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MagyarLenovo ThinkPad X1 Carbon G7 2020 Laptop Review: Same Look, New Processor
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Now in its 7th generation, the Lenovo ThinkPad X1 Carbon series has been successful at attracting users who want a ThinkPad T series laptop without the girth, size, and weight normally associated with it. It's as close to a ThinkPad Ultrabook as you can get without sacrificing many of the features that have come to define a ThinkPad.
The unit we'll be looking at here comes equipped with the latest Intel Comet Lake-U Core i7-10510U CPU and a 4K UHD glossy display to replace last year's 2019 Whiskey Lake-U configurations. Its chassis is otherwise identical to the 2019 and 2018 models and so our comments on the ports, keyboard, speakers, and other physical features can be found on our existing reviews below.
Computer Upgrade King and Amazon have this exact SKU for $2300 USD. Direct competitors to the ThinkPad X1 Carbon include other thin-and-light business laptops like the HP EliteBook 1040 series, Dell Latitude 7000/9000 series, Microsoft Surface Laptop series, and the Toshiba Portege series.
More Lenovo ThinkPad reviews:
Rating | Date | Model | Weight | Height | Size | Resolution | Best Price |
|---|---|---|---|---|---|---|---|
| 89 % | 03/2020 | Lenovo ThinkPad X1 Carbon G7 20R1-000YUS i7-10510U, UHD Graphics 620 | 1.2 kg | 15.4 mm | 14" | 3840x2160 | |
| 90 % | 08/2019 | Lenovo ThinkPad X1 Yoga 2019-20QGS00A00 i7-8565U, UHD Graphics 620 | 1.3 kg | 15.5 mm | 14" | 1920x1080 | |
| 87 % | 05/2019 | Lenovo ThinkPad T490-20N3S02L00 i7-8565U, GeForce MX250 | 1.5 kg | 18.9 mm | 14" | 1920x1080 | |
| 90 % | 07/2019 | Lenovo ThinkPad X1 Carbon 2019-20QE000VGE i7-8665U, UHD Graphics 620 | 1.1 kg | 14.9 mm | 14" | 2560x1440 | |
| 84 % | 12/2019 | Microsoft Surface Laptop 3 15 i7-1065G7 i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU) | 1.5 kg | 14.7 mm | 15" | 2496x1664 |
Case
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Connectivity
Communication
The Intel 9560 comes standard for 802.11ac or Wi-Fi 5 connectivity. Unfortunately, Lenovo offers no AX200/AX201 options for Wi-Fi 6 connectivity but at least users can configure with optional WWAN 4G LTE CAT9 or upgrade to the Intel 9560 vPro. We're able to record average transfer rates of 1100 to 1200 Mbps when standing a meter away from our Netgear RAX200 Wi-Fi 6-enabled router.
| Networking | |
| iperf3 Client (receive) TCP 1 m 4M x10 | |
| Dell XPS 13 9300 Core i7-1065G7 | |
| Acer Aspire 5 A514-52-58U3 | |
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS | |
| MSI Modern 15 A10RB | |
| iperf3 Client (transmit) TCP 1 m 4M x10 | |
| Acer Aspire 5 A514-52-58U3 | |
| MSI Modern 15 A10RB | |
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS | |
| Dell XPS 13 9300 Core i7-1065G7 | |
Webcam
Maintenance
Display
This is the first ThinkPad X1 Carbon we've tested with a 4K UHD display as all previous units would have FHD or WQHD panels instead. Its exact BOE NV140QUM-N53 IPS panel can be found on no other laptop in our database, but the latest Yoga C940 uses a very similar BOE NV140QUM-N54.
