ASUS ROG Zephyrus G14 (2026) GU405 vs Lenovo Legion 5i
The ASUS ROG Zephyrus G14 (2026) GU405 is the better laptop on paper: it has more memory, is more compact and has more storage. Pick the Lenovo Legion 5i only if it matters to you that it has a bigger screen and has a smoother screen.
We earn a commission from qualifying Amazon purchases made through our links, at no extra cost to you. This never affects our specs. How we make money.
Key differences
- Memory ASUS ROG Zephyrus G14 (2026) GU405 wins
The ASUS ROG Zephyrus G14 (2026) GU405 has 32 GB of memory against 16 GB, so it has more room for big projects and heavy multitasking.
- Screen size Depends on you
The Lenovo Legion 5i has the bigger screen (15.1" against 14"), while the ASUS ROG Zephyrus G14 (2026) GU405 is more compact.
- Storage ASUS ROG Zephyrus G14 (2026) GU405 wins
The ASUS ROG Zephyrus G14 (2026) GU405 has twice the storage: 1 TB against 512 GB.
- Smoothness Lenovo Legion 5i wins
The Lenovo Legion 5i's 165 Hz screen is smoother than the ASUS ROG Zephyrus G14 (2026) GU405's 120 Hz one, which shows in fast games.
- Weight ASUS ROG Zephyrus G14 (2026) GU405 wins
The ASUS ROG Zephyrus G14 (2026) GU405 is 0.4 kg lighter: 1.5 kg against 1.9 kg.
Which one should you choose?
Choose the ASUS ROG Zephyrus G14 (2026) GU405 if…
- You keep lots of tabs and apps open: 32 GB of memory gives it more room.
- You want something compact for small bags and train tables: it has a 14-inch screen.
- You store lots of photos, videos or games: it has 1 TB of storage.
- You'll move it around the house or office: it's 0.4 kg lighter.
Choose the Lenovo Legion 5i if…
- You want more room to work: its 15.1-inch screen fits two windows side by side.
- You play fast games: its 165 Hz screen keeps motion smooth.
- You plug things in: it has Ethernet (for wired internet).
Full spec comparison
Add more laptopsThe ASUS ROG Zephyrus G14 (2026) GU405 leads on performance and battery and weight; elsewhere the two are closely matched. Highlighted values mark the better spec in each row, and you can hide the rows where they match.
Performance
Each laptop has its strengths on performance.
The ASUS ROG Zephyrus G14 (2026) GU405 has more memory and has more storage, while the Lenovo Legion 5i can be upgraded.
| Spec | ASUS ROG Zephyrus G14 (2026) GU405 | Lenovo Legion 5i |
|---|---|---|
| Processor | Intel Core Ultra 9 386H | Intel Core i7-14700HX |
| Graphics | NVIDIA GeForce RTX 5070 Laptop GPU | NVIDIA GeForce RTX 5060 Laptop |
| Graphics memory | 8 GB | 8 GB |
| Graphics power (TGP) | 115 W | 115 W |
| AI engine (NPU) | 50 TOPS | — |
| Memory (RAM) | 32 GB | 16 GB |
| Memory type | LPDDR5X-8533 | DDR5-5600 |
| Maximum memory | 32 GB | 32 GB |
| Memory upgrades | Soldered (not upgradeable) | Upgradeable (slots) |
| Storage | 1 TB | 512 GB |
| Storage type | SSD | SSD |
| Storage interface | PCIe 4.0 NVMe M.2 | PCIe 4.0 x4 NVMe M.2 2242 |
| Storage slots | 1 | 2 |
Screen
Each laptop has its strengths on the screen.
The Lenovo Legion 5i has the bigger screen (15.1" against 14"), while the ASUS ROG Zephyrus G14 (2026) GU405 is more compact. The ASUS ROG Zephyrus G14 (2026) GU405 is more compact, has a sharper screen and has a brighter screen, while the Lenovo Legion 5i has a bigger screen and has a smoother screen.
| Spec | ASUS ROG Zephyrus G14 (2026) GU405 | Lenovo Legion 5i |
|---|---|---|
| Screen size | 14" | 15.1" |
| Resolution | 3K (2880 x 1800) | 2.5K (2560 x 1600) |
| Aspect ratio | 16:10 | 16:10 |
| Panel | OLED | OLED |
| Refresh rate | 120 Hz | 165 Hz |
| Variable refresh (VRR) | Yes | — |
| Brightness | 1,100 nits | 500 nits |
| Colour range | 100% DCI-P3 | 100% DCI-P3 |
| HDR | VESA DisplayHDR True Black 1000 | VESA DisplayHDR True Black 600, Dolby Vision |
| Finish | Anti-reflective | Glossy |
| Touchscreen | No | No |
Battery and size
Each laptop has its strengths on battery and weight.
