Acer Predator Helios 18 AI RTX 5080 (2026) vs Lenovo Legion 9 18 G10 RTX 5090 (2025)
What Predator Helios 18 AI RTX 5080 (2026) does better (11) and where Legion 9 18 G10 RTX 5090 (2025) wins (14) — every spec side by side.
vs
6.9Graphics9.1
9.0Overall performance8.6
9.5Display9.3
9.6Memory & storage5.9
6.6Battery & portability7.9
6.9Features & cooling9.0
Dimensions
Size comparison
Predator Helios 18 AI RTX 5080 (2026)Legion 9 18 G10 RTX 5090 (2025)
| Predator Helios 18 AI RTX 5080 (2026) | Legion 9 18 G10 RTX 5090 (2025) | Difference | |
|---|---|---|---|
| Depth | 307.9 mm | 297 mm | +10.9 mm |
| Width | 401 mm | 403 mm | −2 mm |
| Thickness | 29.6 mm | 28 mm | +1.6 mm |
| Weight | 3.5 kg | 3.5 kg | = |
Drawn to the same scale from the official dimensions (front and side).
Why is Predator Helios 18 AI RTX 5080 (2026) better than Legion 9 18 G10 RTX 5090 (2025)?
- RAM (up to)192 GB vs 64 GB3×
- SSD (up to)8,192 GB vs 2,000 GB4.1×
- Brightness1,000 nits vs 540 nits+85%
- Geekbench 6 multi-core23,284 vs 22,129+5%
- Refresh rate250 Hz vs 240 Hz+4%
- Cinebench 2024 multi-core2,608 vs 2,079+25%
- Advanced OptimusYes · Legion 9 18 G10 RTX 5090 (2025): No
- RAM speed6,400 MHz vs 5,600 MHz+14%
- DCI-P3 coverage100% vs 89%+12%
- Fan noise (max. load)50.3 dB vs 56 dB+11%
- Geekbench 6 single-core3,411 vs 3,236+5%
Why is Legion 9 18 G10 RTX 5090 (2025) better than Predator Helios 18 AI RTX 5080 (2026)?
- Resolution classQHD (1440p/1600p) vs 4K (2160p/2400p)
- GPU compute (FP32)42 TFLOPS vs 51.4 TFLOPS+22%
- 3DMark Steel Nomad Light25,580 vs 30,865+21%
- Video memory16 GB vs 24 GB+50%
- RAM (base)16 GB vs 64 GB4×
- GPU shader cores7,680 vs 10,496+37%
- Cooling fans2 vs 42×
- Vapor chamber coolingNo · Predator Helios 18 AI RTX 5080 (2026): Yes
- SSD (base)1,024 GB vs 2,000 GB+95%
- Thickness29.6 mm vs 28 mm+6%
- Pixel density168 ppi vs 252 ppi+50%
- USB-C ports2 vs 3+50%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 5080 Laptop | GeForce RTX 5090 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 175 W | 175 W |
| Video memory | 16 GB | 24 GB |
| Video memory type | GDDR7 | GDDR7 |
| GPU shader cores | 7,680 | 10,496 |
| GPU compute (FP32) | 42 TFLOPS | 51.4 TFLOPS |
| 3DMark Steel Nomad Light | 25,580 | 30,865 |
| Processor | ||
| Processor | Core Ultra 9 290HX Plus | Core Ultra 9 275HX |
| CPU maker | Intel | Intel |
| CPU cores | 24 | 24 |
| CPU threads | 24 | 24 |
| Max CPU clock | 5.5 GHz | 5.4 GHz |
| Processor options | Core Ultra 9 290HX Plus | Core Ultra 9 275HX, Core Ultra 9 290HX Plus |
| Geekbench 6 multi-core | 23,284 | 22,129 |
| Geekbench 6 single-core | 3,411 | 3,236 |
| Cinebench 2024 multi-core | 2,608 | 2,079 |
