In depth comparison and review of Lenovo ThinkPad X13 Gen 4 (21EX) and ASUS BR1402C (i381XA). 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
Advantages and disadvantages of ASUS BR1402C (i381XA) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
compact design
solid build quality
efficient multitasking
decent battery life
average display quality
limited storage capacity
no backlit keyboard
basic graphics card
| DESIGN AND DIMENSIONS | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 30.17 cm x 21.48 cm x 1.595 cm | 33.29 cm x 22.89 cm x 2.1 cm |
| Weight | 1.09 kg | 1.56 kg |
| Case Material | Aluminium (bottom), carbon fibre hybrid (top) | Plastic |
| Colour | Deep black | Mineral grey |
| DISPLAY | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Screen Size (Type) | 13.3" - IPS | 14" |
|---|---|---|
| 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 | Anti-glare |
| PROCESSOR | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| CPU | Intel Core i5 (13th Gen) 1335U / 1.3 GHz | Intel Core i3 N305 |
|---|---|---|
| Max Turbo Speed | 4.6 GHz | 3.8 GHz |
| Number of Cores | 10-core | 8-core |
| Cache | 12 MB | 6 MB |
| Platform Technology | Intel Evo | - |
| Features | Integrated memory controller | - |
| MEMORY | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| RAM | 16 GB (provided memory is soldered) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | - | 16 GB |
| RAM Type | LPDDR5 SDRAM | DDR4 SDRAM |
| Speed | 4800 MHz | - |
| Rated Speed | 6400 MHz | - |
| Form Factor | - | SO-DIMM 262-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 0 |
| STORAGE | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) | 128 GB |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Graphics Processor (GPU) | Intel Iris Xe Graphics | Intel UHD Graphics |
|---|---|---|
| Max Monitors Supported | 3 external monitor(s) | - |
| Video System Features | Functions as Intel UHD graphics (for single-channel memory) | - |
| Camera | Yes - 1080p | Yes - 720p |
| Camera Features | Privacy shutter, fixed focus | Privacy shutter |
| Sound | Stereo speakers, dual array microphone | Dual speakers, microphone |
| Codec | Realtek ALC3287 | - |
| Compliant Standards | High Definition Audio, Dolby Audio | - |
| Audio Features | Input: Dolby Voice, 360° far-field | Output: Audio by Dirac |
| COMMUNICATIONS | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Wireless | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | 802.11a/b/g/n/ac/ax, Bluetooth 5.3 |
|---|---|---|
| Wireless Controller | Intel Wi-Fi 6E AX 211 | - |
| Features | Dual stream (2x2) | Dual stream (2x2) |
| WWAN |
|---|
| Generation | 4G upgradable | - |
|---|
| BATTERY | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Technology | Lithium polymer | 3-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 54.7 Wh | 50 Wh |
| AC ADAPTER | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 65 Watt, 20 V, 2.25 A |
| INPUT | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Keyboard Backlight | Yes | - |
| Features | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls | Spill-resistant, chiclet keyboard, 1.5mm travel distance |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Interfaces | 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 |
HDMI USB 2.0 2 x USB 3.2 Gen 1 USB-C 3.2 Gen 1 (Power Delivery) Headphone/microphone combo jack |
|---|
| SOFTWARE | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Operating System (OS) | Windows 11 Pro - English | Windows 11 Pro Education |
|---|---|---|
| Software Included | Glance by Mirametrix, Intel Connectivity Performance Suite | MyASUS, Microsoft 365 (1 month trial) |
| MISCELLANEOUS | Lenovo ThinkPad X13 Gen 4 (21EX) | ASUS BR1402C (i381XA) |
|---|
| Included Accessories | USB-C slim power adapter | USB-C power adapter |
|---|---|---|
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader |
| Security Slot Type | Kensington nano security slot | Kensington 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, Firmware Resiliency 3.0, certificate based BIOS authentication, FIDO (Fast Identity Online) authentication | System password, LED indicator, rubber bumper, MIL-STD-810H tested |
| Compliant Standards | RoHS, Energy-using Products (EuP) Lot 6, TCG Certified, Energy-Related Products (ErP) Lot 26, TCO Certified 9.0 | RoHS, REACH |
| Max Operating Temperature | 35 °C | - |
| Min Operating Temperature | 5 °C | - |
| Humidity Range Operating | 8 - 95% | - |
| Manufacturer Warranty | Base warranty - 3 years - pick-up and return Base warranty - battery - 1 year Extended warranty - 1 year - on-site - response time: next business day |
- |
| Model Number | - | 3Y |
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