In depth comparison and review of Lenovo ThinkPad L15 Gen 3 (21C3) and Lenovo ThinkPad X1 Carbon Gen 10 (21CB). Compare sizes, performance, storage capacities, batteries and other important specifications and features to easily choose the right laptop for you. Our goal is to help you uncover differences between the products and find the laptop that will best fit your needs.
Advantages and disadvantages of Lenovo ThinkPad L15 Gen 3 (21C3) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard feel
good battery life
reliable performance
decent connectivity options
mediocre display quality
heavier design
limited graphics performance
higher price point
Advantages and disadvantages of Lenovo ThinkPad X1 Carbon Gen 10 (21CB) based on its technical characteristics, features, user experience, expert reviews and price level.
ultra-lightweight design
impressive battery life
robust security features
high-resolution display
powerful processor performance
higher price point
limited port variety
no dedicated GPU
average speaker quality
DESIGN AND DIMENSIONS | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Product Type | Notebook - 180-degree hinge design | Notebook - 180-degree hinge design |
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Dimensions (WxDxH) | 36.02 cm x 23.7 cm x 1.993 cm | 31.56 cm x 22.25 cm x 1.536 cm |
Weight | 1.76 kg | 1.12 kg |
Case Material | Polycarbonate ABS (bottom), polycarbonate ABS (top) | Aluminium (bottom), carbon fibre (top) |
Colour | Thunder black | Deep black weave |
DISPLAY | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Screen Size (Type) | 15.6" - IPS | 14" OLED |
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LCD Backlight Technology | LED backlight | - |
Screen Resolution | 1920 x 1080 (Full HD) | 2880 x 1800 (2.8K) |
Widescreen | Yes | Yes |
Image Aspect Ratio | 16:9 | 16:10 |
Image Brightness | 250 cd/m² | 400 cd/m² |
Colour Gamut | 45% NTSC | 100% DCI-P3 |
Features | Anti-glare, 170° viewing angle | Anti-glare, anti-reflective, anti-smudge, 170° viewing angle, Eyesafe technology, HDR 500 True Black |
PROCESSOR | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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CPU | Intel Core i5 (12th Gen) 1235U / 1.3 GHz | Intel Core i5 (12th Gen) 1235U / 1.3 GHz |
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Max Turbo Speed | 4.4 GHz | 4.4 GHz |
Number of Cores | 10-core | 10-core |
Cache | 12 MB | 12 MB |
Platform Technology | - | Intel Evo |
Features | Integrated memory controller | Integrated memory controller |
MEMORY | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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RAM | 8 GB (2 x 4 GB) | 16 GB (provided memory is soldered) |
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Max RAM Supported | 64 GB | - |
RAM Type | DDR4 SDRAM | LPDDR5 SDRAM |
Speed | 3200 MHz | 5200 MHz |
Rated Speed | 3200 MHz | 5200 MHz |
Form Factor | SO-DIMM 260-pin | - |
Slots Qty | 2 | - |
Empty Slots | 0 | - |
STORAGE | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) | 512 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe), Performance |
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AUDIO & VIDEO | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Graphics Processor (GPU) | Intel Iris Xe Graphics | Intel Iris Xe Graphics |
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Max Monitors Supported | 3 external monitor(s) | 3 external monitor(s) |
Video System Features | Functions as Intel UHD graphics (for single-channel memory) | - |
Camera | Yes - 1080p | Yes - 1080p |
Camera Features | Privacy shutter, IR camera, Windows Hello, fixed focus | Privacy shutter, IR camera, fixed focus, MIPI, Computer Vision |
Sound | Stereo speakers, dual array microphone | Two tweeters, two woofers, quad array microphone |
Codec | Realtek ALC3287 | Realtek ALC3306 |
Compliant Standards | High Definition Audio, Dolby Audio, Dolby Voice | High Definition Audio, Dolby Atmos, Dolby Voice |
COMMUNICATIONS | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 | NFC, Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
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Wireless Controller | Intel Wi-Fi 6 AX 201 - M.2 Card | Intel Wi-Fi 6E AX 211 |
Network Interface | Gigabit Ethernet | - |
Features | Wake-on-LAN (WOL), dual stream (2x2) | Dual stream (2x2) |
WWAN |
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Generation | 4G upgradable | 4G upgradable |
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BATTERY | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Technology | Lithium polymer | Lithium polymer |
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Battery Capacity (Size) | 57 Wh | 57 Wh |
Battery Life | - | Up to 24.9 hours |
AC ADAPTER | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
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Output | 65 Watt | 65 Watt |
INPUT | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Type | Keyboard, TrackPoint, UltraNav | Keyboard, TrackPoint, UltraNav |
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Numeric Keypad | Yes | - |
Keyboard Backlight | Yes | Yes |
Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls, glass touchpad, air intake key design |
CONNECTIONS & EXPANSIONS | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Slots | - | 1 x Nano-SIM card (1 free) |
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Interfaces | USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) USB-C 3.2 Gen 1 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) Headphone/microphone combo jack HDMI LAN |
USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) 2 x USB4 (supports Thunderbolt 4, DisplayPort 1.4a Alt Mode) (Power Delivery 3.0) HDMI Headphone/microphone combo jack |
Memory Card Reader | Yes (microSD) | - |
SOFTWARE | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Operating System (OS) | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence - English | Windows 11 Pro - English |
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Software Included | - | Glance by Mirametrix, Intel Connectivity Performance Suite |
MISCELLANEOUS | Lenovo ThinkPad L15 Gen 3 (21C3) | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) |
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Included Accessories | USB-C power adapter | USB-C slim power adapter |
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Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
Security Slot Type | Kensington nano security slot | Kensington nano security slot |
Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
Features | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, NVMe password, USB FIDO (Fast Identity Online) device integration, Firmware Resiliency 3.0 |
Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified |
ENERGY STAR Certified | Yes | Yes |
EPEAT Compliant | EPEAT Gold | EPEAT Gold |
Max Operating Temperature | 35 °C | 35 °C |
Min Operating Temperature | 5 °C | 5 °C |
Humidity Range Operating | 8 - 95% | 8 - 95% |
Manufacturer Warranty | Base warranty - 1 year - pick-up and return Extended warranty - 1 year - on-site |
Base warranty - 3 years - pick-up and return Limited warranty - battery - 1 year Extended warranty - 3 years - on-site |