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Kort testrapport Lenovo Yoga C740-15IML Laptop: sterke batterijduur, zwak beeldscherm

Transformatie met prestatieverlies. De aparte grafische kaart is niet vervangen, 4K UHD is niet langer een optie en er is ook geen Thunderbolt 3 meer te vinden: in eerste instantie lijkt de Lenovo Yoga C740-15IML een duidelijke stap achteruit ten opzicht van zijn voorganger. Hoewel dit zeker geld voor sommige aspecten van de convertible, zijn er op andere gebieden verbeteringen. Helaas heeft ons testmodel last van een erg donker beeldscherm. Lees in ons testrapport wat Lenovo verder goed en niet goed doet.
Benjamin Herzig, 👁 Andreas Osthoff, Andrea Grüblinger,
Lenovo Yoga C740-15IML
Processor
Intel Core i7-10510U 4 x 1.8 - 4.8 GHz, Comet Lake-U
Grafische kaart
Geheugen
16384 MB 
, DDR4-2666, gesoldeerd
Beeldscherm
15.6 inch 16:9, 1920 x 1080 pixel 141 PPI, 10-punts multitouch beeldscherm, native pen support, B156HAN02.5, IPS LED, glimmend: nee, HDR
Moederbord
Intel Comet Lake-U PCH-LP Premium
Opslag
Samsung SSD PM981 MZVLB512HAJQ, 512 GB 
, M.2 2280 PCIe NVMe, 435 GB beschikbaar
Geluidskaart
Intel Comet Lake PCH-LP - cAVS
Verbindingen
4 USB 3.0, 2 DisplayPort, Audio Verbindingen: audio combo, 1 Vingerafdruklezer, Sensoren: versnellingssensor
Netwerkmogelijkheden
Intel Wi-Fi 6 AX201 (a/b/g/h/n = Wi-Fi 4/ac = Wi-Fi 5/ax = Wi-Fi 6), Bluetooth 5.1
Afmetingen
hoogte x breedte x diepte (in mm): 17.25 x 357.8 x 235.35
Batterij
60.3 Wh Lithium-Ion
Besturingssysteem
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: 720p met privacy afdekking
Bijkomende functionaliteiten
Luidsprekers: 2-watt stereo, Toetsenbord: 6-rij chiclet met numeriek toetspad, Toetsenbordverlichting: ja, Lenovo Active Pen 2, Lenovo USB type-C 3-in-1 hub, Lenovo Vantage, Lenovo Utility, Lenovo stylus configuratie, Microsoft Office Trial, 24 Maanden Garantie
Gewicht
1.862 kg, Voeding: 355 g
Prijs
1149 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Evaluatie
Datum
Model
Gewicht
Hoogte
Formaat
Resolutie
Best Price
85 %
01-2020
Lenovo Yoga C740-15IML
i7-10510U, UHD Graphics 620
1.9 kg17.25 mm15.6"1920x1080
83 %
07-2018
Lenovo Yoga 730-15IKB
i5-8550U, GeForce GTX 1050 Mobile
1.9 kg17.2 mm15.6"3840x2160
86 %
12-2019
Lenovo Yoga C940-15IRH
i7-9750H, GeForce GTX 1650 Max-Q
2 kg19.7 mm15.6"1920x1080
81 %
06-2018
Dell Inspiron 15 5579-9672
i5-8250U, UHD Graphics 620
2.1 kg20.2 mm15.6"1920x1080
82 %
04-2018
Asus ZenBook Flip 15 UX561UD
i5-8550U, GeForce GTX 1050 Mobile
2.1 kg21 mm15.6"3840x2160
80 %
04-2018
HP Envy x360 15-bq102ng
R5 2500U, Vega 8
2.1 kg19.6 mm15.6"1920x1080
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 - 1470, n=178)
559 MBit/s ∼39% -61%
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 - 1411, n=178)
553 MBit/s ∼40% -60%
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
Helderheidsverdeling
B156HAN02.5
X-Rite i1Pro 2
Maximum: 286 cd/m² Gemiddelde: 268.4 cd/m² Minimum: 2.8 cd/m²
Helderheidsverdeling: 83 %
Helderheid in Batterij-modus: 287 cd/m²
Contrast: 1430:1 (Zwart: 0.2 cd/m²)
ΔE Color 7.3 | 0.6-29.43 Ø5.8, calibrated: 5.1
ΔE Greyscale 7 | 0.64-98 Ø6
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%
Totaal Gemiddelde (Programma / Instellingen)
22% / 18%
12% / 10%
22% / 34%
23% / 24%

