RTX 3090 24GB vs RTX 4080
A used RTX 3090 24GB sells for a median $1,629 and an RTX 4080 for $1,100 on US eBay, so the RTX 3090 24GB costs 48% more. In games the RTX 4080 is about 39% faster. It is also the better value per dollar. For local AI the RTX 3090 24GB has 24GB of VRAM versus 16GB, enough for 32B models instead of 14B ones at 4-bit. Prices as of 2026-11-12.
RTX 3090 24GBTypically $1,629 used
Buy $1,000RTX 4080Typically $1,100 used
Buy $1,099Buy It Now from US sellers. We may earn a commission; it never changes the price.
| RTX 3090 24GB | RTX 4080 | |
|---|---|---|
| Sold median | $1,629 | $1,100 |
| Typical range | $1,555–$1,699 | $1,047–$1,168 |
| Sales, last 14–30 days | 249 | 48 |
| Past week | Up 2% | Up 6% |
| VRAM | 24GB | 16GB |
| Runs at 4-bit | 32B models | 14B models |
| Gaming speed (4070 = 100) | 108 | 150 |
| Board power | 350W | 320W |
| $ per speed point | $15 | $7 |
| $ per GB VRAM | $68 | $69 |
Gaming speed is relative 1440p performance from public review averages, for ranking only. Prices are US eBay sold medians with shipping, updated daily, last on 2026-11-12.