenovo atualizou o seu carro-chefe ThinkPad X1 Carbon para 2018. O novo modelo possui tanto um processador quad-core ultra-low voltage (ULV) quanto uma tela WQHD HDR muito brilhante. Acabamos de receber o dispositivo em nosso departamento editorial para lhe dar nossas primeiras impressões.

Lenovo ThinkPad X1 Carbon 2018-20KGS03900 (ThinkPad X1 Carbon 2018 Serie)
Placa gráfica
Intel UHD Graphics 620, Análises do: 1100 MHz
Memória
16384 MB 
, LPDDR3-2133, Dual-Channel, soldada
Pantalha
14 polegadas 16:9, 2560 x 1440 pixel 210 PPI, B140QAN02.0, IPS, Dolby Vision HDR, Brilhante: sim
placa mãe
Intel Kaby Lake-U iHDCP 2.2 Premium PCH
Disco rígido
Samsung SSD PM981 MZVLB512HAJQ-000L7, 512 GB 
, 448 GB livre
Placa de Som
Intel Kaby Lake-U/Y PCH - High Definition Audio
Conexões
2 USB 3.0, 2 USB 3.1 Gen2, 2 Thunderbolt, 1 HDMI, 2 DisplayPort, 1 Kensington Lock, 1 Docking Station Port, Conexões Audio: Conector de áudio 3,5 mm, Card Reader: microSD (UHS-II), 1 Leitor de Impressões Digitais, NFC
Funcionamento em rede
Intel Dual Band Wireless-AC 8265 (a/b/g/n/ac), Bluetooth 4.2
Tamanho
altura x largura x profundidade (em mm): 15.95 x 323.5 x 217.1
Bateria
57 Wh Lítio-Polímero, Duração da bateria (de acordo com o fabricante): 14.7 h
Sistema Operativo
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: 720p HD, ThinkShutter webcam cover
Características adicionais
Alto falantes: 2 alto falantes de 1 W, Dolby Audio Premium, Teclado: Chiclet, Iluminação do Teclado: sim, Fonte de alimentação de 65 W, Adaptador RJ45 LAN, 36 Meses Garantia
peso
1.126 kg, Suprimento de energia: 356 g
Preço
1839 Euro

 

Size comparison

502
cd/m²
529
cd/m²
486
cd/m²
523
cd/m²
578
cd/m²
516
cd/m²
554
cd/m²
578
cd/m²
529
cd/m²
Distribuição do brilho
X-Rite i1Pro 2
Máximo: 578 cd/m² Médio: 532.8 cd/m² Minimum: 7.2 cd/m²
iluminação: 84 %
iluminação com acumulador: 579 cd/m²
Contraste: 1521:1 (Preto: 0.38 cd/m²)
ΔE Color 1.9 | 0.4-29.43 Ø6.3, calibrated: 0.8
ΔE Greyscale 3 | 0.64-98 Ø6.5
100% sRGB (Argyll 3D) 88.8% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.14
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
B140QAN02.0, , 2560x1440, 14
Lenovo ThinkPad X1 Carbon 2017-20HR006FGE
LEN40AA (LP140QH2-SPB1), , 2560x1440, 14
Lenovo ThinkPad X1 Carbon 2017-20HQS03P00
B140HAN03_1, , 1920x1080, 14
HP EliteBook 840 G4-Z2V49ET ABD
AUO123D, , 1920x1080, 14
Dell Latitude 13 7380
LGD0589, , 1920x1080, 13.3
Apple MacBook Pro 13 2017 Touchbar i5
APPA034, , 2560x1600, 13.3
Dell Latitude 7480
LG Philips LGD0557, , 1920x1080, 14
Fujitsu LifeBook U747
LG LP140WF3, , 1920x1080, 14
Response Times
38%
19%
34%
29%
11%
20%
36%
Response Time Grey 50% / Grey 80% *
59.2 (28.4, 30.8)
35.6 (18.4, 17.2)
40%
41.6 (20.4, 21.2)
30%
39 (20, 19, Plateau)
34%
34 (17.2, 16.8)
43%
48 (23.6, 24.4)
19%
40.8 (19.2, 21.6)
31%
36 (16.4, 19.6)
39%
Response Time Black / White *
34.4 (16.4, 18)
22.4 (12.4, 12)
35%
31.6 (18.8, 12.8)
8%
23 (6, 17, Plateau)
33%
29.6 (17.2, 12.4)
14%
33.6 (16.4, 17.2)
2%
31.2 (18.8, 12.4)
9%
23.2 (12.4, 10.8)
33%
PWM Frequency
119000 (80)
Screen
-42%
-55%
-123%
-70%
17%
-26%
-44%
Brightness middle
578
342
-41%
311
-46%
346
-40%
317
-45%
551
-5%
344
-40%
291
-50%
Brightness
533
337
-37%
288
-46%
317
-41%
295
-45%
514
-4%
321
-40%
296
-44%
Brightness Distribution
84
87
4%
85
1%
86
2%
87
4%
88
5%
85
1%
84
0%
Black Level *
0.38
0.37
3%
0.24
37%
0.86
-126%
0.3
21%
0.48
-26%
0.32
16%
0.32
16%
Contrast
1521
924
-39%
1296
-15%
402
-74%
1057
-31%
1148
-25%
1075
-29%
909
-40%
Colorchecker DeltaE2000 *
1.9
3.6
-89%
5.5
-189%
8.64
-355%
6.3
-232%
0.8
58%
2.6
-37%
4.3
-126%
Colorchecker DeltaE2000 max. *
3.8
7.7
-103%
9
-137%
13.58
-257%
10.4
-174%
1.4
63%
7.8
-105%
7.5
-97%
Colorchecker DeltaE2000 calibrated *
0.8
Greyscale DeltaE2000 *
3
5.8
-93%
6.2
-107%
11.24
-275%
7.8
-160%
1
67%
2.6
13%
4.3
-43%
Gamma
2.14 112%
2.2 109%
2.02 119%
2.62 92%
1.81 133%
2.16 111%
2.28 105%
2.31 104%
CCT
6377 102%
6693 97%
5950 109%
12530 52%
7120 91%
6672 97%
7050 92%
6529 100%
Color Space (Percent of AdobeRGB 1998)
88.8
68.8
-23%
55.96
-37%
52
-41%
61
-31%
65.82
-26%
55.46
-38%
Color Space (Percent of sRGB)
100
98.5
-1%
85.77
-14%
80
-20%
92
-8%
92.27
-8%
84.77
-15%
Total Average (Program / Settings)
-2% / -29%
-18% / -43%
-45% / -97%
-21% / -54%
14% / 15%
-3% / -18%
-4% / -30%

