In depth comparison and review of Lenovo ThinkPad X1 Extreme Gen 5 (21DE) and Lenovo ThinkPad T14s Gen 4 (21F6). 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 X1 Extreme Gen 5 (21DE) based on its technical characteristics, features, user experience, expert reviews and price level.
powerful intel processors
robust build quality
excellent 4k display
advanced security features
wide connectivity options
high price point
heavier than competitors
average battery life
loud under load
Advantages and disadvantages of Lenovo ThinkPad T14s Gen 4 (21F6) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard feel
impressive battery life
efficient thermal management
good security features
average display brightness
limited graphics performance
no HDMI port
higher price point
| DESIGN AND DIMENSIONS | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 35.95 cm x 25.38 cm x 1.79 cm | 31.75 cm x 22.69 cm x 1.69 cm |
| Weight | 1.88 kg | 1.25 kg |
| Case Material | Aluminium (bottom), carbon fibre (top) | Aluminium (bottom), carbon fibre hybrid (top) |
| Colour | Black paint | Deep black |
| DISPLAY | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Screen Size (Type) | 16" - IPS | 14" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 2560 x 1600 (WQXGA) | 1920 x 1200 (WUXGA) |
| V-Sync Rate at Max Res. | 165 Hz | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:10 | 16:10 |
| Image Brightness | 500 cd/m² | 400 cd/m² |
| Colour Gamut | 100% sRGB | 100% sRGB |
| Features | Anti-glare, 178° viewing angle, Low Blue Light technology, X-Rite Pantone factory color calibration | Anti-glare, Low Power, Eyesafe technology |
| PROCESSOR | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| CPU | Intel Core i7 (12th Gen) 12700H / 2.3 GHz | Intel Core i5 (13th Gen) 1335U / 1.3 GHz |
|---|---|---|
| Max Turbo Speed | 4.7 GHz | 4.6 GHz |
| Number of Cores | 14-core | 10-core |
| Cache | 24 MB | 12 MB |
| Platform Technology | - | Intel Evo |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| RAM | 16 GB (1 x 16 GB) | 16 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 64 GB | - |
| RAM Type | DDR5 SDRAM | LPDDR5X SDRAM |
| Speed | 4800 MHz | 4800 MHz |
| Rated Speed | 4800 MHz | 6400 MHz |
| Form Factor | SO-DIMM 262-pin | - |
| Slots Qty | 2 | - |
| Empty Slots | 1 | - |
| STORAGE | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| 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 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe), Performance |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Multi-GPU Configuration | 1 single GPU card / integrated GPU | - |
|---|---|---|
| Graphics Processor (GPU) | NVIDIA GeForce RTX 3050 Ti / Intel Iris Xe Graphics | Intel Iris Xe Graphics |
| Max Monitors Supported | 4 external monitor(s) | 3 external monitor(s) |
| Video Memory | 4 GB GDDR6 SDRAM | - |
| Video System Features | - | Functions as Intel UHD graphics (for single-channel memory) |
| Camera | Yes - 1080p | Yes |
| Resolution | - | 5 Megapixel |
| Camera Features | Privacy shutter, IR camera, Windows Hello, fixed focus | Privacy shutter, Windows Hello, fixed focus, Discrete IR, Ultrasonic Human Presence Detection |
| Sound | Stereo speakers, dual array microphone | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3306 | Realtek ALC3287 |
| Compliant Standards | High Definition Audio, Dolby Audio Premium, Dolby Voice | High Definition Audio, Dolby Audio |
| Audio Features | - | Input: Dolby Voice, 360° far-field |
| COMMUNICATIONS | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Wireless | NFC, Bluetooth 5.2, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6E AX 211 | Intel Wi-Fi 6E AX 211 |
| Features | Dual stream (2x2) | Dual stream (2x2) |
| WWAN |
|---|
| Generation | - | 4G upgradable |
|---|
| BATTERY | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 90 Wh | 57 Wh |
| AC ADAPTER | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 170 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Keyboard Backlight | Yes | Yes |
| Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls, glass touchpad | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Slots | 2 x M.2 (PCI Express 4.0 x4) (1 free) | - |
|---|---|---|
| Interfaces | USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) 2 x USB4 (supports Thunderbolt 4, DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) HDMI Headphone/microphone combo jack |
USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) 2 x USB4 (supports Thunderbolt 4, DisplayPort 2.0 Alt Mode) (Power Delivery 3.0) HDMI (4K support) Headphone/microphone combo jack |
| Memory Card Reader | Yes (SD Express Card) | - |
| SOFTWARE | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence - German | Windows 11 Pro - English |
|---|---|---|
| Software Included | Glance by Mirametrix | Glance by Mirametrix, Intel Connectivity Performance Suite |
| MISCELLANEOUS | Lenovo ThinkPad X1 Extreme Gen 5 (21DE) | Lenovo ThinkPad T14s Gen 4 (21F6) |
|---|
| Included Accessories | Power adapter | USB-C slim power adapter |
|---|---|---|
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, 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, system password, power-on password, RapidCharge, MIL-STD-810H tested, NVMe password, USB FIDO (Fast Identity Online) device integration, Firmware Resiliency 3.0, certificate based BIOS authentication | Administrator password, system password, power-on password, RapidCharge, MIL-STD-810H tested, NVMe password, Firmware Resiliency 3.0, certificate based BIOS authentication, FIDO (Fast Identity Online) authentication |
| Compliant Standards | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified, TÜV Rheinland Low Blue Light Method 2 | RoHS, Energy-Related Products (ErP) Lot 6, TCG Certified, Energy-Related Products (ErP) Lot 26, TCO Certified 9.0 |
| ENERGY STAR Certified | Yes | - |
| EPEAT Compliant | EPEAT Gold | - |
| TCO Certified | TCO Certified Notebooks 9 | - |
| 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 Base warranty - battery - 1 year Extended warranty - 3 years - on-site |
Base warranty - 3 years - pick-up and return Base warranty - battery - 1 year Extended warranty - 1 year - on-site - response time: next business day |
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