Asus ROG Strix G18 G815 RTX 5080 (2025) vs Asus ROG Strix SCAR 18 G834 RTX 4080 (2024)
What ROG Strix G18 G815 RTX 5080 (2025) does better (11) and where ROG Strix SCAR 18 G834 RTX 4080 (2024) wins (7) — every spec side by side.
vs
7.7Graphics6.4
8.3Overall performance6.6
8.6Display9.0
4.0Memory & storage6.4
3.0Battery & portability4.7
8.3Features & cooling3.7
Dimensions
Size comparison
ROG Strix G18 G815 RTX 5080 (2025)ROG Strix SCAR 18 G834 RTX 4080 (2024)
| ROG Strix G18 G815 RTX 5080 (2025) | ROG Strix SCAR 18 G834 RTX 4080 (2024) | Difference | |
|---|---|---|---|
| Depth | 298 mm | 294 mm | +4 mm |
| Width | 399 mm | 399 mm | = |
| Thickness | 32 mm | 30.8 mm | +1.2 mm |
| Weight | 3.2 kg | 3.1 kg | +0.1 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is ROG Strix G18 G815 RTX 5080 (2025) better than ROG Strix SCAR 18 G834 RTX 4080 (2024)?
- 3DMark Steel Nomad Light27,302 vs 22,195+23%
- GPU compute (FP32)42 TFLOPS vs 37.6 TFLOPS+12%
- Video memory16 GB vs 12 GB+33%
- RAM (base)32 GB vs 16 GB2×
- Vapor chamber coolingYes · ROG Strix SCAR 18 G834 RTX 4080 (2024): No
- IR camera (face login)Yes · ROG Strix SCAR 18 G834 RTX 4080 (2024): No
- Wi-Fi standardWi-Fi 7 vs Wi-Fi 6E+8%
- GPU shader cores7,680 vs 7,424+3%
- USB-A ports3 vs 2+50%
- Webcam1,080p vs 720p+50%
- Fan noise (max. load)49.7 dB vs 52 dB+5%
Why is ROG Strix SCAR 18 G834 RTX 4080 (2024) better than ROG Strix G18 G815 RTX 5080 (2025)?
- SSD (up to)1,000 GB vs 8,192 GB8.2×
- Brightness500 nits vs 1,100 nits2.2×
- Weight3.2 kg vs 3.1 kg+3%
- Thickness32 mm vs 30.8 mm+4%
- Key travel1.7 mm vs 2 mm+18%
- Max CPU clock5.5 GHz vs 5.8 GHz+5%
- SSD (base)1,000 GB vs 1,024 GB+2%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5080 Laptop | GeForce RTX 4080 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 175 W | 175 W |
| Video memory | 16 GB | 12 GB |
| Video memory type | GDDR7 | GDDR6 |
| GPU shader cores | 7,680 | 7,424 |
| GPU compute (FP32) | 42 TFLOPS | 37.6 TFLOPS |
| 3DMark Steel Nomad Light | 27,302 | 22,195 |
| Processor | ||
| Processor | Core Ultra 9 290HX Plus | Core i9-14900HX |
| CPU maker | Intel | Intel |
| CPU cores | 24 | 24 |
| CPU threads | — | 32 |
| Max CPU clock | 5.5 GHz | 5.8 GHz |
| Processor options | Ryzen 9 8940HX, Core Ultra 9 275HX, Ryzen 9 9955HX | Core i9-14900HX |
| Geekbench 6 multi-core | — | 19,749 |
| Geekbench 6 single-core | — | 3,256 |
| Cinebench 2024 multi-core | — | 1,928 |
| Display | ||
| Screen size | 18″ | 18″ |
| Resolution | 2560 × 1600 | 2560 × 1600 |
| Resolution class | QHD (1440p/1600p) | QHD (1440p/1600p) |
| Refresh rate | 240 Hz | 240 Hz |
| Panel type | Mini-LED | Mini-LED |
| Brightness | 500 nits | 1,100 nits |
| sRGB coverage | 100% | 100% |
| Response time | 3 ms | 3 ms |
| DCI-P3 coverage | 100% | 100% |
| Pixel density | 168 ppi | 168 ppi |
| Aspect ratio | 16:10 | 16:10 |
| G-Sync / FreeSync | Yes | Yes |
| Advanced Optimus | No | No |
| MUX switch | Yes | Yes |
| HDR | Yes | Yes |
| Touchscreen | No | No |
| Memory & storage | ||
| RAM (up to) | 64 GB | 64 GB |
| RAM (base) | 32 GB | 16 GB |
| RAM type | DDR5 | DDR5 |
| RAM speed | 5,600 MHz | 5,600 MHz |
| Max. supported RAM | 64 GB | 64 GB |
| RAM slots | 2 | 2 |
| Upgradable RAM | Yes | Yes |
| SSD (up to) | 1,000 GB | 8,192 GB |
| SSD (base) | 1,000 GB | 1,024 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 | 3.2 kg | 3.1 kg |
| Thickness | 32 mm | 30.8 mm |
| Width | 399 mm | 399 mm |
| Depth | 298 mm | 294 mm |
| Body material | Plastic | Aluminium, Plastic |
| Colours | Green | Black |
| Cooling fans | 3 | 3 |
| Vapor chamber cooling | Yes | No |
| Liquid metal (CPU) | Yes | Yes |
| Fan noise (max. load) | 49.7 dB | 52 dB |
| Ports & wireless | ||
| Thunderbolt / USB4 | Thunderbolt 5 | Thunderbolt 4 |
| Thunderbolt or USB4 | Yes | Yes |
| 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 | — |
| Ethernet port | Yes | Yes |
| SD card reader | No | No |
| 3.5 mm audio jack | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 6E |
| Bluetooth | 5.4 | 5.3 |
| Keyboard & camera | ||
| Backlit keyboard | Yes | Yes |
| Numeric keypad | Yes | Yes |
| Key travel | 1.7 mm | 2 mm |
| Webcam | 1,080p | 720p |
| IR camera (face login) | Yes | No |
| Fingerprint reader | No | No |
| Audio | ||
| Speakers | 2.0 | 2.2 |
| Dolby Atmos | Yes | Yes |
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