Breve Análise do Portátil Lenovo Yoga C740-15IML: Potente duração da bateria, tela fraca
Rating | Date | Model | Weight | Height | Size | Resolution | Price |
|---|---|---|---|---|---|---|---|
| 84.8 % v7 (old) | 01/2020 | Lenovo Yoga C740-15IML i7-10510U, UHD Graphics 620 | 1.9 kg | 17.25 mm | 15.60" | 1920x1080 | |
| 82.7 % v6 (old) | 07/2018 | Lenovo Yoga 730-15IKB i5-8550U, GeForce GTX 1050 Mobile | 1.9 kg | 17.2 mm | 15.60" | 3840x2160 | |
| 86 % v7 (old) | 12/2019 | Lenovo Yoga C940-15IRH i7-9750H, GeForce GTX 1650 Max-Q | 2 kg | 19.7 mm | 15.60" | 1920x1080 | |
| 81.2 % v6 (old) | 06/2018 | Dell Inspiron 15 5579-9672 i5-8250U, UHD Graphics 620 | 2.1 kg | 20.2 mm | 15.60" | 1920x1080 | |
| 82.1 % v6 (old) | 04/2018 | Asus ZenBook Flip 15 UX561UD i5-8550U, GeForce GTX 1050 Mobile | 2.1 kg | 21 mm | 15.60" | 3840x2160 | |
| 80.1 % v6 (old) | 04/2018 | HP Envy x360 15-bq102ng R5 2500U, Vega 8 | 2.1 kg | 19.6 mm | 15.60" | 1920x1080 |
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iluminação: 83 %
iluminação com acumulador: 287 cd/m²
Contraste: 1430:1 (Preto: 0.2 cd/m²)
ΔE Color 7.3 | 0.5-29.43 Ø4.92, calibrated: 5.1
ΔE Greyscale 7 | 0.5-98 Ø5.2
57.5% sRGB (Argyll 1.6.3 3D)
36.9% AdobeRGB 1998 (Argyll 1.6.3 3D)
40.33% AdobeRGB 1998 (Argyll 2.2.0 3D)
57.9% sRGB (Argyll 2.2.0 3D)
39.04% Display P3 (Argyll 2.2.0 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" | |
|---|---|---|---|---|---|
| Display | 65% | -5% | 114% | 6% | |
| Display P3 Coverage | 39.04 | 68.7 76% | 37 -5% | 86.6 122% | 41.36 6% |
| sRGB Coverage | 57.9 | 90 55% | 55.6 -4% | 100 73% | 62.2 7% |
| AdobeRGB 1998 Coverage | 40.33 | 65.8 63% | 38.23 -5% | 99.5 147% | 42.74 6% |
| Response Times | 28% | 15% | 4% | 21% | |
| Response Time Grey 50% / Grey 80% * | 50.8 ? | 34 ? 33% | 41 ? 19% | 52 ? -2% | 40 ? 21% |
| Response Time Black / White * | 32.4 ? | 25 ? 23% | 29 ? 10% | 29 ? 10% | 26 ? 20% |
| PWM Frequency | 961 ? | 25000 ? | |||
| 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 dE 2000 * | 7.3 | 3.9 47% | 5.25 28% | 4.38 40% | 4.35 40% |
| Colorchecker dE 2000 max. * | 21.7 | 7.5 65% | 10.04 54% | 7.59 65% | 8.98 59% |
| Colorchecker dE 2000 calibrated * | 5.1 | ||||
| Greyscale dE 2000 * | 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) | 36% /
27% | 6% /
7% | 53% /
50% | 17% /
20% |
* ... smaller is better
Display 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 0.1 (minimum) to 240 (maximum) ms. » 87 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (21 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 0.165 (minimum) to 636 (maximum) ms. » 86 % 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)
| 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 8743 (minimum: 5 - maximum: 343500) Hz was measured. | |||
| PCMark 8 Home Score Accelerated v2 | 3935 pontos | |
| PCMark 8 Work Score Accelerated v2 | 5366 pontos | |
| PCMark 10 Score | 4630 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% | -16% | |
| Write 4K | 142.3 | 164.9 16% | 48.25 -66% | 112.6 -21% | 116 -18% | 126.7 ? -11% |
| Read 4K | 47.56 | 50.5 6% | 23.77 -50% | 29.67 -38% | 42.73 -10% | 44 ? -7% |
| Write Seq | 2185 | 1262 -42% | 444.9 -80% | 432.1 -80% | 1222 -44% | 1617 ? -26% |
| Read Seq | 2235 | 2054 -8% | 497.5 -78% | 479.9 -79% | 1608 -28% | 1716 ? -23% |
| Write 4K Q32T1 | 515 | 477.6 -7% | 223.5 -57% | 191 -63% | 280.1 -46% | 413 ? -20% |
| Read 4K Q32T1 | 413.4 | 550 33% | 171.8 -58% | 246.5 -40% | 333.6 -19% | 420 ? 2% |
| Write Seq Q32T1 | 2981 | 1400 -53% | 511 -83% | 450.3 -85% | 1291 -57% | 2076 ? -30% |
| Read Seq Q32T1 | 3565 | 2672 -25% | 553 -84% | 522 -85% | 3183 -11% | 3130 ? -12% |
| 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 |
| Dota 2 Reborn (2015) | 90 | 56.5 | 23.2 | 20.5 |
| Rise of the Tomb Raider (2016) | 24.6 | 14.8 | ||
| X-Plane 11.11 (2018) | 27.7 | 17.8 | 15.7 | |
| Total War: Three Kingdoms (2019) | 30.5 | 7.9 |
Barulho
| Ocioso |
| 29.3 / 29.3 / 29.6 dB |
| Carga |
| 32.4 / 33.3 dB |
 | ||
30 dB silencioso 40 dB(A) audível 50 dB(A) ruidosamente alto |
||
min:  , med:  , max:  Audix TM1, Arta (15 cm de distância) environment noise: 29.3 dB(A) | ||
(±) 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 19.6 to 60 °C for the class Convertible.
