Architect's technical teardown: VRAM capacity, memory bandwidth, TDP, and AI throughput — compared head-to-head for local LLM workloads.
The legendary used-market GOAT. 24GB VRAM at a fraction of the cost of 4090/5090. Still handles 70B models with ease.
Reliable 16GB VRAM performer. Great for high-speed inference on mid-sized language models and large-scale image generation.
| Metric | NVIDIA GeForce RTX 3090 | NVIDIA GeForce RTX 4080 Super |
|---|---|---|
| VRAM | 24GB | 16GB |
| Memory Bandwidth | 936 GB/s | 736 GB/s |
| AI Throughput (TOPS) | 285 | 836 |
| TDP (Power Draw) | 350W | 320W |
| Est. Price | $749.99 | $879.99 |