* ... kleiner is beter

Responstijd Scherm

De responstijden van het scherm tonen hoe snel het scherm in staat is om van één kleur naar de andere te veranderen. Trage responstijden kunnen aanleiding geven tot 'nabeelden' rond bewegende objecten of het scherm wazig maken (blur). Vooral spelers van snelle 3D-games hebben baat bij een scherm met snelle responstijden.
       Responstijd Zwart naar Wit
32.4 ms ... stijging ↗ en daling ↘ gecombineerd↗ 17.6 ms stijging
↘ 14.8 ms daling
Het scherm vertoonde trage responstijden in onze tests en is misschien te traag voor games.
Ter vergelijking: alle testtoestellen variëren van 0.8 (minimum) tot 240 (maximum) ms. » 84 % van alle toestellen zijn beter.
Dit betekent dat de gemeten responstijd slechter is dan het gemiddelde (24.4 ms) van alle geteste toestellen.
       Responstijd 50% Grijs naar 80% Grijs
50.8 ms ... stijging ↗ en daling ↘ gecombineerd↗ 24 ms stijging
↘ 26.8 ms daling
Het scherm vertoonde trage responstijden in onze tests en is misschien te traag voor games.
Ter vergelijking: alle testtoestellen variëren van 0.8 (minimum) tot 636 (maximum) ms. » 84 % van alle toestellen zijn beter.
Dit betekent dat de gemeten responstijd slechter is dan het gemiddelde (38.7 ms) van alle geteste toestellen.

Screen Flickering / PWM (Pulse-Width Modulation)

Om de schermhelderheid te verlagen schakelen sommige laptops het backlight erg snel aan en uit. Dit gebeurt aan een dergelijk hoge frequentie dat het niet zichtbaar is voor het menselijk oog. Als de frequentie te laag is kunnen personen met gevoelige ogen geïrriteerd geraken, hoofdpijn krijgen en zelfs flickering waarnemen.
Screen flickering / PWM niet waargenomen

Ter vergelijking: 51 % van alle geteste toestellen maakten geen gebruik van PWM om de schermhelderheid te verlagen. Als het wel werd gebruikt, werd een gemiddelde van 17553 (minimum: 5 - maximum: 2500000) Hz waargenomen.

