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Breve Análise do Portátil Lenovo Yoga C740-15IML: Potente duração da bateria, tela fraca

Benjamin Herzig, 👁 Andreas Osthoff, Andrea Grüblinger (traduzido por Ricardo Soto), 01/28/2020

Transformação degradante do desempenho. O chip gráfico dedicado fica sem substituição, o 4K UHD não é mais uma opção e não existe mais o Thunderbolt 3: À primeira vista, o Lenovo Yoga C740-15IML parece ser um claro downgrade comparado ao seu antecessor. Embora isso seja válido para alguns aspectos do conversível, outras áreas tiveram algumas melhorias. Infelizmente, nosso modelo de teste sofre com uma tela com pouca iluminação. Leia nossa análise para descobrir o que mais a Lenovo faz ou não faz bem.

Lenovo Yoga C740-15IML
Memória
16384 MB 
, DDR4-2666, onboard
Pantalha
15.6 polegadas 16:9, 1920 x 1080 pixel 141 PPI, 10 pontos, native pen support, B156HAN02.5, IPS LED, Brilhante: não, HDR
placa mãe
Intel Comet Lake-U PCH-LP Premium
Disco rígido
Samsung SSD PM981 MZVLB512HAJQ, 512 GB 
, M.2 2280 PCIe NVMe, 435 GB livre
Placa de Som
Intel Comet Lake PCH-LP - cAVS
Conexões
4 USB 3.0, 2 DisplayPort, Conexões Audio: Áudio combinado, 1 Leitor de Impressões Digitais, Sensores: Acelerômetro
Funcionamento em rede
Intel Wi-Fi 6 AX201 (a/b/g/h/n = Wi-Fi 4/ac = Wi-Fi 5/ax = Wi-Fi 6), Bluetooth 5.1
Tamanho
altura x largura x profundidade (em mm): 17.25 x 357.8 x 235.35
Bateria
60.3 Wh Lítio-Ion
Sistema Operativo
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: 720p com deslizador de privacidade
Características adicionais
Alto falantes: Estéreo de 2 watts, Teclado: 6 filas chiclet com teclado numérico, Iluminação do Teclado: sim, Lenovo Active Pen 2, Lenovo USB type-C 3-in-1 hub, Lenovo Vantage, Lenovo Utility, Lenovo stylus configuration, Microsoft Office Trial, 24 Meses Garantia
peso
1.862 kg, Suprimento de energia: 355 g
Preço
1149 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

RatingDateModelWeightHeightSizeResolutionBest Price
85%01/2020Lenovo Yoga C740-15IML
i7-10510U, UHD Graphics 620
1.9 kg17.25 mm15.6"1920x1080
83%07/2018Lenovo Yoga 730-15IKB
8550U, GeForce GTX 1050 (Laptop)
1.9 kg17.2 mm15.6"3840x2160
86%12/2019Lenovo Yoga C940-15IRH
9750H, GeForce GTX 1650 Max-Q
2 kg19.7 mm15.6"1920x1080
81%06/2018Dell Inspiron 15 5579-9672
8250U, UHD Graphics 620
2.1 kg20.2 mm15.6"1920x1080
82%04/2018Asus ZenBook Flip 15 UX561UD
8550U, GeForce GTX 1050 (Laptop)
2.1 kg21 mm15.6"3840x2160
80%04/2018HP Envy x360 15-bq102ng
2500U, Vega 8
2.1 kg19.6 mm15.6"1920x1080