Visual quality is excellent as the glossy display is crisper and brighter and with a slightly wider color gamut than older models. It's biggest drawback is the slower response times for more noticeable ghosting, but this is a common trade off between FHD and 4K UHD displays. Unfortunately, pulse-width modulation is now present on all brightness levels except maximum which may impact users sensitive to onscreen flickering.
| |||||||||||||||||||||||||
Brightness Distribution: 90 %
Center on Battery: 532 cd/m²
Contrast: 1298:1 (Black: 0.41 cd/m²)
ΔE Color 6.88 | 0.6-29.43 Ø5.9, calibrated: 2.52
ΔE Greyscale 10.5 | 0.64-98 Ø6.1
99.7% sRGB (Argyll 3D) 74.1% AdobeRGB 1998 (Argyll 3D)
Gamma: 1.98
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS BOE NV140QUM-N53, IPS, 14, 3840x2160 | Lenovo ThinkPad X1 Carbon 2019-20QD00M7GE N140HCR-GA2, IPS, 14, 1920x1080 | Lenovo ThinkPad X1 Carbon 2018-20KGS5DU00 LP140QH2-SPB1, IPS, 14, 2560x1440 | Lenovo ThinkPad X1 Carbon G6-20KG0025UK Lenovo LEN40A9 / AUO B140HAK02.3, IPS, 14, 1920x1080 | Lenovo ThinkPad X1 Carbon 2017-20HR0021GE B140HAN03_1, IPS, 14, 1920x1080 | Lenovo ThinkPad X1 Carbon Touch 20A7-002DGE LG Philips LP140GH1-SPA2, IPS-Panel, 14, 2560x1440 | |
|---|---|---|---|---|---|---|
| Response Times | 4111% | 21% | 21% | 4% | ||
| Response Time Grey 50% / Grey 80% * | 49.2 (22, 27.2) | 40.8 (21.2, 19.6) 17% | 38 (19.2, 18.8) 23% | 40 (18, 22) 19% | 48 (22, 26) 2% | |
| Response Time Black / White * | 32.2 (19.2, 13.2) | 27.2 (15.6, 11.6) 16% | 26 (14, 12) 19% | 25 (14, 11) 22% | 30.4 (18.8, 11.6) 6% | |
| PWM Frequency | 201.6 (99) | 25000 (50) 12301% | ||||
| Screen | 20% | 1% | 19% | 11% | -11% | |
| Brightness middle | 532 | 406 -24% | 316 -41% | 298 -44% | 278 -48% | 228 -57% |
| Brightness | 513 | 372 -27% | 311 -39% | 287 -44% | 271 -47% | 226 -56% |
| Brightness Distribution | 90 | 88 -2% | 84 -7% | 91 1% | 91 1% | 89 -1% |
| Black Level * | 0.41 | 0.25 39% | 0.35 15% | 0.2 51% | 0.16 61% | 0.23 44% |
| Contrast | 1298 | 1624 25% | 903 -30% | 1490 15% | 1738 34% | 991 -24% |
| Colorchecker DeltaE2000 * | 6.88 | 2.9 58% | 4.5 35% | 2.19 68% | 4.5 35% | 6.29 9% |
| Colorchecker DeltaE2000 max. * | 12.65 | 6.1 52% | 10.3 19% | 4.39 65% | 8.4 34% | |
| Colorchecker DeltaE2000 calibrated * | 2.52 | 1.1 56% | 1.6 37% | 1.67 34% | ||
| Greyscale DeltaE2000 * | 10.5 | 4.4 58% | 7.7 27% | 1.97 81% | 3.2 70% | 7.79 26% |
| Gamma | 1.98 111% | 2.24 98% | 2.2 100% | 2.43 91% | 2.02 109% | 2.36 93% |
| CCT | 7394 88% | 5967 109% | 6639 98% | 6571 99% | 7042 92% | 5531 118% |
| Color Space (Percent of AdobeRGB 1998) | 74.1 | 63.4 -14% | 68.6 -7% | 62 -16% | 57 -23% | 51.7 -30% |
| Color Space (Percent of sRGB) | 99.7 | 98.6 -1% | 97.9 -2% | 95 -5% | 87.5 -12% | |
| Total Average (Program / Settings) | 2066% /
897% | 11% /
4% | 20% /
19% | 8% /
9% | -11% /
-11% |
* ... smaller is better
Color space covers all of sRGB and 74 percent of AdobeRGB to be slightly larger than on most other flagship subnotebooks. Larger 15.6-inch 4K UHD solutions like the XPS 15, Razer Blade 15, or ZenBook Pro series have even wider gamuts at 88 percent AdobeRGB or larger for potentially more accurate colors.