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%
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
184 Points ∼94% -6%
Average Intel Core i7-10510U
  (113 - 202, n=35)
178 Points ∼91% -9%
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 - 213, n=341)
112 Points ∼57% -43%
CPU Multi 64Bit
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
1231 Points ∼100% +63%
Asus ZenBook Flip 15 UX561UD
Intel Core i7-8550U
761 Points ∼62% +1%
Lenovo Yoga C740-15IML
Intel Core i7-10510U
756 (560min - 756max) Points ∼61%
Lenovo Yoga 730-15IKB
Intel Core i7-8550U
723 Points ∼59% -4%
Average Intel Core i7-10510U
  (482 - 856, n=38)
671 Points ∼55% -11%
HP Envy x360 15-bq102ng
AMD Ryzen 5 2500U
618 Points ∼50% -18%
Dell Inspiron 15 5579-9672
Intel Core i5-8250U
562 Points ∼46% -26%
Average of class Convertible
  (33 - 1049, n=352)
342 Points ∼28% -55%
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
Help
PCMark 10
Digital Content Creation
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN
4146 Points ∼100% +18%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 Mobile, i5-8550U, 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
  (2465 - 4741, n=16)
3239 Points ∼78% -8%
HP Envy x360 15-bq102ng
Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP
2848 Points ∼69% -19%
Average of class Convertible
  (605 - 5161, n=134)
2659 Points ∼64% -25%
Dell Inspiron 15 5579-9672
UHD Graphics 620, i5-8250U, SK hynix SC311 SATA
2656 Points ∼64% -25%
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
  (6554 - 8036, n=16)
7243 Points ∼100% 0%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
6678 Points ∼92% -8%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN
6024 Points ∼83% -17%
Average of class Convertible
  (1121 - 7945, n=136)
5502 Points ∼76% -24%
Dell Inspiron 15 5579-9672
UHD Graphics 620, i5-8250U, SK hynix SC311 SATA
4811 Points ∼66% -34%
HP Envy x360 15-bq102ng
Vega 8, R5 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
  (8020 - 10546, n=16)
9266 Points ∼88% -12%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN
8388 Points ∼80% -20%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
8258 Points ∼78% -22%
Average of class Convertible
  (2489 - 10546, n=136)
7304 Points ∼69% -31%
Dell Inspiron 15 5579-9672
UHD Graphics 620, i5-8250U, SK hynix SC311 SATA
6349 Points ∼60% -40%
HP Envy x360 15-bq102ng
Vega 8, R5 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%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
4347 Points ∼94% -6%
Average Intel Core i7-10510U, Intel UHD Graphics 620
  (3783 - 4688, n=16)
4299 Points ∼93% -7%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN
4249 Points ∼92% -8%
Average of class Convertible
  (872 - 5214, n=137)
3358 Points ∼73% -27%
HP Envy x360 15-bq102ng
Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP
2944 Points ∼64% -36%
Dell Inspiron 15 5579-9672
UHD Graphics 620, i5-8250U, 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
  (3734 - 5366, n=13)
4987 Points ∼93% -7%
Dell Inspiron 15 5579-9672
UHD Graphics 620, i5-8250U, SK hynix SC311 SATA
4556 Points ∼85% -15%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN
4401 Points ∼82% -18%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
4382 Points ∼82% -18%
Average of class Convertible
  (1007 - 5366, n=259)
3831 Points ∼71% -29%
HP Envy x360 15-bq102ng
Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP
3800 Points ∼71% -29%
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
  (3157 - 4251, n=13)
3635 Points ∼92% -8%
Asus ZenBook Flip 15 UX561UD
GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN
3614 Points ∼92% -8%
Lenovo Yoga 730-15IKB
GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)
3505 Points ∼89% -11%
HP Envy x360 15-bq102ng
Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP
3462 Points ∼88% -12%
Dell Inspiron 15 5579-9672
UHD Graphics 620, i5-8250U, SK hynix SC311 SATA
3370 Points ∼86% -14%
Average of class Convertible
  (741 - 4741, n=309)
2871 Points ∼73% -27%
PCMark 8 Home Score Accelerated v2
3935 punten
PCMark 8 Work Score Accelerated v2
5366 punten
PCMark 10 Score
4630 punten
Help
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%
127 (90.4 - 176, n=64)
-11%
Read 4K
47.56
50.49
6%
23.77
-50%
29.67
-38%
42.73
-10%
44 (28 - 61.3, n=63)
-7%
Write Seq
2185
1262
-42%
444.9
-80%
432.1
-80%
1222
-44%
1617 (112 - 2730, n=62)
-26%
Read Seq
2235
2054
-8%
497.5
-78%
479.9
-79%
1608
-28%
1716 (501 - 2665, n=62)
-23%
Write 4K Q32T1
515.4
477.6
-7%
223.5
-57%
191
-63%
280.1
-46%
413 (198 - 1707, n=64)
-20%
Read 4K Q32T1
413.4
549.7
33%
171.8
-58%
246.5
-40%
333.6
-19%
420 (230 - 1015, n=64)
2%
Write Seq Q32T1
2981
1400
-53%
510.9
-83%
450.3
-85%
1291
-57%
2076 (1714 - 2994, n=64)
-30%
Read Seq Q32T1
3565
2672
-25%
552.8
-84%
522.4
-85%
3183
-11%
3130 (1772 - 3565, n=64)
-12%
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 Mobile, Intel Core i7-8550U
7339 Points ∼100% +267%
Lenovo Yoga 730-15IKB
NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U
6935 Points ∼94% +247%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8 (Ryzen 2000/3000), 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=225)
1743 Points ∼24% -13%
Dell Inspiron 15 5579-9672
Intel UHD Graphics 620, Intel Core i5-8250U
1529 Points ∼21% -24%
Average of class Convertible
  (173 - 17421, n=365)
1509 Points ∼21% -25%
3DMark
2560x1440 Time Spy Graphics
Lenovo Yoga 730-15IKB
NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U
1416 Points ∼100% +227%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8 (Ryzen 2000/3000), AMD Ryzen 5 2500U
649 Points ∼46% +50%
Average of class Convertible
  (85 - 5126, n=63)
638 Points ∼45% +47%
Lenovo Yoga C740-15IML
Intel UHD Graphics 620, Intel Core i7-10510U
433 Points ∼31%
Average Intel UHD Graphics 620
  (299 - 443, n=75)
378 Points ∼27% -13%
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 Mobile, Intel Core i7-8550U
5965 Points ∼100% +336%
Asus ZenBook Flip 15 UX561UD
NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U
5329 Points ∼89% +289%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8 (Ryzen 2000/3000), AMD Ryzen 5 2500U
2310 Points ∼39% +69%
Lenovo Yoga C740-15IML
Intel UHD Graphics 620, Intel Core i7-10510U
1369 Points ∼23%
Average of class Convertible
  (132 - 13158, n=273)
1215 Points ∼20% -11%
Average Intel UHD Graphics 620
  (557 - 1418, n=195)
1152 Points ∼19% -16%
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 Mobile, Intel Core i7-8550U
26144 Points ∼100% +139%
Asus ZenBook Flip 15 UX561UD
NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U
16381 Points ∼63% +50%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8 (Ryzen 2000/3000), 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=207)
9227 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 - 38419, n=319)
7517 Points ∼29% -31%
3DMark 11 Performance
2275 punten
3DMark Cloud Gate Standard Score
9909 punten
3DMark Fire Strike Score
1249 punten
3DMark Time Spy Score
497 punten
Help
lage gem. hoge 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