Size Comparison

381.9 mm 253.1 mm 20.2 mm 2.1 kg364 mm 246 mm 21 mm 2.1 kg359.7 mm 248.8 mm 19.6 mm 2.1 kg360 mm 249 mm 17.2 mm 1.9 kg357.8 mm 235.35 mm 17.25 mm 1.9 kg355.2 mm 238.4 mm 19.7 mm 2 kg
Right: 2x USB 3.0 Type-A
Right: 2x USB 3.0 Type-A
Left: 2x USB 3.1 Gen 1 Type-C, audio combo
Left: 2x USB 3.1 Gen 1 Type-C, audio combo
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Lenovo Yoga C740-15IML
Intel Wi-Fi 6 AX201
1420 MBit/s ∼100%
HP Envy x360 15-bq102ng
Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter
632 MBit/s ∼45% -55%
Lenovo Yoga 730-15IKB
Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter
616 MBit/s ∼43% -57%
Dell Inspiron 15 5579-9672
Qualcomm Atheros QCA61x4
612 MBit/s ∼43% -57%
Average of class Convertible
  (28.7 - 1420, n=152)
495 MBit/s ∼35% -65%
Asus ZenBook Flip 15 UX561UD
Intel Dual Band Wireless-AC 8265
461 MBit/s ∼32% -68%
iperf3 Client (transmit) TCP 1 m 4M x10
Lenovo Yoga C740-15IML
Intel Wi-Fi 6 AX201
1380 MBit/s ∼100%
HP Envy x360 15-bq102ng
Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter
676 MBit/s ∼49% -51%
Asus ZenBook Flip 15 UX561UD
Intel Dual Band Wireless-AC 8265
666 MBit/s ∼48% -52%
Dell Inspiron 15 5579-9672
Qualcomm Atheros QCA61x4
657 MBit/s ∼48% -52%
Lenovo Yoga 730-15IKB
Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter
650 MBit/s ∼47% -53%
Average of class Convertible
  (36.4 - 1380, n=152)
499 MBit/s ∼36% -64%
283
cd/m²
280
cd/m²
278
cd/m²
267
cd/m²
286
cd/m²
251
cd/m²
258
cd/m²
276
cd/m²
237
cd/m²
Distribuição do brilho
B156HAN02.5
X-Rite i1Pro 2
Máximo: 286 cd/m² Médio: 268.4 cd/m² Minimum: 2.8 cd/m²
iluminação: 83 %
iluminação com acumulador: 287 cd/m²
Contraste: 1430:1 (Preto: 0.2 cd/m²)
ΔE Color 7.3 | 0.6-29.43 Ø6, calibrated: 5.1
ΔE Greyscale 7 | 0.64-98 Ø6.2
57.5% sRGB (Argyll 3D) 36.9% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.35
Lenovo Yoga C740-15IML
B156HAN02.5, IPS LED, 1920x1080, 15.6
Lenovo Yoga 730-15IKB
BOE HF NV156QUM-N51, IPS, 3840x2160, 15.6
Dell Inspiron 15 5579-9672
AUO, B156HW01, IPS, 1920x1080, 15.6
Asus ZenBook Flip 15 UX561UD
B156ZAN03.1, IPS, 3840x2160, 15.6
HP Envy x360 15-bq102ng
Chi Mei CM15E9, IPS, 1920x1080, 15.6
Response Times
28%
15%
4%
21%
Response Time Grey 50% / Grey 80% *
50.8 (24, 26.8)
34 (16, 18)
33%
41 (19, 22)
19%
52 (25, 27)
-2%
40 (22, 18)
21%
Response Time Black / White *
32.4 (17.6, 14.8)
25 (14, 11)
23%
29 (17, 12)
10%
29 (15, 14)
10%
26 (14, 12)
20%
PWM Frequency
961 (90)
25000 (30)
Screen
16%
9%
40%
24%
Brightness middle
286
309
8%
251
-12%
380
33%
221
-23%
Brightness
268
299
12%
240
-10%
371
38%
207
-23%
Brightness Distribution
83
84
1%
84
1%
87
5%
87
5%
Black Level *
0.2
0.29
-45%
0.2
-0%
0.28
-40%
0.15
25%
Contrast
1430
1066
-25%
1255
-12%
1357
-5%
1473
3%
Colorchecker DeltaE2000 *
7.3
3.9
47%
5.25
28%
4.38
40%
4.35
40%
Colorchecker DeltaE2000 max. *
21.7
7.5
65%
10.04
54%
7.59
65%
8.98
59%
Colorchecker DeltaE2000 calibrated *
5.1
Greyscale DeltaE2000 *
7
4.58
35%
3.28
53%
3.6
49%
3.09
56%
Gamma
2.35 94%
2.43 91%
2.15 102%
2.32 95%
2.23 99%
CCT
5847 111%
7344 89%
6502 100%
6860 95%
6068 107%
Color Space (Percent of AdobeRGB 1998)
36.9
39
6%
35
-5%
88
138%
56
52%
Color Space (Percent of sRGB)
57.5
90
57%
55
-4%
100
74%
86
50%
Total Average (Program / Settings)
22% / 18%
12% / 10%
22% / 34%
23% / 24%

* ... 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
32.4 ms ... rise ↗ and fall ↘ combined↗ 17.6 ms rise
↘ 14.8 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. » 84 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (24.9 ms).
       Response Time 50% Grey to 80% Grey
50.8 ms ... rise ↗ and fall ↘ combined↗ 24 ms rise
↘ 26.8 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. » 84 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (39.6 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 not detected

In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 13634 (minimum: 43 - maximum: 2500000) Hz was measured.

