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 Blackwell prosumer sweet spot. GDDR7 bandwidth delivers exceptional tokens-per-second for 30B+ parameter models in a single-GPU configuration.
| Metric | NVIDIA GeForce RTX 4090 | NVIDIA GeForce RTX 5080 |
|---|---|---|
| VRAM | 24GB | 16GB |
| Memory Bandwidth | 1008 GB/s | 960 GB/s |
| AI Throughput (TOPS) | 1321 | 1801 |
| TDP (Power Draw) | 450W | 360W |
| Est. Price | $1,799.00 | $1,349.99 |