In depth comparison and review of Lenovo ThinkPad X13s Gen 1 (21BX) and Lenovo ThinkPad L15 Gen 3 (21C3). 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 X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 29.87 cm x 20.64 cm x 1.34 cm | 36.02 cm x 23.7 cm x 1.993 cm |
| Weight | 1.06 kg | 1.76 kg |
| Case Material | Glass-fibre reinforced plastic (bottom), magnesium-aluminium alloy (top) | Polycarbonate ABS (bottom), polycarbonate ABS (top) |
| Colour | Thunder black | Thunder black |
| DISPLAY | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Screen Size (Type) | 13.3" - IPS | 15.6" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1200 (WUXGA) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:10 | 16:9 |
| Image Brightness | 300 cd/m² | 250 cd/m² |
| Colour Gamut | 100% sRGB | 45% NTSC |
| Features | Anti-glare, 170° viewing angle | Anti-glare, 170° viewing angle |
| PROCESSOR | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| CPU | Qualcomm Snapdragon 8cx Gen 3 | Intel Core i5 (12th Gen) 1235U / 1.3 GHz |
|---|---|---|
| Max Turbo Speed | 3 GHz | 4.4 GHz |
| Number of Cores | 8-core | 10-core |
| Cache | L2 - 1 MB | 12 MB |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| RAM | 16 GB (provided memory is soldered) | 8 GB (2 x 4 GB) |
|---|---|---|
| Max RAM Supported | - | 64 GB |
| RAM Type | LPDDR4X SDRAM | DDR4 SDRAM |
| Speed | 4266 MHz | 3200 MHz |
| Rated Speed | 4266 MHz | 3200 MHz |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 2 |
| Empty Slots | - | 0 |
| STORAGE | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Graphics Processor (GPU) | Qualcomm Adreno 690 | Intel Iris Xe Graphics |
|---|---|---|
| Max Monitors Supported | 2 external monitor(s) | 3 external monitor(s) |
| Video System Features | - | Functions as Intel UHD graphics (for single-channel memory) |
| Camera | Yes | Yes - 1080p |
| Resolution | 5 Megapixel | - |
| Camera Features | IR camera, fixed focus, e-camera shutter, MIPI | Privacy shutter, IR camera, Windows Hello, fixed focus |
| Sound | Stereo speakers, 3-microphone array | Stereo speakers, dual array microphone |
| Codec | Qualcomm WCD9385 | Realtek ALC3287 |
| Compliant Standards | High Definition Audio, Dolby Audio | High Definition Audio, Dolby Audio, Dolby Voice |
| COMMUNICATIONS | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Wireless | 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 | Qualcomm WCN6855 Wi-Fi 6E | Intel Wi-Fi 6 AX 201 - M.2 Card |
| Network Interface | - | Gigabit Ethernet |
| Features | Dual stream (2x2) | Wake-on-LAN (WOL), dual stream (2x2) |
| WWAN |
|---|
| Generation | 5G | 4G upgradable |
|---|---|---|
| Controller | Qualcomm Snapdragon X55 - M.2 Card | - |
| BATTERY | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 49.5 Wh | 57 Wh |
| Battery Life | Up to 28 hours | - |
| AC ADAPTER | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| 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 |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Slots | 1 x Nano-SIM card (1 free) | - |
|---|---|---|
| Interfaces | 2 x USB-C 3.2 Gen 2 (supports DisplayPort 1.4a Alt Mode) (Power Delivery 3.0) Headphone/microphone combo jack |
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 |
| Memory Card Reader | - | Yes (microSD) |
| SOFTWARE | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Operating System (OS) | Windows 11 Pro (on ARM) - English | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence - English |
|---|
| MISCELLANEOUS | Lenovo ThinkPad X13s Gen 1 (21BX) | Lenovo ThinkPad L15 Gen 3 (21C3) |
|---|
| Included Accessories | USB-C power adapter | USB-C power adapter |
|---|---|---|
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip with Microsoft Pluton, fingerprint reader | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card 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, MIL-STD-810H tested, self-healing BIOS | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password |
| 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 - 3 years - pick-up and return Limited warranty - battery - 1 year Extended warranty - 1 year - on-site |
Base warranty - 1 year - pick-up and return Extended warranty - 1 year - on-site |
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