CPU-Z
CPU-Z
CPU-Z Caches
CPU-Z Caches
CPU-Z Mainboard
CPU-Z Mainboard
HWiNFO
HWiNFO
GPU-Z
GPU-Z
LatencyMon
LatencyMon
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540550560570580590600610620630640650660670680690700710720730740750760770Tooltip
Lenovo Yoga C740-15IML Intel Core i7-10510U, Intel Core i7-10510U: Ø604 (560-752)
Lenovo Yoga 730-15IKB Intel Core i7-8550U, Intel Core i7-8550U: Ø672 (652.93-722.79)
Dell Inspiron 15 5579-9672 Intel Core i5-8250U, Intel Core i5-8250U: Ø503 (479.16-561.5)
Asus ZenBook Flip 15 UX561UD Intel Core i7-8550U, Intel Core i7-8550U: Ø581 (569.97-761.01)
HP Envy x360 15-bq102ng AMD Ryzen 5 2500U, AMD Ryzen 5 2500U: Ø561 (552.26-618.11)
Cinebench R15
CPU Single 64Bit
Lenovo Yoga C740-15IML
Intel Core i7-10510U
195 Points ∼100%
Average Intel Core i7-10510U
  (170 - 202, n=9)
188 Points ∼96% -4%
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
184 Points ∼94% -6%
Asus ZenBook Flip 15 UX561UD
Intel Core i7-8550U
171 Points ∼88% -12%
Lenovo Yoga 730-15IKB
Intel Core i7-8550U
168 Points ∼86% -14%
HP Envy x360 15-bq102ng
AMD Ryzen 5 2500U
142 Points ∼73% -27%
Dell Inspiron 15 5579-9672
Intel Core i5-8250U
140 Points ∼72% -28%
Average of class Convertible
  (19 - 195, n=312)
107 Points ∼55% -45%
CPU Multi 64Bit
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
1203 Points ∼100% +59%
Asus ZenBook Flip 15 UX561UD
Intel Core i7-8550U
761 Points ∼63% +1%
Lenovo Yoga C740-15IML
Intel Core i7-10510U
756 (min: 560, max: 756) Points ∼63%
Lenovo Yoga 730-15IKB
Intel Core i7-8550U
723 Points ∼60% -4%
Average Intel Core i7-10510U
  (546 - 813, n=11)
699 Points ∼58% -8%
HP Envy x360 15-bq102ng
AMD Ryzen 5 2500U
618 Points ∼51% -18%
Dell Inspiron 15 5579-9672
Intel Core i5-8250U
557 Points ∼46% -26%
Average of class Convertible
  (33 - 830, n=321)
309 Points ∼26% -59%
Cinebench R15 CPU Multi 64Bit
756 Points
Cinebench R15 OpenGL 64Bit
61 fps
Cinebench R15 Ref. Match 64Bit
98 %
Cinebench R15 CPU Single 64Bit
195 Points
Ajuda
PCMark 10
Digital Content Creation
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 (Laptop), 8550U, Micron 1100 MTFDDAV256TBN
4146 Points ∼100% +18%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 (Laptop), 8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
4042 Points ∼97% +15%
Lenovo Yoga C740-15IML
UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ
3522 Points ∼85%
Average Intel Core i7-10510U, Intel UHD Graphics 620
 
3522 Points ∼85% 0%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
2848 Points ∼69% -19%
Dell Inspiron 15 5579-9672
UHD Graphics 620, 8250U, SK hynix SC311 SATA
2656 Points ∼64% -25%
Average of class Convertible
  (605 - 4342, n=110)
2517 Points ∼61% -29%
Productivity
Lenovo Yoga C740-15IML
UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ
7254 Points ∼100%
Average Intel Core i7-10510U, Intel UHD Graphics 620
 
