Asus ROG Zephyrus G16 GU605 RTX 5090 (2025) vs MSI Stealth 16 AI+ B3 RTX 5080 (2026)
What ROG Zephyrus G16 GU605 RTX 5090 (2025) does better (18) and where Stealth 16 AI+ B3 RTX 5080 (2026) wins (5) — every spec side by side.
vs
9.5Graphics9.5
9.4Overall performance9.4
9.5Display9.0
5.0Memory & storage5.0
9.0Battery & portability5.0
9.0Features & cooling6.1
Dimensions
Size comparison
ROG Zephyrus G16 GU605 RTX 5090 (2025)Stealth 16 AI+ B3 RTX 5080 (2026)
| ROG Zephyrus G16 GU605 RTX 5090 (2025) | Stealth 16 AI+ B3 RTX 5080 (2026) | Difference | |
|---|---|---|---|
| Depth | 246 mm | 246 mm | = |
| Width | 354 mm | 354 mm | = |
| Thickness | 17 mm | 20 mm | −3 mm |
| Weight | 2 kg | 2 kg | = |
Drawn to the same scale from the official dimensions (front and side).
Why is ROG Zephyrus G16 GU605 RTX 5090 (2025) better than Stealth 16 AI+ B3 RTX 5080 (2026)?
- SSD (up to)2,000 GB vs 1,000 GB2×
- GPU compute (FP32)37.9 TFLOPS vs 32 TFLOPS+18%
- 3DMark Steel Nomad Light24,671 vs 21,645+14%
- Video memory24 GB vs 16 GB+50%
- GPU shader cores10,496 vs 7,680+37%
- Weight1.95 kg vs 1.99 kg+2%
- G-Sync / FreeSyncYes · Stealth 16 AI+ B3 RTX 5080 (2026): No
- HDRYes · Stealth 16 AI+ B3 RTX 5080 (2026): No
- RAM typeLPDDR5X vs DDR5
- SSD (base)2,000 GB vs 1,000 GB2×
- Vapor chamber coolingYes · Stealth 16 AI+ B3 RTX 5080 (2026): No
- Liquid metal (CPU)Yes · Stealth 16 AI+ B3 RTX 5080 (2026): No
Why is Stealth 16 AI+ B3 RTX 5080 (2026) better than ROG Zephyrus G16 GU605 RTX 5090 (2025)?
- GPU power (TGP)120 W vs 125 W+4%
- Upgradable RAMNo · ROG Zephyrus G16 GU605 RTX 5090 (2025): Yes
- Brightness500 nits vs 600 nits+20%
- Fan noise (max. load)68 dB vs 56.7 dB+20%
- Bluetooth5.4 vs 6+11%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5090 Laptop | GeForce RTX 5080 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 120 W | 125 W |
| Video memory | 24 GB | 16 GB |
| Video memory type | GDDR7 | GDDR7 |
| GPU shader cores | 10,496 | 7,680 |
| GPU compute (FP32) | 37.9 TFLOPS | 32 TFLOPS |
| 3DMark Steel Nomad Light | 24,671 | 21,645 |
| Processor | ||
| Processor | Core Ultra 9 285H | Core Ultra 9 386H |
| CPU maker | Intel | Intel |
| CPU cores | 16 | 16 |
| CPU threads | — | 16 |
| Max CPU clock | 5.4 GHz | 4.9 GHz |
| Processor options | Core i7-14650HX, Core Ultra 9 285H | Core Ultra 9 386H |
| Geekbench 6 multi-core | — | 16,973 |
| Geekbench 6 single-core | — | 2,859 |
| Cinebench 2024 multi-core | — | 1,247 |
| Display | ||
| Screen size | 16″ | 16″ |
| Resolution | 2560 × 1600 | 2560 × 1600 |
| Resolution class | QHD (1440p/1600p) | QHD (1440p/1600p) |
| Refresh rate | 240 Hz | 240 Hz |
| Panel type | OLED | OLED |
| Brightness | 500 nits | 600 nits |
| sRGB coverage | 100% | 100% |
| Response time | 1 ms | 1 ms |
| DCI-P3 coverage | 100% | 100% |
| Pixel density | 189 ppi | 189 ppi |
| Aspect ratio | 16:10 | 16:10 |
| G-Sync / FreeSync | Yes | No |
| Advanced Optimus | No | No |
| MUX switch | Yes | Yes |
| HDR | Yes | No |
| Touchscreen | No | No |
| Memory & storage | ||
| RAM (up to) | 32 GB | 32 GB |
| RAM (base) | 32 GB | 32 GB |
| RAM type | LPDDR5X | DDR5 |
| RAM speed | 7,467 MHz | 7,200 MHz |
| Max. supported RAM | — | 128 GB |
| RAM slots | — | 2 |
| Upgradable RAM | No | Yes |
| SSD (up to) | 2,000 GB | 1,000 GB |
| SSD (base) | 2,000 GB | 1,000 GB |
| M.2 SSD slots | 2 | 2 |
| SSD interface | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Battery & power | ||
| Battery capacity | 90 Wh | 90 Wh |
| Power adapter | 240 W | 240 W |
| USB-C charging (Power Delivery) | Yes | Yes |
| USB-C charging power | — | 100 W |
| Design & cooling | ||
| Weight | 1.95 kg | 1.99 kg |
| Thickness | 17 mm | 20 mm |
| Width | 354 mm | 354 mm |
| Depth | 246 mm | 246 mm |
| Body material | Aluminium | Aluminium |
| Colours | Grey | Black |
| Cooling fans | 3 | 2 |
| Vapor chamber cooling | Yes | No |
| Liquid metal (CPU) | Yes | No |
| Fan noise (max. load) | 68 dB | 56.7 dB |
| Ports & wireless | ||
| Thunderbolt / USB4 | Thunderbolt 4 | USB4 |
| Thunderbolt or USB4 | Yes | Yes |
| USB-C ports | 2 | 2 |
| USB-A ports | 2 | 2 |
| HDMI | HDMI 2.1 | HDMI 2.1 |
| HDMI 2.1 | Yes | Yes |
| (Mini) DisplayPort | No | No |
| Ethernet | — | 5 Gbit/s |
| Ethernet port | Yes | Yes |
| SD card reader | Yes | No |
| 3.5 mm audio jack | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 6 |
| Keyboard & camera | ||
| Backlit keyboard | Yes | Yes |
| Numeric keypad | No | No |
| Key travel | 1.7 mm | — |
| Webcam | 1,080p | 1,080p |
| IR camera (face login) | Yes | Yes |
| Fingerprint reader | No | Yes |
| Audio | ||
| Speakers | 4 speakers | 2.2 |
| Dolby Atmos | Yes | No |
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