★ Recommended for Local AI
GPU — AMD
AMD Radeon RX 9070 XT
AMD RDNA 4 architecture optimized for price-to-VRAM performance. Strong choice for Linux-based ROCm AI workloads.
- VRAM
- 16GB
- TDP
- 250W
- Bandwidth
- 640GB/s
- AI Throughput
- 389TOPS
Est. Price$579.99
AMD Radeon RX 9070 XT vs NVIDIA GeForce RTX 3090
Architect's technical teardown: VRAM capacity, memory bandwidth, TDP, and AI throughput — compared head-to-head for local LLM workloads.
GPU — NVIDIA
NVIDIA GeForce RTX 3090
The legendary used-market GOAT. 24GB VRAM at a fraction of the cost of 4090/5090. Still handles 70B models with ease.
- VRAM
- 24GB
- TDP
- 350W
- Bandwidth
- 936GB/s
- AI Throughput
- 285TOPS
Est. Price$749.99
Full Specification Matrix
| Metric | AMD Radeon RX 9070 XT | NVIDIA GeForce RTX 3090 |
|---|---|---|
| VRAM | 16GB | 24GB |
| Memory Bandwidth | 640 GB/s | 936 GB/s |
| AI Throughput (TOPS) | 389 | 285 |
| TDP (Power Draw) | 250W | 350W |
| Est. Price | $579.99 | $749.99 |