RX 6800 XT vs RTX 3080: Which Should You Buy?
Head-to-head on performance, VRAM, power and value for 2026.
Quick Summary · TL;DR
On our relative performance index the RX 6800 XT leads the RTX 3080 by about 11% — a moderate gap. The RX 6800 XT has more VRAM (16GB vs 10GB), which helps at high resolutions and in VRAM-hungry titles. The RTX 3080 adds NVIDIA DLSS and stronger ray tracing, while the RX 6800 XT typically leans on raw rasterisation value.
| RX 6800 XT | RTX 3080 | |
|---|---|---|
| Performance index | 62/100 | 56/100 |
| VRAM | 16GB | 10GB |
| Board power (TBP) | 300W | 320W |
| Recommended PSU | 750W | 750W |
| Power connector | 8-pin PCIe | 8-pin PCIe |
| Generation | RX 6000 | RTX 30 |
Relative gaming index — an estimate of typical performance. Real-world gaps vary by game, resolution and settings.
Which should you buy?
Buy the RX 6800 XT if you want the higher frame rate and can find it at a fair price. Choose the RTX 3080 if it is clearly cheaper and its 10GB+ of VRAM and features cover your target resolution. For ray tracing and DLSS, the NVIDIA option has the edge; for raw rasterisation per dollar, the alternative often wins.
Power planning: RX 6800 XT PSU · RTX 3080 PSU.
Frequently asked questions
Is the RX 6800 XT better than the RTX 3080?
On our relative index the RX 6800 XT is about 11% ahead of the RTX 3080. The RX 6800 XT has more VRAM (16GB vs 10GB), which helps at high resolutions and in VRAM-hungry titles. The smaller the gap, the more other factors like price, VRAM and features should decide it.
Which is better value, the RX 6800 XT or the RTX 3080?
Value depends on the price you can find each at. The slower card is usually the smart buy if it is meaningfully cheaper, unless you need the extra VRAM or features of the faster one.
Do the RX 6800 XT and RTX 3080 need different power supplies?
The RX 6800 XT is rated around a 750W PSU and the RTX 3080 around 750W. Size for the more demanding card if you might upgrade, and prefer an ATX 3.x unit for any 12V-2x6 card.
Make sure your CPU can keep up with either card using the Bottleneck Estimator, or compare more cards in the GPU comparison hub.