Further measurements with an X-Rite colorimeter reveal that the display could have been better calibrated out of the box. Color temperature, for example, is on the cool side and RGB balance is way off. Our calibration attempt improves colors and grayscale significantly by reducing the average DeltaE values to just 1 to 3. We recommend playing around with the Lenovo Display Optimizer software or applying our calibreated ICM profile above to get the most out of the display.
Display Response Times
| ↔ Response Time Black to White | ||
|---|---|---|
| 32.2 ms ... rise ↗ and fall ↘ combined | ↗ 19.2 ms rise |  |
| ↘ 13.2 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 (24.7 ms). | ||
| ↔ Response Time 50% Grey to 80% Grey | ||
| 49.2 ms ... rise ↗ and fall ↘ combined | ↗ 22 ms rise |  |
| ↘ 27.2 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. » 81 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (39.2 ms). | ||
Screen Flickering / PWM (Pulse-Width Modulation)
| Screen flickering / PWM detected | 201.6 Hz | ≤ 99 % brightness setting |  |
The display backlight flickers at 201.6 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 99 % and below. There should be no flickering or PWM above this brightness setting. The frequency of 201.6 Hz is relatively low, so sensitive users will likely notice flickering and experience eyestrain at the stated brightness setting and below. In comparison: 50 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 18084 (minimum: 5 - maximum: 2500000) Hz was measured. | |||
Glare is inevitable on the glossy display and the backlight is nowhere near bright enough for comfortable use when working under sunlight. Even so, outdoor visibility is still better than the 2018 or 2017 X1 Carbon models where the displays were much dimmer. The wide viewing angles and 180-degree hinges help to minimize glare somewhat.
Performance
Like most ThinkPad systems, Lenovo offers a wide range of CPU and display options from the 8th gen quad-core Core i5-8265U all the way up to the 10th gen hexa-core Core i7-10710U. There are no discrete GPUs or Iris Plus options, however, so heavy photo editors or light gamers need not apply. It would have been great to see some AMD Ryzen options since the RX Vega series is significantly faster than the UHD Graphics 620 without needing the break the 15 W to 25 W TDP.
RAM is soldered up to 16 GB of LPDDR3-2133. The system exhibits DPC latency issues when web browsing, playing 4K YouTube videos, and running Prime95 in sequence.
Processor
Much like what we discovered on last year's ThinkPad X1 Carbon and the ThinkPad T590 each with the Core i7-8565U, this newer Core i7-10510U SKU exhibits the same cycling clock rate behavior when subjected to long periods of processing stress as shown by our CineBench R15 Multi-Thread loop test below. CPU performance would start out strong before slowly declining into a steep variable pattern. Running CPU benchmarks just once or twice is therefore not an accurate representation of the performance of the ThinkPad X1 Carbon. Other laptops, like the Microsoft Surface Laptop 3 15, do not suffer from this issue and are able to maintain more consistent performance levels over time.
Opting for the pricier hexa-core Core i7-10710U SKU instead of the Core i5-10510U will improve CPU performance by 40 to 50 percent. However, we suspect that the Core i7 configuration will also suffer from the same cycling clock rates meaning that its advantages over our Core i5 SKU will likely diminish when running high loads for long periods.
See our dedicated page on the Core i7-10510U for more technical information benchmark comparisons.
