GPU head-to-head · curated specs + live pool data
RTX 4090VSRTX 3080
The launch legend. Still very playable, just power-hungry by modern standards.
Full breakdown →Specifications
| RTX 4090 | RTX 3080 | |
|---|---|---|
| VRAM | 24 GB GDDR6X | 10 or 12 GB GDDR6X |
| Memory bus | 384-bit | 320/384-bit |
| TBP | 450 W | 320 W |
| PCIe | Gen 4 | Gen 4 |
| Local AI (Q4 fit) | 32B · ~113 tok/s @8B | 8B · ~85 tok/s @8B |
Live benchmark data
Not enough verified runs yet for a fair pool verdict — averages appear once each side has at least five.
Verdict — RTX 4090
If you already have one, keep it — it's still a top-tier card. If you're shopping used, weigh it against a new 5080; the used discount needs to be significant to justify the older architecture.
Verdict — RTX 3080
Great card in its era. If you have one, keep it — it's still perfectly capable. Newer cards match its performance at half the power draw.