In depth comparison and review of Lenovo ThinkPad Z13 Gen 1 (21D3) and ASUS X515JA (EJ3921W). 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 Z13 Gen 1 (21D3) based on its technical characteristics, features, user experience, expert reviews and price level.
excellent build quality
powerful amd processor
bright oled display
eco-friendly materials
solid security features
higher price point
limited port selection
no dedicated gpu
average battery life
Advantages and disadvantages of ASUS X515JA (EJ3921W) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
lightweight design
adequate performance
good connectivity options
average battery life
modest display resolution
limited upgrade options
integrated graphics only
| DESIGN AND DIMENSIONS | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 29.44 cm x 19.96 cm x 1.399 cm | 36.02 cm x 23.49 cm x 1.99 cm |
| Weight | 1.26 kg | 1.8 kg |
| Case Material | Aluminium (top), aluminium (bottom) | Plastic |
| Colour | Black (bottom), arctic grey (top) | Slate grey |
| DISPLAY | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Screen Size (Type) | 13.3" OLED | 15.6" |
|---|---|---|
| Touchscreen | Yes (10-point multi-touch) | - |
| Screen Resolution | 2880 x 1800 (2.8K) | 1920 x 1080 (Full HD) |
| V-Sync Rate at Max Res. | - | 60 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:10 | 16:9 |
| Image Brightness | 500 cd/m² | 200 cd/m² |
| Colour Gamut | 100% DCI-P3 | 45% NTSC |
| Features | Anti-reflective, One Glass Solution, anti-smudge, on-cell touch technology, Low Blue Light technology, Dolby Vision, 91.6% screen-to-body ratio | Anti-glare, 83% screen-to-body ratio |
| PROCESSOR | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| CPU | AMD Ryzen 7 Pro 6850U / 2.7 GHz | Intel Core i5 (10th Gen) 1035G1 / 1 GHz |
|---|---|---|
| Max Turbo Speed | 4.7 GHz | 3.6 GHz |
| Number of Cores | 8-core | Quad-Core |
| Cache | L3 - 16 MB | 6 MB |
| Features | Integrated memory controller | Intel Smart Cache |
| MEMORY | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| RAM | 32 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | - | 16 GB |
| RAM Type | LPDDR5 SDRAM | DDR4 SDRAM |
| Speed | 6400 MHz | - |
| Rated Speed | 6400 MHz | - |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 1 |
| STORAGE | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption - Union Memory | 512 GB SSD M.2 PCIe 3.0 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Graphics Processor (GPU) | AMD Radeon 680M | Intel UHD Graphics |
|---|---|---|
| Max Monitors Supported | 2 external monitor(s) | - |
| Camera | Yes - 1080p | Yes - VGA |
| Camera Features | Windows Hello, fixed focus, e-camera shutter, Discrete IR | - |
| Sound | Stereo speakers, dual array microphone | Speakers, microphone |
| Codec | Realtek ALC3306 | - |
| Compliant Standards | High Definition Audio, Dolby Atmos | - |
| Audio Features | Input: Dolby Voice, 360° far-field | Output: ASUS SonicMaster |
| COMMUNICATIONS | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Wireless | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Wireless Controller | Qualcomm NFA725A | - |
| Network Interface | Gigabit Ethernet | - |
| Features | - | Single stream (1x1) |
| BATTERY | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Technology | 3-cell lithium polymer | 2-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 51.5 Wh | 37 Wh |
| AC ADAPTER | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt | 45 Watt, 19 V, 2.37 A |
| INPUT | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Type | Keyboard, TrackPoint, UltraNav | Keyboard, touchpad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | - |
| Features | Spill-resistant, multi-touch touchpad, edge-to-edge backlit keyboard, Fn keys with Unified Communications controls, glass touchpad, Haptic ForcePad | Chiclet keyboard, 1.4mm travel distance |
| CONNECTIONS & EXPANSIONS | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Interfaces | 2 x USB4 (supports DisplayPort 1.4a Alt Mode) (Power Delivery 3.0) Headphone/microphone combo jack LAN (on supplied adapter) |
Headphone/microphone combo jack USB 3.2 Gen 1 2 x USB 2.0 HDMI USB-C 3.2 Gen 1 |
|---|
| SOFTWARE | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Operating System (OS) | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence | Windows 11 Home in S mode |
|---|
| MISCELLANEOUS | Lenovo ThinkPad Z13 Gen 1 (21D3) | ASUS X515JA (EJ3921W) |
|---|
| Included Accessories | USB-C power adapter, Lenovo USB-C to Ethernet Adapter | Power adapter |
|---|---|---|
| Security | Discrete Trusted Platform Module (TPM 2.0) Security Chip with Microsoft Pluton, fingerprint reader | Firmware Trusted Platform Module (TPM) solution |
| Security Slot Type | - | Kensington security slot |
| Theft/Intrusion Protection | - | Security lock slot (cable lock sold separately) |
| Features | Administrator password, system password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password, certificate based BIOS authentication, FIDO (Fast Identity Online) authentication | System password |
| Compliant Standards | RoHS, TUV Rheinland Low Blue Light Certification, Energy-Related Products (ErP) Lot 3, TCO Certified 9.0 | - |
| Carbon Footprint | 216 kg carbon emissions (EU) | - |
| Max Operating Temperature | 35 °C | - |
| Min Operating Temperature | 5 °C | - |
| Humidity Range Operating | 8 - 95% | - |
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