7254 Points ∼100% 0%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 (Laptop), 8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
6678 Points ∼92% -8%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 (Laptop), 8550U, Micron 1100 MTFDDAV256TBN
6024 Points ∼83% -17%
Average of class Convertible
  (1121 - 7254, n=112)
5311 Points ∼73% -27%
Dell Inspiron 15 5579-9672
UHD Graphics 620, 8250U, SK hynix SC311 SATA
4811 Points ∼66% -34%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
3901 Points ∼54% -46%
Essentials
Lenovo Yoga C740-15IML
UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ
10546 Points ∼100%
Average Intel Core i7-10510U, Intel UHD Graphics 620
 
10546 Points ∼100% 0%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 (Laptop), 8550U, Micron 1100 MTFDDAV256TBN
8388 Points ∼80% -20%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 (Laptop), 8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
8258 Points ∼78% -22%
Average of class Convertible
  (2489 - 10546, n=112)
7057 Points ∼67% -33%
Dell Inspiron 15 5579-9672
UHD Graphics 620, 8250U, SK hynix SC311 SATA
6349 Points ∼60% -40%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
6236 Points ∼59% -41%
Score
Lenovo Yoga C740-15IML
UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ
4630 Points ∼100%
Average Intel Core i7-10510U, Intel UHD Graphics 620
 
4630 Points ∼100% 0%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 (Laptop), 8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
4347 Points ∼94% -6%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 (Laptop), 8550U, Micron 1100 MTFDDAV256TBN
4249 Points ∼92% -8%
Average of class Convertible
  (872 - 4677, n=113)
3217 Points ∼69% -31%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
2944 Points ∼64% -36%
Dell Inspiron 15 5579-9672
UHD Graphics 620, 8250U, SK hynix SC311 SATA
2208 Points ∼48% -52%
PCMark 8
Work Score Accelerated v2
Lenovo Yoga C740-15IML
UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ
5366 Points ∼100%
Average Intel Core i7-10510U, Intel UHD Graphics 620
 
5366 Points ∼100% 0%
Dell Inspiron 15 5579-9672
UHD Graphics 620, 8250U, SK hynix SC311 SATA
4556 Points ∼85% -15%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 (Laptop), 8550U, Micron 1100 MTFDDAV256TBN
4401 Points ∼82% -18%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 (Laptop), 8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
4382 Points ∼82% -18%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
3800 Points ∼71% -29%
Average of class Convertible
  (1007 - 5366, n=239)
3764 Points ∼70% -30%
Home Score Accelerated v2
Lenovo Yoga C740-15IML
UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ
3935 Points ∼100%
Average Intel Core i7-10510U, Intel UHD Graphics 620
 
3935 Points ∼100% 0%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 (Laptop), 8550U, Micron 1100 MTFDDAV256TBN
3614 Points ∼92% -8%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 (Laptop), 8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
3505 Points ∼89% -11%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
3462 Points ∼88% -12%
Dell Inspiron 15 5579-9672
UHD Graphics 620, 8250U, SK hynix SC311 SATA
3370 Points ∼86% -14%
Average of class Convertible
  (741 - 4741, n=288)
2814 Points ∼72% -28%
PCMark 8 Home Score Accelerated v2
3935 pontos
PCMark 8 Work Score Accelerated v2
5366 pontos
Ajuda
Lenovo Yoga C740-15IML
Samsung SSD PM981 MZVLB512HAJQ
Lenovo Yoga 730-15IKB
SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
Dell Inspiron 15 5579-9672
SK hynix SC311 SATA
Asus ZenBook Flip 15 UX561UD
Micron 1100 MTFDDAV256TBN
HP Envy x360 15-bq102ng
Samsung PM961 MZVLW256HEHP
Average Samsung SSD PM981 MZVLB512HAJQ
 
