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He tested 17 games. In all games running VKD3D the XTX outperforms the 4080 Super by about 10-20% per game as expected with Raster only. He tested one game running DXVK and one native game and they both favored the 4080 Super.
When enabling Ray Tracing there was a clear advantage for the 4080 Super with generally higher average FPS. A common symptom however with VKD3D is lower 1% and 0.1% lows on the 4080 Super. Even if the average FPS is higher.
I just saw this reply now and wanted to tell you a bit of my experience as it doesn’t sound too far off from my own!
I think that move will work out nicely. I’ve been on a 5800X3D + 6800XT for a while now and completely switched to Linux for pretty much all gaming and desktop use 18 months ago. My experience with arch based distros running KDE Plasma has been virtually flawless.
I decided now before the new AMD cards are coming out to get my hands on a RTX 4080 Super just to see how far Nvidia on Linux has come before I make a decision in March on what vendor to go with.
I can confidently say both Nvidia and AMD run my setup (1x 2160p @ 120hz, 1x 2160p @ 240hz, 1x 1440p @ 120hz) in KDE Plasma without any problems at all in desktop use. But modern DirectX12 games will perform slightly better on AMD for the time being until Nvidia does something about their drivers on Linux.
So no matter what direction you are looking in the future I think right now is a super good time to make the switch to Linux!