Geluidsniveau

Onbelast
29.3 / 29.3 / 29.6 dB (A)
Belasting
32.4 / 33.3 dB (A)
  red to green bar
 
 
30 dB
stil
40 dB(A)
hoorbaar
50 dB(A)
luid
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm afstand)   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
Max. Belasting
 38.2 °C40.1 °C39.3 °C 
 35 °C33.4 °C27.4 °C 
 25.3 °C25.4 °C24.6 °C 
Maximum: 40.1 °C
Gemiddelde: 32.1 °C
38 °C42.3 °C40.1 °C
27.2 °C34.6 °C34.1 °C
25.4 °C27.6 °C27.6 °C
Maximum: 42.3 °C
Gemiddelde: 33 °C
Stroomadapter (max.)  36 °C | Kamertemperatuur 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
» 33% of all tested devices in this class were better, 8% similar, 58% worse
» The best had a delta of 10%, average was 22%, worst was 53%
Compared to all devices tested
» 33% of all tested devices were better, 7% similar, 60% worse
» The best had a delta of 3%, average was 21%, worst was 65%

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, 86% worse
» The best had a delta of 10%, average was 22%, worst was 53%
Compared to all devices tested
» 13% of all tested devices were better, 4% similar, 83% worse
» The best had a delta of 3%, average was 21%, worst was 65%

Stroomgebruik
Uit / Standbydarklight 0.4 / 0.68 Watt
Inactiefdarkmidlight 2.97 / 7.2 / 9.9 Watt
Belasting 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
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%
5%
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=236)
-28%
4.57 (1 - 23, n=414)
-54%
Idle Average *
7.2
10.1
-40%
10.7
-49%
6.6
8%
10.8
-50%
7
3%
6.96 (2.8 - 15.7, n=238)
3%
7.73 (1.3 - 32.3, n=414)
-7%
Idle Maximum *
9.9
10.7
-8%
24.3
-145%
9.3
6%
13.9
-40%
9.5
4%
8.72 (3.8 - 16.6, n=236)
12%
9.25 (1.8 - 61, n=414)
7%
Load Average *
40.8
44
-8%
84.4
-107%
30.2
26%
94
-130%
40.8
-0%
35.4 (8.1 - 51.6, n=236)
13%
27.5 (1.4 - 94, n=412)
33%
Load Maximum *
64.7
94.7
-46%
142.8
-121%
33.2
49%
116.6
-80%
44.3
32%
47.2 (22 - 96.3, n=238)
27%
33.6 (6.8 - 118, n=413)
48%
Witcher 3 ultra *
83.9