CrystalDiskMark 5.2 / 6
-10%
-70%
-61%
-29%
-17%
Write 4K
142.3
164.9
16%
48.25
-66%
112.6
-21%
116
-18%
125 (90.4 - 176, n=60)
-12%
Read 4K
47.56
50.49
6%
23.77
-50%
29.67
-38%
42.73
-10%
43.7 (28 - 61.3, n=59)
-8%
Write Seq
2185
1262
-42%
444.9
-80%
432.1
-80%
1222
-44%
1605 (112 - 2730, n=58)
-27%
Read Seq
2235
2054
-8%
497.5
-78%
479.9
-79%
1608
-28%
1719 (501 - 2665, n=58)
-23%
Write 4K Q32T1
515.4
477.6
-7%
223.5
-57%
191
-63%
280.1
-46%
414 (198 - 1707, n=60)
-20%
Read 4K Q32T1
413.4
549.7
33%
171.8
-58%
246.5
-40%
333.6
-19%
414 (230 - 1015, n=60)
0%
Write Seq Q32T1
2981
1400
-53%
510.9
-83%
450.3
-85%
1291
-57%
2083 (1714 - 2994, n=60)
-30%
Read Seq Q32T1
3565
2672
-25%
552.8
-84%
522.4
-85%
3183
-11%
3110 (1772 - 3565, n=60)
-13%
Samsung SSD PM981 MZVLB512HAJQ
Sequential Read: 2499 MB/s
Sequential Write: 2196 MB/s
512K Read: 1779 MB/s
512K Write: 1735 MB/s
4K Read: 65.23 MB/s
4K Write: 143.7 MB/s
4K QD32 Read: 401.1 MB/s
4K QD32 Write: 471.4 MB/s
3DMark 11 - 1280x720 Performance GPU
Asus ZenBook Flip 15 UX561UD
NVIDIA GeForce GTX 1050 (Laptop), Intel Core i7-8550U
7339 Points ∼100% +267%
Lenovo Yoga 730-15IKB
NVIDIA GeForce GTX 1050 (Laptop), Intel Core i7-8550U
6935 Points ∼94% +247%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
3549 Points ∼48% +78%
Lenovo Yoga C740-15IML
Intel UHD Graphics 620, Intel Core i7-10510U
1999 Points ∼27%
Average Intel UHD Graphics 620
  (1235 - 2006, n=182)
1722 Points ∼23% -14%
Dell Inspiron 15 5579-9672
Intel UHD Graphics 620, Intel Core i5-8250U
1529 Points ∼21% -24%
Average of class Convertible
  (173 - 7483, n=337)
1315 Points ∼18% -34%
3DMark
2560x1440 Time Spy Graphics
Lenovo Yoga 730-15IKB
NVIDIA GeForce GTX 1050 (Laptop), Intel Core i7-8550U
1416 Points ∼100% +227%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
649 Points ∼46% +50%
Average of class Convertible
  (85 - 1682, n=42)
486 Points ∼34% +12%
Lenovo Yoga C740-15IML
Intel UHD Graphics 620, Intel Core i7-10510U
433 Points ∼31%
Average Intel UHD Graphics 620
  (299 - 443, n=42)
366 Points ∼26% -15%
Dell Inspiron 15 5579-9672
Intel UHD Graphics 620, Intel Core i5-8250U
317 Points ∼22% -27%
1920x1080 Fire Strike Graphics
Lenovo Yoga 730-15IKB
NVIDIA GeForce GTX 1050 (Laptop), Intel Core i7-8550U
5965 Points ∼100% +336%
Asus ZenBook Flip 15 UX561UD
NVIDIA GeForce GTX 1050 (Laptop), Intel Core i7-8550U
5329 Points ∼89% +289%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
2310 Points ∼39% +69%
Lenovo Yoga C740-15IML
Intel UHD Graphics 620, Intel Core i7-10510U
1369 Points ∼23%
Average Intel UHD Graphics 620
  (557 - 1418, n=154)
1132 Points ∼19% -17%
Average of class Convertible
  (132 - 5965, n=247)
1043 Points ∼17% -24%
Dell Inspiron 15 5579-9672
Intel UHD Graphics 620, Intel Core i5-8250U
997 Points ∼17% -27%
1280x720 Cloud Gate Standard Graphics
Lenovo Yoga 730-15IKB
NVIDIA GeForce GTX 1050 (Laptop), Intel Core i7-8550U
26144 Points ∼100% +139%
Asus ZenBook Flip 15 UX561UD
NVIDIA GeForce GTX 1050 (Laptop), Intel Core i7-8550U
16381 Points ∼63% +50%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
15186 Points ∼58% +39%
Lenovo Yoga C740-15IML
Intel UHD Graphics 620, Intel Core i7-10510U
10927 Points ∼42%
Average Intel UHD Graphics 620
  (6910 - 11436, n=172)
9153 Points ∼35% -16%
Dell Inspiron 15 5579-9672
Intel UHD Graphics 620, Intel Core i5-8250U
8112 Points ∼31% -26%
Average of class Convertible
  (1023 - 37388, n=298)
6888 Points ∼26% -37%
3DMark 11 Performance
2275 pontos
3DMark Cloud Gate Standard Score
9909 pontos
3DMark Fire Strike Score
1249 pontos
3DMark Time Spy Score
497 pontos
Ajuda
baixo média alto ultra
BioShock Infinite (2013) 84.9 42.5 35.2 11.4 fps
Dota 2 Reborn (2015) 90 56.5 23.2 20.5 fps
Rise of the Tomb Raider (2016) 24.6 14.8 fps
X-Plane 11.11 (2018) 27.7 17.8 15.7 fps
Total War: Three Kingdoms (2019) 30.5 7.9 fps