The ASUS ROG Zephyrus G14 (2026) GU405 is lighter and is slimmer, while the Lenovo Legion 5i charges over USB-C.
| Spec | ASUS ROG Zephyrus G14 (2026) GU405 | Lenovo Legion 5i |
|---|---|---|
| Battery life (maker claim) | Up to 20 hours | Up to 9 hours |
| Battery capacity | 73 Wh | 80 Wh |
| Charger | 250 W | 245 W |
| Charges via | barrel | Slim-tip (rectangle) barrel; USB-C PD also charges |
| Fast charging | 0-50% in 30 minutes | 0-30% in 10 min, 0-70% in 30 min, 0-100% in 80 min |
| Weight | 1.5 kg | 1.9 kg |
| Dimensions | 311 x 220 x 15.9-16.3 mm | 344.9 x 255.35 x 19.95-21.54 mm |
| Materials | CNC-machined aluminium alloy | Aluminium (top), PC-ABS + 15% Talc (bottom) |
| Colour | Gray | Eclipse Black |
| Colours available | Eclipse Gray, Platinum White | Eclipse Black |
Ports and wireless
On ports and wireless, it comes down to what you need.
The ASUS ROG Zephyrus G14 (2026) GU405 has Thunderbolt or USB4 and an SD card reader, while the Lenovo Legion 5i has Ethernet.
| Spec | ASUS ROG Zephyrus G14 (2026) GU405 | Lenovo Legion 5i |
|---|---|---|
| Ports | 1x Thunderbolt 4 (DisplayPort, power delivery/charging, 40Gbps), 1x USB-C 3.2 Gen 2 (DisplayPort, power delivery/charging), 2x USB-A 3.2 Gen 2 (10Gbps), 1x HDMI 2.1 FRL, 1x SD card reader (UHS-II), 1x 3.5 mm combo audio | 3x USB-A 3.2 Gen 1 (5Gbps; 1 always-on), 1x USB-C 3.2 Gen 2 (10Gbps, charging USB PD 95-100W, DisplayPort 2.1), 1x USB-C 3.2 Gen 2 (10Gbps, DisplayPort 1.4), 1x HDMI 2.1, 1x Ethernet RJ-45, 1x 3.5 mm headphone/mic combo |
| Thunderbolt / USB4 | Thunderbolt 4 | None |
| External displays (max) | — | 3 |
| Card reader | SD (UHS-II, 312MB/s) | None |
| Ethernet | None | 1 GbE RJ-45 |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | Bluetooth 6.0 | Bluetooth 5.4 |
| Mobile data | None | None |
Features
The Lenovo Legion 5i is ahead on extras.
The ASUS ROG Zephyrus G14 (2026) GU405 has Copilot+ AI features, while the Lenovo Legion 5i has a number pad and has a sharper webcam.
| Spec | ASUS ROG Zephyrus G14 (2026) GU405 | Lenovo Legion 5i |
|---|---|---|
| Webcam | 1080p + IR | 5MP |
| Webcam privacy | — | E-shutter (electronic kill switch) |
| Backlit keyboard | Yes | Yes |
| Keyboard | Backlit chiclet single-zone RGB, Copilot key, 1.7 mm travel, N-key rollover, anti-shine keycap coating | 24-zone RGB backlight, 1.6 mm key travel, numeric keypad, Copilot key |
| Login | Face | — |
| Number pad | No | Yes |
| Touchpad | Extra-large touchpad | Buttonless Mylar multi-touch, 75 x 120 mm, Precision |
| Speakers | 4-speaker system (dual-force woofers, 2 tweeters), Smart Amp, Dolby Atmos | 2x 2 W, HARMAN, Nahimic Audio |
| Microphones | Built-in array microphone, AI noise-canceling | dual-array |
| Pen | No | No |
| Security | Secured-core PC (Level 3), Microsoft Pluton security processor, BIOS administrator and user password protection | Firmware TPM 2.0, E-shutter, BIOS power-on/supervisor/HDD passwords, Self-healing BIOS |
Software and model
The ASUS ROG Zephyrus G14 (2026) GU405 is ahead on software and updates.
It is newer, and the Lenovo Legion 5i doesn't beat it on anything here.
| Spec | ASUS ROG Zephyrus G14 (2026) GU405 | Lenovo Legion 5i |
|---|---|---|
| Operating system | Windows 11 Home | Windows 11 Home |
| Update promise | — | None |
| Model number | GU405AP-SY004W | 83LY000LUS |
| Released | 2026 | 2025 |