(±) The bottom heats up to a maximum of 42.3 °C / 108 F, compared to the average of 36.8 °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 28.1 °C / 82.6 F (+2.7 °C / 4.9 F).
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 (21.3% difference to median)
Compared to same class
» 54% of all tested devices in this class were better, 12% similar, 34% worse
» The best had a delta of 6%, average was 21%, worst was 57%
Compared to all devices tested
» 56% of all tested devices were better, 7% similar, 37% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Lenovo Yoga 730-15IKB audio analysis
(±) | speaker loudness is average but good (73.3 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
(±) | linearity of overall sound is average (16.6% difference to median)
Compared to same class
» 27% of all tested devices in this class were better, 4% similar, 69% worse
» The best had a delta of 6%, average was 21%, worst was 57%
Compared to all devices tested
» 26% of all tested devices were better, 5% similar, 69% worse
» The best had a delta of 4%, average was 25%, worst was 134%
| desligado | 0.4 / 0.68 Watt |
| Ocioso | 2.97 / 7.2 / 9.9 Watt |
| Carga |
40.8 / 64.7 Watt |
   
| |
Key:
min: ,
med: ,
max: Metrahit Energy | |
| Lenovo Yoga C740-15IML i7-10510U, UHD Graphics 620, Samsung SSD PM981 MZVLB512HAJQ, IPS LED, 1920x1080, 15.6" | Lenovo Yoga 730-15IKB i5-8550U, GeForce GTX 1050 Mobile, SK Hynix PC401 512GB M.2 (HFS512GD9TNG), IPS, 3840x2160, 15.6" | Lenovo Yoga C940-15IRH i7-9750H, GeForce GTX 1650 Max-Q, Intel Optane Memory H10 with Solid State Storage 32GB + 512GB HBRPEKNX0202A(L/H), IPS, 1920x1080, 15.6" | Dell Inspiron 15 5579-9672 i5-8250U, UHD Graphics 620, SK hynix SC311 SATA, IPS, 1920x1080, 15.6" | Asus ZenBook Flip 15 UX561UD i5-8550U, GeForce GTX 1050 Mobile, Micron 1100 MTFDDAV256TBN, IPS, 3840x2160, 15.6" | HP Envy x360 15-bq102ng R5 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% | -23% | |
| Idle Minimum * | 2.97 | 4.8 -62% | 5.2 -75% | 3.9 -31% | 5.4 -82% | 4.8 -62% | 3.81 ? -28% | 5.21 ? -75% |
| Idle Average * | 7.2 | 10.1 -40% | 10.7 -49% | 6.6 8% | 10.8 -50% | 7 3% | 6.94 ? 4% | 8.16 ? -13% |
| Idle Maximum * | 9.9 | 10.7 -8% | 24.3 -145% | 9.3 6% | 13.9 -40% | 9.5 4% | 8.75 ? 12% | 11.1 ? -12% |
| Load Average * | 40.8 | 44 -8% | 84.4 -107% | 30.2 26% | 94 -130% | 40.8 -0% | 35 ? 14% | 46.2 ? -13% |
| Load Maximum * | 64.7 | 94.7 -46% | 142.8 -121% | 33.2 49% | 116.6 -80% | 44.3 32% | 47.5 ? 27% | 67 ? -4% |
| Witcher 3 ultra * | 83.9 |
* ... smaller is better
| Lenovo Yoga C740-15IML i7-10510U, UHD Graphics 620, 60.3 Wh | Lenovo Yoga 730-15IKB i5-8550U, GeForce GTX 1050 Mobile, 51.5 Wh | Lenovo Yoga C940-15IRH i7-9750H, GeForce GTX 1650 Max-Q, 69 Wh | Dell Inspiron 15 5579-9672 i5-8250U, UHD Graphics 620, 42 Wh | Asus ZenBook Flip 15 UX561UD i5-8550U, GeForce GTX 1050 Mobile, 52 Wh | HP Envy x360 15-bq102ng R5 2500U, Vega 8, 55.8 Wh | Average of class Convertible | |
|---|---|---|---|---|---|---|---|
| Battery Runtime | -51% | -29% | -27% | -48% | -32% | -0% | |
| H.264 | 715 | 324 -55% | 401 -44% | 261 -63% | 773 ? 8% | ||
| WiFi v1.3 | 622 | 370 -41% | 583 -6% | 435 -30% | 311 -50% | 426 -32% | 594 ? -5% |
| Load | 120 | 50 -58% | 59 -51% | 110 -8% | 84 -30% | 114.9 ? -4% | |
| Reader / Idle | 697 | 1092 | 671 | 558 | 1344 ? |
Pro
Contra
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 (old)
Benjamin Herzig
Price comparison
