RTX 3080 10GB vs RX 6800 XT
A used RTX 3080 10GB sells for a median $420 and an RX 6800 XT for $440 on US eBay, so the RX 6800 XT costs 5% more. In games they are about even, so the RTX 3080 10GB is the better buy. For local AI the RX 6800 XT has 16GB of VRAM versus 10GB, enough for 14B models instead of 8B ones at 4-bit. Prices as of 2026-10-31.
| RTX 3080 10GB | RX 6800 XT | |
|---|---|---|
| Sold median | $420 | $440 |
| Typical range | $400–$450 | $419–$450 |
| Sales, last 14–30 days | 192 | 46 |
| Past week | Up 2% | Up 2% |
| VRAM | 10GB | 16GB |
| Runs at 4-bit | 8B models | 14B models |
| Gaming speed (4070 = 100) | 93 | 95 |
| Board power | 320W | 300W |
| $ per speed point | $5 | $5 |
| $ per GB VRAM | $42 | $28 |
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 2026-10-31.