* ... 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
34.4 ms ... rise ↗ and fall ↘ combined↗ 16.4 ms rise
↘ 18 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. » 89 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (25.8 ms).
       Response Time 50% Grey to 80% Grey
59.2 ms ... rise ↗ and fall ↘ combined↗ 28.4 ms rise
↘ 30.8 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 95 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (41.3 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 8813 (minimum: 43 - maximum: 142900) Hz was measured.

LatencyMon with activated radio connections
LatencyMon with activated radio connections
LatencyMon playing a YouTube video (1440p)
LatencyMon playing a YouTube video (1440p)
Cinebench R15
CPU Single 64Bit
Microsoft Surface Book 2
Intel Core i7-8650U
177 Points ∼100% +5%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel Core i7-8550U
168 Points ∼95%
Dell Latitude 7480
Intel Core i7-7600U
162 Points ∼92% -4%
Dell Latitude 13 7380
Intel Core i7-7600U
161 Points ∼91% -4%
Average Intel Core i7-8550U
  (108 - 172, n=53)
160 Points ∼90% -5%
Intel Reference i5-8350U 15W
Intel Core i5-8350U
151 Points ∼85% -10%
HP ProBook 440 G5-3KX87ES
Intel Core i5-8250U
146 Points ∼82% -13%
Lenovo ThinkPad X1 Carbon 2017-20HQS03P00
Intel Core i7-7500U
143 Points ∼81% -15%
Apple MacBook Pro 13 2017 Touchbar i5
Intel Core i5-7267U
141 Points ∼80% -16%
Fujitsu LifeBook U747
Intel Core i5-7200U
130 Points ∼73% -23%
HP EliteBook 840 G4-Z2V49ET ABD
Intel Core i5-7200U
119 Points ∼67% -29%
Average of class Office
  (20 - 178, n=456)
107 Points ∼60% -36%
CPU Multi 64Bit
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel Core i7-8550U
708 Points ∼100%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel Core i7-8550U
648 Points ∼92% -8%
Microsoft Surface Book 2
Intel Core i7-8650U
673 Points ∼95% -5%
HP ProBook 440 G5-3KX87ES
Intel Core i5-8250U
620 Points ∼88% -12%
Average Intel Core i7-8550U
  (301 - 761, n=55)
571 Points ∼81% -19%
Intel Reference i5-8350U 15W
Intel Core i5-8350U
501 Points ∼71% -29%
Apple MacBook Pro 13 2017 Touchbar i5
Intel Core i5-7267U
383 (min: 377, max: 385) Points ∼54% -46%
Lenovo ThinkPad X1 Carbon 2017-20HQS03P00
Intel Core i7-7500U
360 Points ∼51% -49%
Dell Latitude 13 7380
Intel Core i7-7600U
359 Points ∼51% -49%
Dell Latitude 7480
Intel Core i7-7600U
343 Points ∼48% -52%
Fujitsu LifeBook U747
Intel Core i5-7200U
331 Points ∼47% -53%
HP EliteBook 840 G4-Z2V49ET ABD
Intel Core i5-7200U
329 Points ∼46% -54%
Average of class Office
  (36 - 1050, n=460)
311 Points ∼44% -56%
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Cinebench R15 CPU Multi 64 Bit
Cinebench R15 CPU Single 64Bit
168 Points
Cinebench R15 CPU Multi 64Bit
708 Points
Cinebench R15 OpenGL 64Bit
56.3 fps
Cinebench R15 Ref. Match 64Bit
97.8 %
Ajuda
Samsung SSD PM981 MZVLB512HAJQ-000L7
Sequential Read: 2326.8 MB/s
Sequential Write: 1807.6 MB/s
512K Read: 419.29 MB/s
