Ray tracing is obviously out of the question at 4K, so we're only looking at standard gaming performance. With 45 fps across our test suite, the 6750 XT delivered playable results, with Warhammer 3 being the only game to come up well short of the 30 fps mark. Forza Horizon 5 also nearly averaged 60 fps, but 4K doesn't do AMD's Infinity Cache any favors, and nearly every game now ran equal to or faster than the 6750 XT on Nvidia's competing RTX 3070. There's not much to add, with performance mostly mirroring what we saw at 1440p, just with much lower framerates.
If you're serious about taking on 4K gaming, you can use RSR — Radeon Super Resolution — to apply a universal upscaling algorithm to all games. It's comparable to NIS (Nvidia Image Sharpening), and while it generally doesn't look as good as native, upscaling 1440p to 4K delivers a far better experience on these high-end GPUs than trying to do 4K native. RSR is also relatively lightweight, meaning upscaling 1440p to 4K only ends up being a few percent slower than running 1440p, and some may find the resulting output to be more pleasing than native 1440p (especially on a 4K display).
FSR or DLSS still result in better upscaling quality in general, just because those require game integration and can render the HUD and text at native resolution and only apply upscaling to areas of the game where a few artifacts won't be as noticeable. But FSR and DLSS require work on the part of the game developers, whereas RSR and NIS are a cheap and "free" solutions for virtually all games.
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