| Cinebench R20 | |
| CPU (Single Core) | |
| Lenovo ThinkPad T590-20N4002VGE | |
| Dell XPS 13 7390 Core i7-10710U | |
| Lenovo ThinkPad P73-20QR002DGE | |
| Lenovo ThinkPad T490 20RY0002US | |
| Lenovo Yoga C940-14IIL 81Q9 | |
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS | |
| Average Intel Core i7-10510U (362 - 497, n=21) | |
| Lenovo ThinkPad L13 Yoga 20R6S00800 | |
| Lenovo ThinkPad L590-20Q70019GE | |
| Lenovo ThinkPad E495-20NEA001GE | |
| CPU (Multi Core) | |
| Lenovo ThinkPad P73-20QR002DGE | |
| Dell XPS 13 7390 Core i7-10710U | |
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS | |
| Lenovo Yoga C940-14IIL 81Q9 | |
| Lenovo ThinkPad T590-20N4002VGE | |
| Lenovo ThinkPad T490 20RY0002US | |
| Lenovo ThinkPad E495-20NEA001GE | |
| Average Intel Core i7-10510U (1015 - 1897, n=21) | |
| Lenovo ThinkPad L13 Yoga 20R6S00800 | |
| Lenovo ThinkPad L590-20Q70019GE | |
| Cinebench R15 | |
| CPU Single 64Bit | |
| Lenovo ThinkPad T590-20N4002VGE | |
| Lenovo ThinkPad P73-20QR002DGE | |
| Lenovo ThinkPad T490 20RY0002US | |
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS | |
| Lenovo Yoga C940-14IIL 81Q9 | |
| Average Intel Core i7-10510U (141 - 202, n=26) | |
| Dell XPS 13 7390 Core i7-10710U | |
| Lenovo ThinkPad L13 Yoga 20R6S00800 | |
| Lenovo ThinkPad L590-20Q70019GE | |
| Lenovo ThinkPad E495-20NEA001GE | |
| CPU Multi 64Bit | |
| Lenovo ThinkPad P73-20QR002DGE | |
| Dell XPS 13 7390 Core i7-10710U | |
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS | |
| Lenovo Yoga C940-14IIL 81Q9 | |
| Lenovo ThinkPad T590-20N4002VGE | |
| Average Intel Core i7-10510U (520 - 856, n=28) | |
| Lenovo ThinkPad E495-20NEA001GE | |
| Lenovo ThinkPad T490 20RY0002US | |
| Lenovo ThinkPad L590-20Q70019GE | |
| Lenovo ThinkPad L13 Yoga 20R6S00800 | |
| Cinebench R11.5 | |
| CPU Single 64Bit | |
| Dell XPS 13 7390 Core i7-10710U | |
| Lenovo ThinkPad L13 Yoga 20R6S00800 | |
| CPU Multi 64Bit | |
| Dell XPS 13 7390 Core i7-10710U | |
| Lenovo ThinkPad L13 Yoga 20R6S00800 | |
| Cinebench R10 | |
| Rendering Multiple CPUs 32Bit | |
| Dell XPS 13 7390 Core i7-10710U | |
| Average Intel Core i7-10510U (25882 - 26265, n=2) | |
| Rendering Single 32Bit | |
| Average Intel Core i7-10510U (7268 - 7748, n=2) | |
| Dell XPS 13 7390 Core i7-10710U | |
| wPrime 2.10 - 1024m | |
| Dell XPS 13 7390 Core i7-10710U | |
* ... smaller is better
System Performance
| PCMark 8 Home Score Accelerated v2 | 3182 points | |
| PCMark 8 Work Score Accelerated v2 | 4396 points | |
Help | ||
Storage Devices
There is only room for one internal storage drive as the second smaller M.2 slot may be occupied by a WWAN module. Our 2020 test unit comes equipped with a 512 GB WDC PC SN730 NVMe SSD whereas our 2019 unit came with a 512 GB WDC PC SN720. Western Digital advertises maximum sequential read and write rates of 3400 MB/s and 2700 MB/s, respectively, which we are able to confirm when running the CrystalDiskMark 5 Q32T1 test. In practice, users won't notice the minor speed upgrades over the SN720 series.
