Asus ROG Zephyrus Duo 16 GX651 RTX 5080 (2026) vs Asus ROG Zephyrus Duo 16 GX651 RTX 5090 (2026)
What ROG Zephyrus Duo 16 GX651 RTX 5080 (2026) does better (0) and where ROG Zephyrus Duo 16 GX651 RTX 5090 (2026) wins (4) — every spec side by side.
vs
9.0Graphics9.1
8.9Overall performance9.0
9.0Display9.0
8.0Memory & storage8.0
4.9Battery & portability4.9
9.7Features & cooling9.7
Dimensions
Size comparison
ROG Zephyrus Duo 16 GX651 RTX 5080 (2026)ROG Zephyrus Duo 16 GX651 RTX 5090 (2026)
| ROG Zephyrus Duo 16 GX651 RTX 5080 (2026) | ROG Zephyrus Duo 16 GX651 RTX 5090 (2026) | Difference | |
|---|---|---|---|
| Depth | 246 mm | 246 mm | = |
| Width | 355 mm | 355 mm | = |
| Thickness | 24.9 mm | 24.9 mm | = |
| Weight | 2.8 kg | 2.8 kg | = |
Drawn to the same scale from the official dimensions (front and side).
Why is ROG Zephyrus Duo 16 GX651 RTX 5080 (2026) better than ROG Zephyrus Duo 16 GX651 RTX 5090 (2026)?
ROG Zephyrus Duo 16 GX651 RTX 5080 (2026) has no measurable advantages in this pair.
Why is ROG Zephyrus Duo 16 GX651 RTX 5090 (2026) better than ROG Zephyrus Duo 16 GX651 RTX 5080 (2026)?
- GPU compute (FP32)34 TFLOPS vs 41.6 TFLOPS+22%
- 3DMark Steel Nomad Light22,698 vs 26,964+19%
- Video memory16 GB vs 24 GB+50%
- GPU shader cores7,680 vs 10,496+37%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5080 Laptop | GeForce RTX 5090 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 135 W | 135 W |
| Video memory | 16 GB | 24 GB |
| Video memory type | GDDR7 | GDDR7 |
| GPU shader cores | 7,680 | 10,496 |
| GPU compute (FP32) | 34 TFLOPS | 41.6 TFLOPS |
| 3DMark Steel Nomad Light | 22,698 | 26,964 |
| Processor | ||
| Processor | Core Ultra 9 386H | Core Ultra 9 386H |
| CPU maker | Intel | Intel |
| CPU cores | 16 | 16 |
| CPU threads | 16 | 16 |
| Max CPU clock | 4.9 GHz | 4.9 GHz |
| Processor options | Core Ultra 9 386H | Core Ultra 9 386H |
| Geekbench 6 multi-core | 17,133 | 17,133 |
| Geekbench 6 single-core | 2,952 | 2,952 |
| Cinebench 2024 multi-core | 1,283 | 1,283 |
| Display | ||
| Screen size | 16″ | 16″ |
| Resolution | 2880 × 1800 | 2880 × 1800 |
| Resolution class | 3K (1800p/2000p) | 3K (1800p/2000p) |
| Refresh rate | 120 Hz | 120 Hz |
| Panel type | OLED | OLED |
| Brightness | 500 nits | 500 nits |
| sRGB coverage | 100% | 100% |
| Response time | 1 ms | 1 ms |
| DCI-P3 coverage | 100% | 100% |
| Pixel density | 212 ppi | 212 ppi |
| Aspect ratio | 16:10 | 16:10 |
| G-Sync / FreeSync | Yes | Yes |
| Advanced Optimus | No | No |
| MUX switch | Yes | Yes |
| HDR | Yes | Yes |
| Touchscreen | Yes | Yes |
| Memory & storage | ||
| RAM (up to) | 64 GB | 64 GB |
| RAM (base) | 16 GB | 16 GB |
| RAM type | LPDDR5X | LPDDR5X |
| RAM speed | 8,533 MHz | 8,533 MHz |
| Max. supported RAM | — | 64 GB |
| Upgradable RAM | No | No |
| SSD (up to) | 4,096 GB | 4,096 GB |
| SSD (base) | 1,024 GB | 1,024 GB |
| M.2 SSD slots | 2 | 2 |
| SSD interface | PCIe 5.0 x4 | PCIe 5.0 x4 |
| Battery & power | ||
| Battery capacity | 90 Wh | 90 Wh |
| Power adapter | 250 W | 250 W |
| USB-C charging (Power Delivery) | Yes | Yes |
| USB-C charging power | 100 W | 100 W |
| Design & cooling | ||
| Weight | 2.82 kg | 2.82 kg |
| Thickness | 24.9 mm | 24.9 mm |
| Width | 355 mm | 355 mm |
| Depth | 246 mm | 246 mm |
| Body material | Aluminium | Aluminium |
| Colours | Gray | Gray |
| Cooling fans | 2 | 2 |
| Vapor chamber cooling | Yes | Yes |
| Liquid metal (CPU) | No | No |
| Fan noise (max. load) | 54.1 dB | 54.1 dB |
| Ports & wireless | ||
| Thunderbolt / USB4 | Thunderbolt 4 | Thunderbolt 4 |
| 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 port | No | No |
| SD card reader | Yes | Yes |
| 3.5 mm audio jack | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 6 | 6 |
| Keyboard & camera | ||
| Keyboard backlight | — | Single-colour RGB |
| Backlit keyboard | Yes | Yes |
| Numeric keypad | No | No |
| Key travel | 1.7 mm | 1.7 mm |
| Webcam | 1,080p | 1,080p |
| IR camera (face login) | Yes | Yes |
| Fingerprint reader | No | No |
| Audio | ||
| Speakers | 2.4 | 2.4 |
| Dolby Atmos | Yes | Yes |
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