* ... kleiner is beter

Batterijduur
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
Belast (maximale helderheid)
2h 00min
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
 
Batterijduur
-51%
-29%
-27%
-48%
-32%
-13%
Reader / Idle
697
1092
671
558
801 (117 - 2892, n=307)
H.264
715
324
-55%
401
-44%
261
-63%
464 (206 - 1070, n=127)
-35%
WiFi v1.3
622
370
-41%
583
-6%
435
-30%
311
-50%
426
-32%
467 (153 - 1141, n=290)
-25%
Load
120
50
-58%
59
-51%
110
-8%
84
-30%
145 (49 - 677, n=308)
21%

Pro

+ robuuste aluminium behuizing van hoge kwaliteit
+ digitizer pen meegeleverd
+ erg lage warmte- en geluidsontwikkeling
+ goede luidsprekers
+ uitstekende batterijduur

Contra

- zwakkere prestaties dan zijn voorganger
- geen Thunderbolt 3
- geen 4K UHD optie
- donker Full HD LCD met slechte kleurweergave
In review: Lenovo Yoga C740-15IML. Courtesy of
In review: Lenovo Yoga C740-15IML. Courtesy of

Dit is de verkorte versie van het originele artikel. Het volledige, Engelse testrapport vind je hier.

De transformatie van de Yoga 720-15IKB naar de Yoga 730-15IKB en dan naar de Yoga C740-15IML is opmerkelijk. Van een krachtige convertible met een NVIDIA GeForce GTX GPU (en een 45-watt processor in het geval van de Yoga 720) naar een convertible met een ULV CPU en geen aparte videokaart. Blijkbaar is de initiële rol van deze serie overgenomen door de nieuwere en duurdere Lenovo Yoga C940-15IRH.

Wat overblijft is een goede convertible in een eersteklas aluminium behuizing, een digitizer pen, weinig lawaai en weinig warmteontwikkeling evenals een goede batterijduur. Echter is de Yoga C740-15IML minder krachtig dan zijn voorloper qua prestaties door het gebrek aan een videokaart en een minder goed koelsysteem. Het verlies van de Thunderbolt 3 poorten is pijnlijk, er is ook geen 4K UHD optie meer.

Prestatieverlies: De Yoga C740-15IML is een andere convertible ten opzichte van zijn voorlopers. Hoewel dit niet perse slecht is, moeten eventuele kopers zeker opletten voor het donkere Full HD beeldscherm. Gelukkig is er een helderdere LCD optie.

We zouden zeker de Lenovo Yoga C740-15IML aanraden aan gebruikers die zoeken naar een 15.6-inch convertible met weinig vermogen. Helaas vanwege het beeldscherm zijn veel te lage helderheid raden wij het aanschaffen van dit specifieke model sterk af. In plaats daarvan zouden geïnteresseerde kopers de Full HD versie moeten kiezen met 500 cd/m². Hoewel we zijn kwaliteiten nog niet hebben kunnen erkennen, kan deze moeilijk slechter zijn dan die van het paneel van ons testmodel.

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

Behuizing
87 / 98 → 89%
Toetsenbord
79%
Aanwijsapparaat
85%
Aansluitmogelijkheden
62 / 75 → 83%
Gewicht
65 / 20-75 → 81%
Batterij
88%
Beeldscherm
77%
Gaming-performance
52 / 78 → 67%
Applicatie-performance
83 / 85 → 98%
Temperatuur
93%
Luidheid
97%
Audio
65 / 91 → 72%
Camera
34 / 85 → 40%
Gemiddelde
75%
85%
Convertible - Gewogen Gemiddelde

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> Overzichten en testrapporten over laptops en mobieltjes > Testrapporten > Kort testrapport Lenovo Yoga C740-15IML Laptop: sterke batterijduur, zwak beeldscherm
Benjamin Herzig, 2020-01-11 (Update: 2020-01-13)