In depth comparison and review of Lenovo ThinkPad X1 Carbon Gen 10 (21CB) and Lenovo ThinkBook 15 G4 ABA (21DL). 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.
| DESIGN AND DIMENSIONS | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Product Type | Notebook - 180-degree hinge design | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 31.56 cm x 22.25 cm x 1.536 cm | 35.7 cm x 23.5 cm x 1.89 cm |
| Weight | 1.12 kg | 1.7 kg |
| Case Material | Aluminium (bottom), carbon fibre (top) | Aluminium (top), polycarbonate ABS (bottom) |
| Colour | Deep black weave | Dual tone mineral grey |
| DISPLAY | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Screen Size (Type) | 14" OLED | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | - | LED backlight |
| Screen Resolution | 2880 x 1800 (2.8K) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:10 | 16:9 |
| Image Brightness | 400 cd/m² | 300 cd/m² |
| Colour Gamut | 100% DCI-P3 | 45% NTSC |
| Features | Anti-glare, anti-reflective, anti-smudge, 170° viewing angle, Eyesafe technology, HDR 500 True Black | Anti-glare, 170° viewing angle, DC dimmer |
| PROCESSOR | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| CPU | Intel Core i5 (12th Gen) 1235U / 1.3 GHz | AMD Ryzen 5 5625U / 2.3 GHz |
|---|---|---|
| Max Turbo Speed | 4.4 GHz | 4.3 GHz |
| Number of Cores | 10-core | 6-core |
| Cache | 12 MB | L3 - 16 MB |
| Platform Technology | Intel Evo | - |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| RAM | 16 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | - | 40 GB |
| RAM Type | LPDDR5 SDRAM | DDR4 SDRAM |
| Speed | 5200 MHz | 3200 MHz |
| Rated Speed | 5200 MHz | 3200 MHz |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 1 |
| STORAGE | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe), Performance | 256 GB SSD M.2 2242 PCIe 4.0 x4 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Graphics Processor (GPU) | Intel Iris Xe Graphics | AMD Radeon Graphics |
|---|---|---|
| Max Monitors Supported | 3 external monitor(s) | 3 external monitor(s) |
| Camera | Yes - 1080p | Yes - 1080p |
| Camera Features | Privacy shutter, IR camera, fixed focus, MIPI, Computer Vision | Privacy shutter, fixed focus |
| Sound | Two tweeters, two woofers, quad array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3306 | Realtek ALC3287 |
| Compliant Standards | High Definition Audio, Dolby Atmos, Dolby Voice | High Definition Audio, Dolby Audio |
| COMMUNICATIONS | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Wireless | NFC, Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6E AX 211 | M.2 Card |
| Network Interface | - | Gigabit Ethernet |
| Features | Dual stream (2x2) | Wake-on-LAN (WOL), dual stream (2x2) |
| WWAN |
|---|
| Generation | 4G upgradable | - |
|---|
| BATTERY | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 57 Wh | 45 Wh |
| Battery Life | Up to 24.9 hours | Up to 8 hours |
| Battery Run Time | - | Local video (1080p) playback time (150 nits): up to 8 hours |
| AC ADAPTER | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls, glass touchpad, air intake key design | Spill-resistant, multi-touch touchpad, buttonless touchpad, precision touchpad |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Slots | 1 x Nano-SIM card (1 free) | 1 x M.2 (PCI Express 3.0 x4) (0 free) 1 x M.2 (PCI Express 3.0 x4) (1 free) |
|---|---|---|
| Interfaces | 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 |
2 x USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) USB 3.2 Gen 1 (Always On) USB 3.2 Gen 1 HDMI LAN Headphone/microphone combo jack |
| Memory Card Reader | - | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) |
| SOFTWARE | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Operating System (OS) | Windows 11 Pro - English | Windows 11 Pro - English |
|---|---|---|
| Software Included | Glance by Mirametrix, Intel Connectivity Performance Suite | Microsoft Office (Trial) |
| MISCELLANEOUS | Lenovo ThinkPad X1 Carbon Gen 10 (21CB) | Lenovo ThinkBook 15 G4 ABA (21DL) |
|---|
| Included Accessories | USB-C slim power adapter | USB-C slim wall mount power adapter |
|---|---|---|
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Firmware 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, NVMe password, USB FIDO (Fast Identity Online) device integration, Firmware Resiliency 3.0 | Administrator password, hard drive password, power-on password, MIL-STD-810H tested, Rapid Charge Pro |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified | RoHS, Energy-Related Products (ErP) Lot 6, TUV Rheinland Low Blue Light (Software Solution) |
| 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 - 3 years - pick-up and return Limited warranty - battery - 1 year Extended warranty - 3 years - on-site |
Limited warranty - 1 year - pick-up and return |
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