Architect's technical teardown: VRAM capacity, memory bandwidth, TDP, and AI throughput — compared head-to-head for local LLM workloads.
The previous generation's king. 24GB VRAM and high CUDA counts remain the industry standard for consumer AI development.
The legendary used-market GOAT. 24GB VRAM at a fraction of the cost of 4090/5090. Still handles 70B models with ease.
| Metric | NVIDIA GeForce RTX 4090 | NVIDIA GeForce RTX 3090 |
|---|---|---|
| VRAM | 24GB | 24GB |
| Memory Bandwidth | 1008 GB/s | 936 GB/s |
| AI Throughput (TOPS) | 1321 | 285 |
| TDP (Power Draw) | 450W | 350W |
| Est. Price | $1,799.00 | $749.99 |