Asus ROG Strix Scar 16 G635 RTX 5090 (2025) vs Asus ROG Zephyrus Duo 16 GX650 RTX 4090 (2023)
What ROG Strix Scar 16 G635 RTX 5090 (2025) does better (16) and where ROG Zephyrus Duo 16 GX650 RTX 4090 (2023) wins (7) — every spec side by side.
vs
9.7Graphics9.7
9.7Overall performance9.4
9.6Display9.3
6.6Memory & storage5.3
3.1Battery & portability3.6
9.7Features & cooling6.4
Dimensions
Size comparison
ROG Strix Scar 16 G635 RTX 5090 (2025)ROG Zephyrus Duo 16 GX650 RTX 4090 (2023)
| ROG Strix Scar 16 G635 RTX 5090 (2025) | ROG Zephyrus Duo 16 GX650 RTX 4090 (2023) | Difference | |
|---|---|---|---|
| Depth | 268 mm | 266 mm | +2 mm |
| Width | 354 mm | 355 mm | −1 mm |
| Thickness | 31 mm | 30 mm | +1 mm |
| Weight | 2.8 kg | 2.7 kg | +0.1 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 GX650 RTX 4090 (2023)?
- RAM (up to)64 GB vs 32 GB2×
- Panel typeMini-LED vs IPS
- Thunderbolt or USB4Yes · ROG Zephyrus Duo 16 GX650 RTX 4090 (2023): No
- GPU compute (FP32)51.4 TFLOPS vs 45.2 TFLOPS+14%
- Video memory24 GB vs 16 GB+50%
- CPU cores24 vs 16+50%
- 3DMark Steel Nomad Light29,079 vs 26,424+10%
- Vapor chamber coolingYes · ROG Zephyrus Duo 16 GX650 RTX 4090 (2023): No
- IR camera (face login)Yes · ROG Zephyrus Duo 16 GX650 RTX 4090 (2023): No
- Wi-Fi standardWi-Fi 7 vs Wi-Fi 6+17%
- Brightness1,200 nits vs 1,100 nits+9%
- GPU shader cores10,496 vs 9,728+8%
Why is ROG Zephyrus Duo 16 GX650 RTX 4090 (2023) better than ROG Strix Scar 16 G635 RTX 5090 (2025)?
- SSD (up to)1,000 GB vs 2,000 GB2×
- Weight2.8 kg vs 2.67 kg+5%
- SSD (base)1,000 GB vs 2,000 GB2×
- Liquid metal (CPU)No · ROG Strix Scar 16 G635 RTX 5090 (2025): Yes
- SD card readerNo · ROG Strix Scar 16 G635 RTX 5090 (2025): Yes
- Thickness31 mm vs 30 mm+3%
- Fan noise (max. load)57.2 dB vs 56 dB+2%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5090 Laptop | GeForce RTX 4090 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 175 W | 175 W |
| Video memory | 24 GB | 16 GB |
| Video memory type | GDDR7 | GDDR6 |
| GPU shader cores | 10,496 | 9,728 |
| GPU compute (FP32) | 51.4 TFLOPS | 45.2 TFLOPS |
| 3DMark Steel Nomad Light | 29,079 | 26,424 |
| Processor | ||
| Processor | Core Ultra 9 275HX | Ryzen 9 7945HX |
| CPU maker | Intel | AMD |
| CPU cores | 24 | 16 |
| CPU threads | — | 32 |
| Max CPU clock | 5.4 GHz | 5.4 GHz |
| Processor options | Core Ultra 7 255HX, Core Ultra 9 275HX | Ryzen 9 7945HX |
| Geekbench 6 multi-core | — | 19,038 |
| Geekbench 6 single-core | — | 3,105 |
| Cinebench 2024 multi-core | — | 1,961 |
| 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 | Mini-LED | IPS |
| Brightness | 1,200 nits | 1,100 nits |
| sRGB coverage | 100% | 100% |
| Response time | 3 ms | 3 ms |
| DCI-P3 coverage | 100% | 99% |
| Pixel density | 189 ppi | 189 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 | No |
| Memory & storage | ||
| RAM (up to) | 64 GB | 32 GB |
| RAM (base) | 32 GB | 32 GB |
| RAM type | DDR5 | DDR5 |
| RAM speed | 5,600 MHz | 4,800 MHz |
| Max. supported RAM | 64 GB | 64 GB |
| RAM slots | 2 | 2 |
| Upgradable RAM | Yes | Yes |
| SSD (up to) | 1,000 GB | 2,000 GB |
| SSD (base) | 1,000 GB | 2,000 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 | 380 W | 330 W |
| USB-C charging (Power Delivery) | Yes | Yes |
| USB-C charging power | 100 W | — |
| Design & cooling | ||
| Weight | 2.8 kg | 2.67 kg |
| Thickness | 31 mm | 30 mm |
| Width | 354 mm | 355 mm |
| Depth | 268 mm | 266 mm |
| Body material | Aluminium, Plastic | Aluminium |
| Colours | Black | Black |
| Cooling fans | 3 | 2 |
| Vapor chamber cooling | Yes | No |
| Liquid metal (CPU) | No | Yes |
| Fan noise (max. load) | 57.2 dB | 56 dB |
| Ports & wireless | ||
| Thunderbolt / USB4 | Thunderbolt 5 | — |
| Thunderbolt or USB4 | Yes | No |
| USB-C ports | 2 | 2 |
| USB-A ports | 3 | 2 |
| HDMI | HDMI 2.1 | HDMI 2.1 |
| HDMI 2.1 | Yes | Yes |
| (Mini) DisplayPort | No | No |
| Ethernet | 5 Gbit/s | 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 6 |
| Bluetooth | 5.4 | 5.2 |
| Keyboard & camera | ||
| Backlit keyboard | Yes | Yes |
| Numeric keypad | No | Yes |
| Key travel | 1.7 mm | 1.7 mm |
| Webcam | 1,080p | 1,080p |
| IR camera (face login) | Yes | No |
| Fingerprint reader | No | Yes |
| Audio | ||
| Speakers | 4 speakers | 6 speakers |
| Dolby Atmos | Yes | Yes |
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