Architect's technical teardown: VRAM capacity, memory bandwidth, TDP, and AI throughput — compared head-to-head for local LLM workloads.
High value 12GB performer. Excellent efficiency and enough VRAM for 8B models with high-context K-V cache needs.
AMD RDNA 4 architecture optimized for price-to-VRAM performance. Strong choice for Linux-based ROCm AI workloads.
| Metric | NVIDIA GeForce RTX 4070 Super | AMD Radeon RX 9070 XT |
|---|---|---|
| VRAM | 12GB | 16GB |
| Memory Bandwidth | 504 GB/s | 640 GB/s |
| AI Throughput (TOPS) | 568 | 389 |
| TDP (Power Draw) | 220W | 250W |
| Est. Price | $609.99 | $579.99 |