Barulho

Ocioso
29.3 / 29.3 / 29.6 dB
Carga
32.4 / 33.3 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: 29.3 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2032.833.832.3312531.627.727.92931323030.128.54029.329.229.929.25026.926.827.126.96325.423.225.826.98024.923.82424.810026.22524.52512523.62424.423.816023.924.824.22520023.323.823.523.525023.623.323.423.631523.121.922.222.240022.321.820.121.450022.922.720.122.163022.12219.121.38002121.118.419.9100021.621.81820.1125022.622.217.620.7160023.222.516.921200022.32216.719.4250021.821.215.619.1315021.220.815.418.7400020.42015.217.9500019.519.215.217.7630019.518.615.316.4800017.31715.415.91000015.915.815.315.41250015.115.315.115.11600014.914.814.814.8SPL33.33329.331.5N1.91.81.21.6median 22.1median 21.8median 17.6median 20.1Delta1.91.73.72.234.234.533.732.234.234.23434.132.934.234.433.232.832.634.432.432.331.232.432.429.429.130.129.129.428.528.128.428.128.527.427.325.727.227.425.426.325.926.325.425.525.725.725.225.524.624.925.123.224.623.724.324.423.523.722.524.324.221.622.523.125.425.521.823.121.624.625.820.221.621.125.124.619.421.119.824.324.21919.819.824.724.718.319.820.929.129.217.820.919.326.426.917.719.319.426.727.317.419.419.525.826.217.519.519.826.526.917.719.818.128.92817.818.118.221.621.91818.218.521.321.518.218.518.519.619.718.418.518.719.319.318.718.719.119.219.118.919.119.219.219.319.119.219.519.619.619.519.531.637.537.530.531.61.52.52.51.31.5median 19.8median 24.7median 24.7median 18.9median 19.81.82.42.21.81.8hearing rangehide median Fan NoiseLenovo Yoga C740-15IMLLenovo Yoga 730-15IKB
Carga Máxima
 38.2 °C40.1 °C39.3 °C 
 35 °C33.4 °C27.4 °C 
 25.3 °C25.4 °C24.6 °C 
Máximo: 40.1 °C
Médio: 32.1 °C
38 °C42.3 °C40.1 °C
27.2 °C34.6 °C34.1 °C
25.4 °C27.6 °C27.6 °C
Máximo: 42.3 °C
Médio: 33 °C
alimentação elétrica  36 °C | Temperatura do quarto 20.1 °C | Voltcraft IR-900
(±) The average temperature for the upper side under maximal load is 32.1 °C / 90 F, compared to the average of 30.3 °C / 87 F for the devices in the class Convertible.
(±) The maximum temperature on the upper side is 40.1 °C / 104 F, compared to the average of 35.3 °C / 96 F, ranging from 21.8 to 55.7 °C for the class Convertible.
(±) The bottom heats up to a maximum of 42.3 °C / 108 F, compared to the average of 36.5 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 22.2 °C / 72 F, compared to the device average of 30.3 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 25.4 °C / 77.7 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 28.9 °C / 84 F (+3.5 °C / 6.3 F).
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2032.330.52527.928.83130.127.14029.928.95027.123.86325.825.7802428.510024.532.512524.438.916024.24620023.549.925023.450.931522.253.940020.158.850020.161.563019.165.480018.46710001864.4125017.664160016.962.6200016.760.5250015.655.8315015.457.2400015.261.9500015.255.3630015.352.3800015.455.81000015.351.81250015.146.91600014.838.8SPL29.373.3N1.231.6median 17.6median 55.8Delta3.77.234.132.234.133.732.933.732.232.632.230.132.430.130.729.130.728.728.128.727.527.227.530.326.330.341.625.241.650.923.250.952.323.552.352.421.652.461.421.861.468.520.268.565.219.465.266196671.918.371.970.317.870.36717.76769.817.469.873.317.573.365.617.765.663.817.863.859.41859.459.618.259.660.318.460.36518.76565.318.965.363.519.163.566.819.566.879.730.579.743.21.343.2median 65median 18.9median 655.81.85.8hearing rangehide median Pink NoiseLenovo Yoga C740-15IMLLenovo Yoga 730-15IKB
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Lenovo Yoga C740-15IML audio analysis

