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- ROG Strix Scar 16 G635 RTX 5090 (2025) vs ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026)
Asus ROG Strix Scar 16 G635 RTX 5090 (2025) vs Asus ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026)
What ROG Strix Scar 16 G635 RTX 5090 (2025) does better (1) and where ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026) wins (8) — every spec side by side.
vs
9.6Display9.8
6.7Memory & storage7.9
3.1Battery & portability4.4
9.6Features & cooling9.8
Dimensions
Size comparison
ROG Strix Scar 16 G635 RTX 5090 (2025)ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026)
| ROG Strix Scar 16 G635 RTX 5090 (2025) | ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026) | Difference | |
|---|---|---|---|
| Depth | 268 mm | 247 mm | +21 mm |
| Width | 354 mm | 355 mm | −1 mm |
| Thickness | 31 mm | 25 mm | +6 mm |
| Weight | 2.8 kg | 2.8 kg | = |
Drawn to the same scale from the official dimensions (front and side).
Why is ROG Strix Scar 16 G635 RTX 5090 (2025) better than ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026)?
- Brightness1,200 nits vs 1,100 nits+9%
Why is ROG Zephyrus Duo 16 OLED GX651AX RTX 5090 (2026) better than ROG Strix Scar 16 G635 RTX 5090 (2025)?
- Resolution classQHD (1440p/1600p) vs 3K (1800p/2000p)
- Panel typeMini-LED vs OLED
- SSD (up to)1,000 GB vs 2,000 GB2×
- Thickness31 mm vs 25 mm+24%
- RAM typeDDR5 vs LPDDR5X
- SSD (base)1,000 GB vs 2,000 GB2×
- SD card readerNo · ROG Strix Scar 16 G635 RTX 5090 (2025): Yes
- Bluetooth5.4 vs 6+11%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5090 Laptop | GeForce RTX 5090 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 175 W | — |
| Video memory | 24 GB | 24 GB |
| Video memory type | GDDR7 | GDDR7 |
| GPU shader cores | 10,496 | 10,496 |
| GPU compute (FP32) | 51.4 TFLOPS | — |
| 3DMark Steel Nomad Light | 29,079 | — |
| Processor | ||
| Processor | Core Ultra 9 275HX | Core Ultra 9 386H |
| CPU maker | Intel | Intel |
| CPU cores | 24 | — |
| Max CPU clock | 5.4 GHz | — |
| Processor options | Core Ultra 7 255HX, Core Ultra 9 275HX | — |
| Display | ||
| Screen size | 16″ | 16″ |
| Resolution | 2560 × 1600 | 2880 × 1800 |
| Resolution class | QHD (1440p/1600p) | 3K (1800p/2000p) |
| Refresh rate | 240 Hz | — |
| Panel type | Mini-LED | OLED |
| Brightness | 1,200 nits | 1,100 nits |
| sRGB coverage | 100% | — |
| Response time | 3 ms | — |
| DCI-P3 coverage | 100% | — |
| Pixel density | 189 ppi | — |
| Aspect ratio | 16:10 | 16:10 |
| G-Sync / FreeSync | Yes | — |
| Advanced Optimus | No | — |
| MUX switch | Yes | — |
| HDR | Yes | — |
| Touchscreen | Yes | Yes |
| Memory & storage | ||
| RAM (up to) | 64 GB | 64 GB |
| RAM (base) | 64 GB | 64 GB |
| RAM type | DDR5 | LPDDR5X |
| RAM speed | 5,600 MHz | — |
| Max. supported RAM | 64 GB | — |
| RAM slots | 2 | — |
| Upgradable RAM | Yes | — |
| SSD (up to) | 1,000 GB | 2,000 GB |
| SSD (base) | 1,000 GB | 2,000 GB |
| M.2 SSD slots | 2 | — |
| SSD interface | PCIe 4.0 x4 | — |
| Battery & power | ||
| Battery capacity | 90 Wh | 90 Wh |
| Power adapter | 380 W | 250 W |
| USB-C charging (Power Delivery) | Yes | — |
| USB-C charging power | 100 W | — |
| Design & cooling | ||
| Weight | 2.8 kg | 2.82 kg |
| Thickness | 31 mm | 25 mm |
| Width | 354 mm | 355 mm |
| Depth | 268 mm | 247 mm |
| Body material | Aluminium, Plastic | — |
| Colours | Black | Grey |
| Cooling fans | 3 | — |
| Vapor chamber cooling | Yes | — |
| Liquid metal (CPU) | No | — |
| Fan noise (max. load) | 57.2 dB | — |
| Ports & wireless | ||
| Thunderbolt / USB4 | Thunderbolt 5 | Thunderbolt 4 |
| Thunderbolt or USB4 | Yes | Yes |
| USB-C ports | 2 | — |
| USB-A ports | 3 | — |
| HDMI | HDMI 2.1 | HDMI 2.1 |
| HDMI 2.1 | Yes | Yes |
| (Mini) DisplayPort | No | — |
| Ethernet | 5 Gbit/s | — |
| Ethernet port | Yes | Yes |
| SD card reader | No | Yes |
| 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 | — |
| Numeric keypad | No | — |
| Key travel | 1.7 mm | — |
| Webcam | 1,080p | 1,080p |
| IR camera (face login) | Yes | — |
| Fingerprint reader | No | — |
| Audio | ||
| Speakers | 4 speakers | 4 speakers |
| Dolby Atmos | Yes | Yes |
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