AMD's RX 7900 XTX is 10% slower on average versus RTX 4090 according to extrapolated preliminary graphs
The performance metrics presented by AMD during the official launch appeared a bit cryptic, but Linus and twitter user Lock Gamer extrapolated the AMD estimates with actual RTX 4090 results and it looks like the RX 7900 XTX is only 10% slower than Nvidia's top dog. Not too shabby when we also factor in the 60% lower prices for the AMD card.
Source: notebookcheck.net