ASUS ZenBook 14 (UX425JA) vs. Lenovo ThinkPad X13 Gen 4 (21EX)

Laptop Comparison, Reviews and Tests

Side by side comparison and review of ASUS ZenBook 14 (UX425JA) and Lenovo ThinkPad X13 Gen 4 (21EX). Compare dimensions, processors, batteries, storage capacities and other key specifications and features to simplify the choice of your perfect laptop. Our goal is to make it easier for you to decide on the laptop that will best meet your expectations by revealing the main differences between the products.

ASUS ZenBook 14 (UX425JA) Review

Advantages and disadvantages of ASUS ZenBook 14 (UX425JA) based on its technical characteristics, features, user experience, expert reviews and price level.

lightweight and portable

excellent battery life

fast ssd storage

comfortable keyboard

sharp display

average sound quality

no dedicated gpu

fewer port options

limited upgradeability

Lenovo ThinkPad X13 Gen 4 (21EX) Review

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

Laptop Comparison and Tests

Difference between ASUS ZenBook 14 (UX425JA) and Lenovo ThinkPad X13 Gen 4 (21EX)
81 % - Design
86 % - Display
75 % - Performance
85 % - Connectivity
85 % - Battery
86 % - Design
84 % - Display
85 % - Performance
85 % - Connectivity
85 % - Battery

Laptop Specifications Comparison

ASUS ZenBook 14 (UX425JA) vs. Lenovo ThinkPad X13 Gen 4 (21EX) Comparison Chart
DESIGN AND DIMENSIONS ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Product Type Notebook Notebook
Dimensions (WxDxH) 31.9 cm x 20.8 cm x 1.39 cm 30.17 cm x 21.48 cm x 1.595 cm
Weight 1.17 kg 1.09 kg
Case Material Aluminum Aluminium (bottom), carbon fibre hybrid (top)
Colour Pine grey Deep black
DISPLAY ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Screen Size (Type) 14" 13.3" - IPS
LCD Backlight Technology LED backlight -
Screen Resolution 1920 x 1080 (Full HD) 1920 x 1200 (WUXGA)
Widescreen Yes Yes
Image Aspect Ratio 16:9 16:10
Image Brightness 300 cd/m² 300 cd/m²
Colour Gamut 100% sRGB 100% sRGB
Features ASUS Splendid Video Intelligence Technology, anti-glare, WideView, NanoEdge display Anti-glare
PROCESSOR ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
CPU Intel Core i5 (10th Gen) 1035G1 / 1 GHz Intel Core i5 (13th Gen) 1335U / 1.3 GHz
Max Turbo Speed 3.6 GHz 4.6 GHz
Number of Cores Quad-Core 10-core
Cache 6 MB 12 MB
64-bit Computing Yes -
Platform Technology - Intel Evo
Features Intel Turbo Boost Technology 2.0, Intel Smart Cache Integrated memory controller
MEMORY ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
RAM 8 GB (provided memory is soldered) 16 GB (provided memory is soldered)
RAM Type LPDDR4X SDRAM LPDDR5 SDRAM
Speed 3200 MHz 4800 MHz
Rated Speed - 6400 MHz
STORAGE ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Main Storage Size (HDD/SSD) 32 GB SSD M.2 PCIe - 3D Xpoint (Optane) - Intel 256 GB SSD M.2 2280 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe)
Secondary Storage 512 GB SSD - (M.2) - PCIe NVM Express (NVMe) -
AUDIO & VIDEO ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Graphics Processor (GPU) Intel UHD Graphics 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 - HD Yes - 1080p
Camera Features IR camera, Windows Hello Privacy shutter, fixed focus
Sound Harman/kardon stereo speakers, array microphone Stereo speakers, dual array microphone
Codec - Realtek ALC3287
Compliant Standards - High Definition Audio, Dolby Audio
Audio Features ASUS SonicMaster, Smart Amp Input: Dolby Voice, 360° far-field
COMMUNICATIONS ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Wireless Bluetooth 5.0, 802.11a/b/g/n/ac/ax Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E)
Wireless Controller - Intel Wi-Fi 6E AX 211
Features Dual stream (2x2) Dual stream (2x2)
WWAN
Generation - 4G upgradable
BATTERY ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Technology 4-cell lithium polymer Lithium polymer
Battery Capacity (Size) 67 Wh 54.7 Wh
Battery Life Up to 22 hours -
AC ADAPTER ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Input AC 120/230 V (50/60 Hz) AC 100-240 V (50/60 Hz)
Output 65 Watt, 19 V, 3.42 A 65 Watt
INPUT ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Type Keyboard, touchpad, NumberPad Keyboard, TrackPoint, UltraNav
Keyboard Backlight Yes Yes
Features Chiclet keyboard Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls
CONNECTIONS & EXPANSIONS ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Interfaces 2 x USB-C (supports Thunderbolt 3, DisplayPort Alt Mode) (Power Delivery)
USB 3.2 Gen 1
HDMI
Headphone/microphone combo jack (on supplied cable)
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 Yes (microSD) -
SOFTWARE ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Operating System (OS) Windows 10 Home Windows 11 Pro - English
Software Included ASUS Splendid, Microsoft 365 (30 days trial), MyASUS, System Diagnosis, Battery Health Charging, AppDeals Glance by Mirametrix, Intel Connectivity Performance Suite
MISCELLANEOUS ASUS ZenBook 14 (UX425JA) Lenovo ThinkPad X13 Gen 4 (21EX)
Included Accessories USB-C power adapter, USB-C to audio jack adapter USB-C slim power adapter
Security Firmware Trusted Platform Module (TPM) Security Chip Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader
Security Slot Type - Kensington nano security slot
Theft/Intrusion Protection - Security lock slot (cable lock sold separately)
Features MIL-STD-810G tested, ErgoLift 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-using Products (EuP) Lot 6, TCG Certified, Energy-Related Products (ErP) Lot 26, TCO Certified 9.0
SAR Value 0.228 W/kg (body), 0.228 W/kg (limb) -
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 BM191T -
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