Acer Predator Helios 18 AI RTX 5090 (2025) vs MSI Stealth 18 HX AI RTX 5090 (2025)
What Predator Helios 18 AI RTX 5090 (2025) does better (21) and where Stealth 18 HX AI RTX 5090 (2025) wins (4) — every spec side by side.
vs
9.3Graphics9.0
9.2Overall performance7.3
9.5Display2.3
9.6Memory & storage8.3
8.0Battery & portability9.6
6.9Features & cooling5.5
Dimensions
Size comparison
Predator Helios 18 AI RTX 5090 (2025)Stealth 18 HX AI RTX 5090 (2025)
| Predator Helios 18 AI RTX 5090 (2025) | Stealth 18 HX AI RTX 5090 (2025) | Difference | |
|---|---|---|---|
| Depth | 307.9 mm | 289.7 mm | +18.2 mm |
| Width | 401 mm | 400 mm | +1 mm |
| Thickness | 29.6 mm | 24 mm | +5.6 mm |
| Weight | 3.2 kg | 2.9 kg | +0.3 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is Predator Helios 18 AI RTX 5090 (2025) better than Stealth 18 HX AI RTX 5090 (2025)?
- Refresh rate250 Hz vs 144 Hz+74%
- RAM (up to)192 GB vs 128 GB+50%
- Resolution classQHD (1440p/1600p) vs Full HD (1080p/1200p)
- Panel typeMini-LED vs IPS
- SSD (up to)8,192 GB vs 4,096 GB2×
- Geekbench 6 multi-core22,453 vs 19,366+16%
- 3DMark Steel Nomad Light31,590 vs 30,526+3%
- G-Sync / FreeSyncYes · Stealth 18 HX AI RTX 5090 (2025): No
- Advanced OptimusYes · Stealth 18 HX AI RTX 5090 (2025): No
- HDRYes · Stealth 18 HX AI RTX 5090 (2025): No
- Liquid metal (CPU)Yes · Stealth 18 HX AI RTX 5090 (2025): No
- CPU cores24 vs 20+20%
Why is Stealth 18 HX AI RTX 5090 (2025) better than Predator Helios 18 AI RTX 5090 (2025)?
- Weight3.2 kg vs 2.89 kg+11%
- Thickness29.6 mm vs 24 mm+23%
- RAM (base)16 GB vs 32 GB2×
- Vapor chamber coolingNo · Predator Helios 18 AI RTX 5090 (2025): Yes
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5090 Laptop | GeForce RTX 5090 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 175 W | 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 | 51.4 TFLOPS |
| 3DMark Steel Nomad Light | 31,590 | 30,526 |
| Processor | ||
| Processor | Core Ultra 9 275HX | Core Ultra 7 255HX |
| CPU maker | Intel | Intel |
| CPU cores | 24 | 20 |
| CPU threads | 24 | 20 |
| Max CPU clock | 5.4 GHz | 5.2 GHz |
| Processor options | Core Ultra 9 275HX | Core Ultra 7 255HX, Core Ultra 7 265HX, Core Ultra 9 275HX, Core Ultra 9 290HX Plus |
| Geekbench 6 multi-core | 22,453 | 19,366 |
| Geekbench 6 single-core | 3,306 | 3,130 |
| Cinebench 2024 multi-core | 2,147 | 1,915 |
| Display | ||
| Screen size | 18″ | 18″ |
| Resolution | 2560 × 1600 | 1920 × 1200 |
| Resolution class | QHD (1440p/1600p) | Full HD (1080p/1200p) |
| Refresh rate | 250 Hz | 144 Hz |
| Panel type | Mini-LED | IPS |
| Brightness | 1,000 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 | Yes | No |
| MUX switch | Yes | Yes |
| HDR | Yes | No |
| Touchscreen | No | No |
| Memory & storage | ||
| RAM (up to) | 192 GB | 128 GB |
| RAM (base) | 16 GB | 32 GB |
| RAM type | DDR5 | DDR5 |
| RAM speed | 6,400 MHz | 6,400 MHz |
| Max. supported RAM | 192 GB | 128 GB |
| RAM slots | 4 | 2 |
| Upgradable RAM | Yes | Yes |
| SSD (up to) | 8,192 GB | 4,096 GB |
| SSD (base) | 1,024 GB | 1,024 GB |
| M.2 SSD slots | 3 | 2 |
| SSD interface | PCIe 5.0 x4 | PCIe 4.0 x4 |
| Battery & power | ||
| Battery capacity | 99 Wh | 100 Wh |
| Power adapter | 330 W | 280 W |
| USB-C charging (Power Delivery) | Yes | Yes |
| USB-C charging power | 140 W | 140 W |
| Design & cooling | ||
| Weight | 3.2 kg | 2.89 kg |
| Thickness | 29.6 mm | 24 mm |
| Width | 401 mm | 400 mm |
| Depth | 307.9 mm | 289.7 mm |
| Body material | Aluminium, Plastic | Aluminium |
| Colours | Blue | Black |
| Cooling fans | 2 | 2 |
| Vapor chamber cooling | No | Yes |
| Liquid metal (CPU) | Yes | No |
| Fan noise (max. load) | 50.3 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 port | Yes | Yes |
| SD card reader | Yes | 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 |
| Webcam | 1,080p | 1,080p |
| IR camera (face login) | Yes | Yes |
| Fingerprint reader | No | Yes |
| Audio | ||
| Speakers | 6.0 | 2.4 |
| Dolby Atmos | No | No |
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