512K Write: 1272.32 MB/s
4K Read: 60.58 MB/s
4K Write: 132.93 MB/s
4K QD32 Read: 340.74 MB/s
4K QD32 Write: 439.73 MB/s
Consumo de energia
desligadodarklight 0.31 / 0.5 Watt
Ociosodarkmidlight 3.8 / 8.9 / 11.9 Watt
Carga midlight 47.5 / 52.5 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
8550U, UHD Graphics 620, Samsung SSD PM981 MZVLB512HAJQ-000L7, IPS, 2560x1440, 14
HP EliteBook 840 G4-Z2V49ET ABD
7200U, HD Graphics 620, Samsung PM961 MZVLW256HEHP, TN, 1920x1080, 14
Dell Latitude 13 7380
7600U, HD Graphics 620, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 13.3
Apple MacBook Pro 13 2017 Touchbar i5
7267U, Iris Plus Graphics 650, Apple SSD AP0256, IPS, 2560x1600, 13.3
Dell Latitude 7480
7600U, HD Graphics 620, Intel SSDSCKKF256H6, IPS, 1920x1080, 14
Fujitsu LifeBook U747
7200U, HD Graphics 620, Samsung MZYTY256HDHP, IPS LED, 1920x1080, 14
Power Consumption
34%
36%
-4%
28%
21%
Idle Minimum *
3.8
2.9
24%
3.2
16%
2.8
26%
4.32
-14%
4.11
-8%
Idle Average *
8.9
5.6
37%
5.5
38%
10.9
-22%
6.27
30%
7.87
12%
Idle Maximum *
11.9
8.15
32%
6.1
49%
11.4
4%
6.35
47%
8.74
27%
Load Average *
47.5
30.6
36%
29.5
38%
55.4
-17%
29.82
37%
30.2
36%
Load Maximum *
52.5
31
41%
32
39%
57.5
-10%
30.64
42%
32.4
38%

* ... smaller is better

In review: Lenovo ThinkPad X1 Carbon 2018 HDR. Test device courtesy of Campuspoint.
In review: Lenovo ThinkPad X1 Carbon 2018 HDR. Test device courtesy of Campuspoint.

Fomos entusiasmados com a profundidade e qualidade das cores assim que vimos pela primeira vez a cor do fundo padrão da área de trabalho. Essa impressão foi agravada assistindo alguns vídeos curtos. Finalmente, há um ThinkPad com uma tela excelente que também não decepciona em outras áreas. A tela WQHD HDR do X1 Carbon também supera o já bom painel 4K encontrado no workstation móvel ThinkPad P71. O acabamento brilhante é uma desvantagem para a tela WQHD HDR, especialmente se você planeja usar o dispositivo quando viaja. Felizmente, a Lenovo ainda oferece o painel WQHD mate do modelo do ano passado.

No entanto, estamos confusos com as mudanças nos limites de temperatura. Enquanto ao remover os limites de temperatura da CPU do modelo do ano passado beneficia o desempenho e o sistema permanece estável, as temperaturas da superfície atingem mais de 50 °C sob carga. Talvez, então, a Lenovo melhor não deveria remover completamente esses limites de temperatura. Vamos monitorar isso de perto com testes adicionais, já que não podemos concluir definitivamente depois de um pouco mais de meio dia de testes.

Estamos curiosos para ver como o novo X1 Carbon se compara com o X280 e T480s revisados que também estão atualmente em teste. Também esperamos suas perguntas e sugestões.

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> Análises e revisões de portáteis e celulares > Análises > Análises > Breve Análise do Portátil Lenovo ThinkPad X1 Carbon 2018 (WQHD HDR, i7)
Andreas Osthoff, 2018-02-21 (Update: 2018-03- 7)