RTX 4090 vs RX 6900 XT
Full specification comparison between the NVIDIA GeForce RTX 4090 (2022) and the AMD Radeon RX 6900 XT (2020).
RTX 4090
NVIDIA Enthusiast
- ✓ ~79% faster on average
- ✓ More VRAM (24 GB vs 16 GB)
- ✓ Wider memory bus (384-bit vs 256-bit)
- ✓ Newer (2022 vs 2020)
- ✓ Better performance per dollar
RX 6900 XT
AMD High-end
- ✓ Lower power draw (300 W vs 450 W)
- ✓ Cheaper at launch ($999 vs $1599)
Verdict: The RTX 4090 is roughly 79% faster than the RX 6900 XT on average — a clear, noticeable performance advantage.
The RTX 4090 also carries more video memory (24 GB vs 16 GB), which matters for high-resolution textures, modern AAA titles and future-proofing.
At launch pricing, the RTX 4090 offers more performance per dollar, and the RTX 4090 is the more power-efficient chip.
Estimated performance
Estimated average 1440p raster gaming performance compiled from publicly available benchmark data. Individual games vary.
Specs side by side
| Specification | RTX 4090 | RX 6900 XT |
|---|---|---|
| Architecture | Ada Lovelace | RDNA 2 |
| Release year | 2022 | 2020 |
| Est. performance | ||
| Shading units | ||
| Boost clock | ||
| FP32 compute | ||
| VRAM | ||
| Memory type | GDDR6X | GDDR6 |
| Memory bus | ||
| Board power | ||
| Launch MSRP |
Green bars mark the better value in each row (for power and price, lower wins).
Frequently asked questions
Is the RTX 4090 better than the RX 6900 XT?
Yes — based on aggregated benchmark data, the RTX 4090 is about 79% faster than the RX 6900 XT on average.
How much faster is the RTX 4090 than the RX 6900 XT?
Roughly 79% on average in raster gaming workloads. The gap varies by title, resolution and settings.
Which graphics card is better value?
Comparing launch prices, the RTX 4090 delivers more performance per dollar. Check current street prices, as market pricing often shifts the value equation.