In depth comparison and review of Lenovo ThinkPad X240 (20AM) and Lenovo ThinkPad X13 Gen 4 (21EX). 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 X13 Gen 4 (21EX) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard comfort
impressive security features
good battery life
portable design
average display brightness
limited graphics performance
noisy under load
higher price point
| DESIGN AND DIMENSIONS | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 30.55 cm x 20.85 cm x 1.99 cm | 30.17 cm x 21.48 cm x 1.595 cm |
| Weight | 1.47 kg | 1.09 kg |
| Case Material | Glass-fibre reinforced plastic | Aluminium (bottom), carbon fibre hybrid (top) |
| Colour | - | Deep black |
| DISPLAY | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Screen Size (Type) | 12.5" | 13.3" - IPS |
|---|---|---|
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1366 x 768 (HD) | 1920 x 1200 (WUXGA) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:10 |
| Image Brightness | - | 300 cd/m² |
| Colour Gamut | - | 100% sRGB |
| Features | Anti-glare | Anti-glare |
| PROCESSOR | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| CPU | Intel Core i3 (4th Gen) 4010U / 1.7 GHz | Intel Core i5 (13th Gen) 1335U / 1.3 GHz |
|---|---|---|
| Max Turbo Speed | - | 4.6 GHz |
| Number of Cores | Dual-Core | 10-core |
| Cache | 3 MB | 12 MB |
| 64-bit Computing | Yes | - |
| Platform Technology | - | Intel Evo |
| Features | Integrated memory controller | Integrated memory controller |
| MEMORY | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| RAM | 2 GB (1 x 2 GB) | 16 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 8 GB | - |
| RAM Type | DDR3L SDRAM | LPDDR5 SDRAM |
| Speed | 1600 MHz / PC3L-12800 | 4800 MHz |
| Rated Speed | 1600 MHz | 6400 MHz |
| Form Factor | SO-DIMM 204-pin | - |
| Slots Qty | 1 | - |
| Empty Slots | 0 | - |
| STORAGE | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Main Storage Size (HDD/SSD) | 500 GB HDD SATA 6Gb/s / 7200 rpm | 256 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Graphics Processor (GPU) | Intel HD Graphics 4400 | Intel Iris Xe Graphics |
|---|---|---|
| Max Monitors Supported | - | 3 external monitor(s) |
| Video System Features | - | Functions as Intel UHD graphics (for single-channel memory) |
| Camera | Yes - 720p | Yes - 1080p |
| Camera Features | Face tracking | Privacy shutter, fixed focus |
| Sound | Stereo speakers, two microphones | Stereo speakers, dual array microphone |
| Codec | Realtek ALC3232 | Realtek ALC3287 |
| Compliant Standards | High Definition Audio, Dolby Advanced Audio v2 | High Definition Audio, Dolby Audio |
| Audio Features | - | Input: Dolby Voice, 360° far-field |
| COMMUNICATIONS | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Wireless | 802.11b/g/n, Bluetooth 4.0 | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | M.2 Card | Intel Wi-Fi 6E AX 211 |
| Network Interface | Gigabit Ethernet | - |
| Ethernet Controller | Intel I218-V | - |
| Features | - | Dual stream (2x2) |
| WWAN |
|---|
| Generation | WWAN | 4G upgradable |
|---|
| BATTERY | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Technology | 6-cell Lithium Ion | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 47 Wh | 54.7 Wh |
| AC ADAPTER | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt | 65 Watt |
| INPUT | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Keyboard Backlight | - | Yes |
| Features | Spill-resistant, multi-touch touchpad | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Interfaces | 2 x USB 3.0 VGA Mini DisplayPort LAN Dock Headphone/microphone combo jack |
USB 3.2 Gen 1 (Always On) USB 3.2 Gen 1 2 x USB4 (supports Thunderbolt 4, DisplayPort 2.0 Alt Mode) (Power Delivery 3.0) HDMI 2.1 (4K support) Headphone/microphone combo jack |
|---|---|---|
| Memory Card Reader | 4 in 1 (SD Card, MultiMediaCard, SDHC Card, SDXC Card) | - |
| SOFTWARE | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Operating System (OS) | Microsoft Windows 7 Professional 64-bit Edition - French | Windows 11 Pro - English |
|---|---|---|
| Software Included | - | Glance by Mirametrix, Intel Connectivity Performance Suite |
| MISCELLANEOUS | Lenovo ThinkPad X240 (20AM) | Lenovo ThinkPad X13 Gen 4 (21EX) |
|---|
| Dockable | Yes | - |
|---|---|---|
| Included Accessories | Power adapter | USB-C slim power adapter |
| Security | Trusted Platform Module (TPM 1.2) Security Chip | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader |
| Security Slot Type | Kensington 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, hard drive password, power-on password, ThinkVantage Active Protection System, 1 USB 3.0 (Always On), MIL-STD-810G tested | 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, GREENGUARD | RoHS, Energy-using Products (EuP) Lot 6, TCG Certified, Energy-Related Products (ErP) Lot 26, TCO Certified 9.0 |
| ENERGY STAR Certified | Yes | - |
| Max Operating Temperature | - | 35 °C |
| Min Operating Temperature | - | 5 °C |
| Humidity Range Operating | - | 8 - 95% |
| Manufacturer Warranty | Limited warranty - 1 year - pick-up and return | 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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