See our table of HDDs and SSDs for more benchmark comparisons.
| Lenovo ThinkPad X1 Carbon G7 20R1-000YUS WDC PC SN730 SDBPNTY-512G | Lenovo ThinkPad X1 Carbon 2019-20QE000VGE WDC PC SN720 SDAQNTW-512G | Lenovo ThinkPad X1 Extreme 2019 20QV000WGE Samsung SSD PM981 MZVLB512HAJQ | Lenovo ThinkPad X1 Yoga 2019-20QGS00A00 WDC PC SN720 SDAPNTW-512G | Lenovo ThinkPad X1 Carbon 2018-20KGS5DU00 Samsung SSD PM981 MZVLB512HAJQ | |
|---|---|---|---|---|---|
| AS SSD | 40% | 48% | 31% | 3% | |
| Copy Game MB/s | 1008.36 | 920.56 -9% | |||
| Copy Program MB/s | 525.29 | 498.25 -5% | |||
| Copy ISO MB/s | 1384.11 | 1809.67 31% | |||
| Score Total | 2885 | 3874 34% | 4650 61% | 4245 47% | 2659 -8% |
| Score Write | 1224 | 1553 27% | 2301 88% | 1832 50% | 1264 3% |
| Score Read | 1110 | 1554 40% | 1556 40% | 1610 45% | 950 -14% |
| Access Time Write * | 0.074 | 0.023 69% | 0.027 64% | 0.023 69% | 0.033 55% |
| Access Time Read * | 0.058 | 0.053 9% | 0.088 -52% | 0.056 3% | |
| 4K-64 Write | 949.77 | 1148.49 21% | 1952.2 106% | 1431.6 51% | 1019.87 7% |
| 4K-64 Read | 885.4 | 1209.22 37% | 1265.43 43% | 1275.8 44% | 663.95 -25% |
| 4K Write | 147.92 | 175.63 19% | 138.12 -7% | 162.44 10% | 109.36 -26% |
| 4K Read | 45.86 | 47.39 3% | 54.96 20% | 45.66 0% | 46.21 1% |
| Seq Write | 1258.8 | 2287 82% | 2106 67% | 2380.57 89% | 1343 7% |
| Seq Read | 1786.24 | 2978 67% | 2352 32% | 2888.1 62% | 2399 34% |
| CrystalDiskMark 5.2 / 6 | 9% | 1% | 10% | -24% | |
| Write 4K | 151.5 | 196.91 30% | 148.08 -2% | 194.3 28% | 98.64 -35% |
| Read 4K | 45.83 | 51.33 12% | 47.31 3% | 51.24 12% | 39.75 -13% |
| Write Seq | 2060 | 1714.6 -17% | 1414.08 -31% | 1773 -14% | 1757.08 -15% |
| Read Seq | 1973 | 2464.05 25% | 1320.24 -33% | 2512 27% | 1168.86 -41% |
| Write 4K Q32T1 | 489.8 | 429.09 -12% | 493.59 1% | 431.7 -12% | 333.82 -32% |
| Read 4K Q32T1 | 386.2 | 542.46 40% | 593.94 54% | 539 40% | 267.97 -31% |
| Write Seq Q32T1 | 2703 | 2520.8 -7% | 2969.6 10% | 2538 -6% | 2069.1 -23% |
| Read Seq Q32T1 | 3376 | 3481.3 3% | 3471.7 3% | 3489 3% | 3425.6 1% |
| Write 4K Q8T8 | 866.9 | ||||
| Read 4K Q8T8 | 1314.7 | ||||
| Total Average (Program / Settings) | 25% /
26% | 25% /
28% | 21% /
23% | -11% /
-8% |
* ... smaller is better
GPU Performance
The Comet Lake-U family uses the same UHD Graphics 620 GPU as found on the much older Kaby Lake family. It's sufficient for 4K video streaming and monitor output, but the GPU has become outdated for any sort of gaming or editing by today's standards. For significantly faster graphics performance, consider laptops with Ice Lake CPUs or the AMD Ryzen series.
See our dedicated page on the UHD Graphics 620 for more benchmark comparisons.
| 3DMark 11 Performance | 2232 points | |
| 3DMark Ice Storm Standard Score | 61083 points | |
| 3DMark Cloud Gate Standard Score | 9117 points | |
| 3DMark Fire Strike Score | 1218 points | |
| 3DMark Time Spy Score | 485 points | |
Help | ||