Asus ROG Strix G18 G815 RTX 5090 (2025) vs MSI Stealth 18 HX AI A2XW RTX 5080 (2025)
What ROG Strix G18 G815 RTX 5090 (2025) does better (14) and where Stealth 18 HX AI A2XW RTX 5080 (2025) wins (10) — every spec side by side.
vs
9.6Graphics7.2
9.1Overall performance8.0
6.8Display3.6
5.1Memory & storage4.6
2.5Battery & portability9.6
8.1Features & cooling5.8
Dimensions
Size comparison
ROG Strix G18 G815 RTX 5090 (2025)Stealth 18 HX AI A2XW RTX 5080 (2025)
| ROG Strix G18 G815 RTX 5090 (2025) | Stealth 18 HX AI A2XW RTX 5080 (2025) | Difference | |
|---|---|---|---|
| Depth | 298 mm | 290 mm | +8 mm |
| Width | 399 mm | 400 mm | −1 mm |
| Thickness | 32 mm | 24 mm | +8 mm |
| Weight | 3.4 kg | 2.9 kg | +0.5 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is ROG Strix G18 G815 RTX 5090 (2025) better than Stealth 18 HX AI A2XW RTX 5080 (2025)?
- Refresh rate240 Hz vs 144 Hz+67%
- SSD (up to)4,096 GB vs 2,000 GB2×
- 3DMark Steel Nomad Light32,766 vs 26,447+24%
- GPU compute (FP32)51.4 TFLOPS vs 42 TFLOPS+22%
- Video memory24 GB vs 16 GB+50%
- GPU shader cores10,496 vs 7,680+37%
- G-Sync / FreeSyncYes · Stealth 18 HX AI A2XW RTX 5080 (2025): No
- HDRYes · Stealth 18 HX AI A2XW RTX 5080 (2025): No
- Liquid metal (CPU)Yes · Stealth 18 HX AI A2XW RTX 5080 (2025): No
- Dolby AtmosYes · Stealth 18 HX AI A2XW RTX 5080 (2025): No
- Cooling fans3 vs 2+50%
- USB-A ports3 vs 2+50%
Why is Stealth 18 HX AI A2XW RTX 5080 (2025) better than ROG Strix G18 G815 RTX 5090 (2025)?
- Resolution classQHD (1440p/1600p) vs 4K (2160p/2400p)
- Battery capacity90 Wh vs 100 Wh+11%
- Weight3.42 kg vs 2.89 kg+18%
- RAM (base)16 GB vs 64 GB4×
- Thickness32 mm vs 24 mm+33%
- Max. supported RAM64 GB vs 128 GB2×
- SD card readerNo · ROG Strix G18 G815 RTX 5090 (2025): Yes
- SSD (base)1,024 GB vs 2,000 GB+95%
- USB-C charging power100 W vs 140 W+40%
- RAM speed5,600 MHz vs 6,400 MHz+14%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5090 Laptop | GeForce RTX 5080 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 175 W | 175 W |
| Video memory | 24 GB | 16 GB |
| Video memory type | GDDR7 | GDDR7 |
| GPU shader cores | 10,496 | 7,680 |
| GPU compute (FP32) | 51.4 TFLOPS | 42 TFLOPS |
| 3DMark Steel Nomad Light | 32,766 | 26,447 |
| Processor | ||
| Processor | Core Ultra 9 275HX | Core Ultra 9 275HX |
| CPU maker | Intel | Intel |
| CPU cores | 24 | 24 |
| CPU threads | 24 | — |
| Max CPU clock | 5.4 GHz | 5.4 GHz |
| Processor options | Ryzen 9 8940HX, Core Ultra 9 275HX, Ryzen 9 9955HX | Core Ultra 7 255HX, Core Ultra 7 265HX, Core Ultra 9 275HX, Core Ultra 9 290HX Plus |
| Geekbench 6 multi-core | 22,783 | — |
| Geekbench 6 single-core | 3,357 | — |
| Cinebench 2024 multi-core | 2,141 | — |
| Display | ||
| Screen size | 18″ | 18″ |
| Resolution | 2560 × 1600 | 3840 × 2400 |
| Resolution class | QHD (1440p/1600p) | 4K (2160p/2400p) |
| Refresh rate | 240 Hz | 144 Hz |
| Panel type | IPS | IPS |
| Brightness | 500 nits | — |
| sRGB coverage | 100% | — |
| Response time | 3 ms | — |
| DCI-P3 coverage | 100% | — |
| Pixel density | 168 ppi | 126 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) | 64 GB | 64 GB |
| RAM (base) | 16 GB | 64 GB |
| RAM type | DDR5 | DDR5 |
| RAM speed | 5,600 MHz | 6,400 MHz |
| Max. supported RAM | 64 GB | 128 GB |
| RAM slots | 2 | 2 |
| Upgradable RAM | Yes | Yes |
| SSD (up to) | 4,096 GB | 2,000 GB |
| SSD (base) | 1,024 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 | 100 Wh |
| Power adapter | 380 W | 280 W |
| USB-C charging (Power Delivery) | Yes | Yes |
| USB-C charging power | 100 W | 140 W |
| Design & cooling | ||
| Weight | 3.42 kg | 2.89 kg |
| Thickness | 32 mm | 24 mm |
| Width | 399 mm | 400 mm |
| Depth | 298 mm | 290 mm |
| Body material | Plastic | Aluminium |
| Colours | Black | Black |
| Cooling fans | 3 | 2 |
| Vapor chamber cooling | Yes | Yes |
| Liquid metal (CPU) | Yes | No |
| Fan noise (max. load) | 49.7 dB | 63 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 | Yes |
| 3.5 mm audio jack | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 5.4 |
| Keyboard & camera | ||
| Backlit keyboard | Yes | Yes |
| Numeric keypad | Yes | Yes |
| Key travel | 1.7 mm | — |
| Webcam | 1,080p | 1,080p |
| IR camera (face login) | Yes | Yes |
| Fingerprint reader | No | Yes |
| Audio | ||
| Speakers | 2.0 | 6 speakers |
| Dolby Atmos | Yes | No |
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