| Display | ||
| Screen size | 18″ | 18″ |
| Resolution | 2560 × 1600 | 3840 × 2400 |
| Resolution class | QHD (1440p/1600p) | 4K (2160p/2400p) |
| Refresh rate | 250 Hz | 240 Hz |
| Panel type | Mini-LED | Mini-LED |
| Brightness | 1,000 nits | 540 nits |
| sRGB coverage | 100% | 100% |
| Response time | 3 ms | 3 ms |
| DCI-P3 coverage | 100% | 89% |
| Pixel density | 168 ppi | 252 ppi |
| Aspect ratio | 16:10 | 16:10 |
| G-Sync / FreeSync | Yes | Yes |
| Advanced Optimus | Yes | No |
| MUX switch | Yes | Yes |
| HDR | Yes | Yes |
| Touchscreen | No | No |
| Memory & storage | ||
| RAM (up to) | 192 GB | 64 GB |
| RAM (base) | 16 GB | 64 GB |
| RAM type | DDR5 | DDR5 |
| RAM speed | 6,400 MHz | 5,600 MHz |
| Max. supported RAM | 192 GB | 192 GB |
| RAM slots | 4 | 4 |
| Upgradable RAM | Yes | Yes |
| SSD (up to) | 8,192 GB | 2,000 GB |
| SSD (base) | 1,024 GB | 2,000 GB |
| M.2 SSD slots | 3 | 4 |
| SSD interface | PCIe 5.0 x4 | PCIe 5.0 x4 |
| Battery & power | ||
| Battery capacity | 100 Wh | 100 Wh |
| Power adapter | 400 W | 400 W |
| USB-C charging (Power Delivery) | Yes | Yes |
| USB-C charging power | 140 W | 140 W |
| Design & cooling | ||
| Weight | 3.5 kg | 3.5 kg |
| Thickness | 29.6 mm | 28 mm |
| Width | 401 mm | 403 mm |
| Depth | 307.9 mm | 297 mm |
| Body material | Aluminium, Plastic | Aluminium |
| Colours | Blue | Grey |
| Cooling fans | 2 | 4 |
| Vapor chamber cooling | No | Yes |
| Liquid metal (CPU) | Yes | Yes |
| Fan noise (max. load) | 50.3 dB | 56 dB |
| Ports & wireless | ||
| Thunderbolt / USB4 | Thunderbolt 5 | Thunderbolt 5 |
| Thunderbolt or USB4 | Yes | Yes |
| USB-C ports | 2 | 3 |
| USB-A ports | 3 | 3 |
| 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 | 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 | ||
| Keyboard backlight | Single-colour RGB | — |
| Backlit keyboard | Yes | Yes |
| Numeric keypad | Yes | Yes |
| Key travel | — | 1.6 mm |
| Webcam | 1,080p | 1,440p |
| IR camera (face login) | Yes | Yes |
| Fingerprint reader | No | No |
| Audio | ||
| Speakers | 6.0 | 6 speakers |
| Dolby Atmos | No | No |
Related comparisons
vs
Acer Predator Helios 18 AI RTX 5080 (2026)vsMSI Raider 18 Max HX A2W RTX 5090 (2026)9.59.2vs
Acer Predator Helios 18 AI RTX 5080 (2026)vsRazer Blade 18 RTX 5090 (2026)9.59.0vs
Acer Predator Helios 18 AI RTX 5080 (2026)vsAcer Predator Helios 18 AI PH18-I71 RTX 5090 (2026)9.59.4
vsAcer Predator Helios 18 AI RTX 5090 (2025)vsAcer Predator Helios 18 AI RTX 5080 (2026)9.79.5vs
Acer Predator Helios 18 AI RTX 5080 (2026)vsMSI Titan 18 HX AI RTX 5080 (2026)9.59.3vsAcer Predator Helios 18 AI RTX 5080 (2026)vsMSI Titan 18 HX AI RTX 5090 (2026)9.59.6