(±) | speaker loudness is average but good (73.3 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 10.4% lower than median
(±) | linearity of bass is average (11.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 7.2% higher than median
(+) | mids are linear (6.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.2% away from median
(±) | linearity of highs is average (10.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (18.4% difference to median)
Compared to same class
» 31% of all tested devices in this class were better, 9% similar, 60% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 32% of all tested devices were better, 7% similar, 61% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Lenovo Yoga 730-15IKB audio analysis

(±) | speaker loudness is average but good (73.34 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 16.9% lower than median
(±) | linearity of bass is average (12.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4% away from median
(±) | linearity of mids is average (7.7% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.6% away from median
(+) | highs are linear (6.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (14.5% difference to median)
Compared to same class
» 9% of all tested devices in this class were better, 4% similar, 87% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 13% of all tested devices were better, 4% similar, 84% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Consumo de energia
desligadodarklight 0.4 / 0.68 Watt
Ociosodarkmidlight 2.97 / 7.2 / 9.9 Watt
Carga midlight 40.8 / 64.7 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Lenovo Yoga C740-15IML
i7-10510U, UHD Graphics 620, Samsung SSD PM981 MZVLB512HAJQ, IPS LED, 1920x1080, 15.6
Lenovo Yoga 730-15IKB
8550U, GeForce GTX 1050 (Laptop), SK Hynix PC401 512GB M.2 (HFS512GD9TNG), IPS, 3840x2160, 15.6
Lenovo Yoga C940-15IRH
9750H, GeForce GTX 1650 Max-Q, Intel Optane Memory H10 with Solid State Storage 32GB + 512GB HBRPEKNX0202AL, IPS, 1920x1080, 15.6
Dell Inspiron 15 5579-9672
8250U, UHD Graphics 620, SK hynix SC311 SATA, IPS, 1920x1080, 15.6
Asus ZenBook Flip 15 UX561UD
8550U, GeForce GTX 1050 (Laptop), Micron 1100 MTFDDAV256TBN, IPS, 3840x2160, 15.6
HP Envy x360 15-bq102ng
2500U, Vega 8, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 15.6
Average Intel UHD Graphics 620
 
Average of class Convertible
 
Power Consumption
-33%
-99%
12%
-76%
-5%
6%
5%
Idle Minimum *
2.97
4.8
-62%
5.2
-75%
3.9
-31%
5.4
-82%
4.8
-62%
3.81 (1 - 12.4, n=192)
-28%
4.64 (1 - 23, n=388)
-56%
Idle Average *
7.2
10.1
-40%
10.7
-49%
6.6
8%
10.8
-50%
7
3%
7.03 (3 - 15.7, n=194)
2%
7.8 (1.3 - 32.3, n=388)
-8%
Idle Maximum *
9.9
10.7
-8%
24.3
-145%
9.3
6%
13.9
-40%
9.5
4%
8.75 (3.8 - 16.6, n=192)
12%
9.31 (1.8 - 61, n=388)
6%
Load Average *
40.8
44
-8%
84.4
-107%
30.2
26%
94
-130%
40.8
-0%
35 (8.1 - 51.6, n=192)
14%
26.7 (1.4 - 94, n=386)
35%
Load Maximum *
64.7
94.7
-46%
142.8
-121%
33.2
49%
116.6
-80%
44.3
32%
45.1 (22 - 86, n=194)
30%
32.1 (6.8 - 117, n=387)
50%
Witcher 3 ultra *
83.9

