Dual-use AI and gaming desktop
HP OMEN 45L RTX 5090 Desktop
HP · Verified 2026-07-23
From $5,499
Gaming desktop repurposed for AI. RTX 5090 with 32GB VRAM at competitive price. Best for users who want AI + gaming.
Main limitation: Consumer-grade support; not ISV certified; limited multi-GPU
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Key Specifications
| Specification | Value |
|---|---|
| Form Factor | Full-tower |
| GPU | NVIDIA GeForce RTX 5090 |
| GPU Count | 1 |
| VRAM per GPU | 32 |
| Total Accelerator Memory | 32 |
| Memory Architecture | dedicated VRAM (GDDR7) |
| GPU Memory Type | GDDR7 |
| System RAM | 128 |
| RAM Type | DDR5 |
| CPU | Intel Core Ultra 9 285K |
| CPU Cores | 24 |
| Primary Storage | 4096 |
| Storage Type | NVMe SSD |
| Power Supply | 1200 |
| Cooling | liquid cooling (patented chamber) |
| OS | Windows 11 Pro |
| Linux Support | Yes (community) |
| Windows Support | Yes |
| WSL Support | Yes |
| CUDA Support | Yes |
| Metal Support | No |
| Warranty | 1 |
| Onsite Support | No |
| Release Year | 2025 |
What Models Can It Run?
Calculated estimates using weight-only memory analysis at Q4 (4-bit) quantization. Actual requirements vary by framework, context length, and runtime overhead. See methodology.
| Model | Params | Required VRAM (Q4) | Fits in 32GB? |
|---|---|---|---|
| Llama 3.1 8B | 8B | 5.52 GB | ✓ Yes |
| Llama 3.1 70B | 70B | 37.14 GB | ✗ No |
| Llama 3.2 1B | 1B | 2 GB | ✓ Yes |
| Llama 3.2 3B | 3B | 3.01 GB | ✓ Yes |
| Qwen 2.5 7B | 7B | 5.01 GB | ✓ Yes |
| Qwen 2.5 14B | 14B | 8.53 GB | ✓ Yes |
| Qwen 2.5 32B | 32B | 18.06 GB | ✓ Yes |
| Qwen 2.5 72B | 72B | 38.14 GB | ✗ No |
| Mistral 7B | 7B | 5.01 GB | ✓ Yes |
| Mixtral 8x7B | 46.7B | 25.44 GB | ✓ Yes |
| DeepSeek R1 7B | 7B | 5.01 GB | ✓ Yes |
| DeepSeek R1 32B | 32B | 18.06 GB | ✓ Yes |
| DeepSeek R1 70B | 70B | 37.14 GB | ✗ No |
| Phi-3 Medium 14B | 14B | 8.53 GB | ✓ Yes |
| Gemma 2 9B | 9B | 6.02 GB | ✓ Yes |
| Gemma 2 27B | 27B | 15.05 GB | ✓ Yes |
| Stable Diffusion XL | 6.6B | 4.81 GB | ✓ Yes |
| Flux.1 Dev | 12B | 7.52 GB | ✓ Yes |
| Flux.1 Schnell | 12B | 7.52 GB | ✓ Yes |
Max model size: 34B class models (~57B params at Q4). These are calculated estimates, not measured results.
Pros & Cons
Pros
- ✓ Linux support
- ✓ Windows support
Cons
- ✗ Limited accelerator memory (32GB) — 70B models require multi-GPU or offloading
- ✗ Consumer-grade support; not ISV certified; limited multi-GPU
Compare with Other Workstations
Apple Mac Studio M2 Ultra (192GB)
Apple Mac Studio M2 Ultra (64GB)
ArsenalPC MES2X Dual RTX 5090 AI Workstation
BIZON G3000 G2 (1x RTX 5090)
BIZON G3000 G2 (4x RTX 5090)
BOXX APEXX 8R (1x RTX PRO 6000 Blackwell)
Custom Dual RTX 4090 Training Workstation
Custom RTX 5090 AI Workstation (Value Build)
Sources & Verification
Primary source: HP OMEN 45L Product Page
https://www.hp.com/us-en/shop/pdp/omen-45l-gaming-desktop
Verification date: 2026-07-23
Data quality: Vendor specification — from manufacturer datasheet. No hands-on testing was performed.