Professional single-GPU CUDA with USA assembly and warranty
Sentinel RTX 5090 Tower Workstation
Empowered PC · Verified 2026-07-23
From $6,999
USA-assembled RTX 5090 workstation with 3-year warranty and generous 8TB storage. Solid value for professional CUDA work.
Main limitation: Single GPU; air cooling only; no NVLink
Some links are affiliate links. We may earn a commission at no extra cost to you. Full disclosure.
Key Specifications
| Specification | Value |
|---|---|
| Form Factor | Mid-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 | AMD Ryzen 9 9950X |
| CPU Cores | 16 |
| Primary Storage | 8192 |
| Storage Type | NVMe SSD (2x4TB) |
| Power Supply | 1200 |
| Cooling | air cooling |
| OS | Windows 11 Pro |
| Linux Support | Yes |
| Windows Support | Yes |
| WSL Support | Yes |
| CUDA Support | Yes |
| Metal Support | No |
| Warranty | 3 |
| 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
- ✓ 3-year warranty
Cons
- ✗ Limited accelerator memory (32GB) — 70B models require multi-GPU or offloading
- ✗ Single GPU; air cooling only; no NVLink
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: Empowered PC Sentinel Product Page
https://www.sentinelcomputers.com/
Verification date: 2026-07-23
Data quality: Vendor specification — from manufacturer datasheet. No hands-on testing was performed.