* ... smaller is better

Tempo de Execução da Bateria
NBC WiFi Websurfing Battery Test 1.3 (Edge)
10h 22min
NBC WiFi Websurfing Battery Test 1.3 max Brightness (Edge)
8h 15min
Big Buck Bunny H.264 1080p
11h 55min
Carga (máximo brilho)
2h 00min
Lenovo Yoga C740-15IML
i7-10510U, UHD Graphics 620, 60.3 Wh
Lenovo Yoga 730-15IKB
8550U, GeForce GTX 1050 (Laptop), 51.5 Wh
Lenovo Yoga C940-15IRH
9750H, GeForce GTX 1650 Max-Q, 69 Wh
Dell Inspiron 15 5579-9672
8250U, UHD Graphics 620, 42 Wh
Asus ZenBook Flip 15 UX561UD
8550U, GeForce GTX 1050 (Laptop), 52 Wh
HP Envy x360 15-bq102ng
2500U, Vega 8, 55.8 Wh
Average of class Convertible
 
Battery Runtime
-51%
-29%
-27%
-48%
-32%
-14%
Reader / Idle
697
1092
671
558
776 (117 - 2223, n=293)
H.264
715
324
-55%
401
-44%
261
-63%
454 (206 - 1070, n=119)
-37%
WiFi v1.3
622
370
-41%
583
-6%
435
-30%
311
-50%
426
-32%
456 (153 - 1010, n=264)
-27%
Load
120
50
-58%
59
-51%
110
-8%
84
-30%
145 (49 - 677, n=291)
21%

Pro

+ Chassi de alumínio robusto e de alta qualidade
+ Caneta digitalizadora incluída
+ Desenvolvimento de ruído / calor muito baixo
+ Bom alto-falantes
+ Excelente duração da bateria

Contra

- Desempenho mais fraco que seu antecessor
- Sem Thunderbolt 3
- A opção 4K UHD foi cortada
- LCD Full HD mal iluminado com baixa precisão de cores
In review: Lenovo Yoga C740-15IML. Courtesy of
In review: Lenovo Yoga C740-15IML. Courtesy of

A transformação do Yoga 720-15IKB para o Yoga 730-15IKB e finalmente, o mais recente Yoga C740-15IML é notável: De um conversível de alto desempenho com uma GPU Nvidia GeForce GTX (e um processador de 45 watts no caso do Yoga 720) a um conversível ultrabook com uma CPU ULV e sem dGPU. Evidentemente, o papel inicial desta série foi assumido pelo novo e mais caro Lenovo Yoga C940-15IRH.

O que resta é um bom conversível em um chassi de alumínio premium com uma caneta digitalizadora e muito pouco ruído e desenvolvimento de calor, além de uma boa duração da bateria. No entanto, o Yoga C740-15IML é mais fraco que seu antecessor em termos de desempenho devido à falta de uma dGPU e a solução de resfriamento inferior. A perda da porta Thunderbolt 3 é dolorosa e não há mais opção 4K UHD.

Downgrade de desempenho: O Yoga C740-15IML é um conversível diferente em comparação com seus dois antecessores. Embora isso não seja necessariamente ruim, os compradores definitivamente devem se afastar da fraca tela Full HD da nossa configuração. Felizmente, existe uma opção de LCD mais brilhante.

Definitivamente, poderíamos recomendar o Lenovo Yoga C740-15IML para usuários que procuram um conversível de baixa potência e 15,6 polegadas - se não fosse o nível de brilho muito baixo da tela. Por esse motivo, desaconselhamos fortemente este modelo específico. Em vez disso, os compradores do Yoga C740-15IML devem escolher a versão Full HD com 500 cd/m². Embora ainda não tenhamos sido capazes de determinar suas qualidades, elas dificilmente podem ser piores que as do painel neste dispositivo de teste.

Lenovo Yoga C740-15IML - 01/04/2020 v7
Benjamin Herzig

Acabamento
87 / 98 → 89%
Teclado
79%
Mouse
85%
Conectividade
62 / 75 → 83%
Peso
65 / 20-75 → 81%
Bateria
88%
Pantalha
77%
Desempenho do jogos
52 / 78 → 67%
Desempenho da aplicação
83 / 85 → 98%
Temperatura
93%
Ruído
97%
Audio
65 / 91 → 72%
Camera
34 / 85 → 40%
Médio
75%
85%
Convertible - Médio equilibrado

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> Análises e revisões de portáteis e celulares > Análises > Análises > Breve Análise do Portátil Lenovo Yoga C740-15IML: Potente duração da bateria, tela fraca
Benjamin Herzig, 2020-01-28 (Update: 2020-02- 1)