RT is a clown show for any config today.

That said, I just tested doom eternal maxed 1440p with RT FSR performance (not gonna lie this game scales well) and was getting 220~300fps depending on the scene even with observed recording at 240fps 60MBs native res on my 7900xt.

RT was the limiting factor by far though.

eh, raytracing isn’t worth the loss in FPS in my opinion… Though, I’m running a 2080ti, so I’m biased

Raytracing is generally slower on AMD than Nvidia to begin with, and RADV’s implementation is slower than its Windows counterpart. Nowadays, if you don’t have a 3080 or above equivalent, it isn’t worth enabling IMHO.

I’ve seen benchmarks saying that the Radeon 7900XTX is generally 10% slower than Nvidia 3090 on Windows, so expect that gap to widen on Linux.

Personally, I think it isn’t really worth enabling on AMD GPUs in Linux at the moment.

Not worth the performance loss but it does work perfectly fine.

The only game were RT is actually usable with lower end Radeons is FH5. I’m running FH5 at max settings, max RT, 1440p with +80 FPS.

I have a rx 6700 and ray tracing does work if your using mesa 23.2.1 or above especially mesa 23.3 will have another big boost in performance for ray tracing as valve devs have been working on it for a while. Idk what mesa version kubuntu uses so you would have to check that

But in general ray tracing isnt rlly worth it for a mid range card

1. The benefits of RT are not worth the hit on frame rate for any but the highest level cards.

2. Don’t use an Ubuntu distro it’s a server focused os meant mostly for servers. Use Fedora (or Nobara), a non-Manjaro Arch distro (Garuda, Arch, Bazzalt, EndeavourOS) or Suse Tumbleweed.

RDNA2 is inherently quite slow at ray tracing even on Windows, and on Linux the current state of RADV leaves it performing 30-50% slower than Windows. Speaking as a 6600 XT owner who experiments with ray tracing out of curiosity: you won’t actually be able to play any games with ray tracing, it simply doesn’t make any sense unless you like playing at 20 FPS.

As for support, if your distro has Mesa 23.2 then RT support will be enabled by default, and the performance gap will inevitably improve with more updates. But that GPU is never going to deliver playable RT performance in games.

rx 6650xt owner here, ray tracing isn’t worth it.

Control is the only game I’d describe as playable with RT.

Control 1080p high with medium RT (so only reflections RT) runs always under 60.

Ratchet and Clank: Rift Apart 1080p medium with RT reflections high (which is the minimum) and RT draw distance 1 (also minimum) I get between 20 and 30 fps.

Hogwarts Legacy 1080p medium with low RT reflections also ran like crap.

All this was tested on Arch Linux with the recent Mesa 23.2 which is the one that introduced RT by default and huge optimizations.

rx 6650xt is great for non-RT 1080p gaming and good enough for low-end 1440p gaming. You can get pretty much any game except Alan Wake 2 and Starfield to run at 1440p60 with medium or high settings, older games like War Thunder (max settings except MSAA) and GTA 5 (max settings except MSAA) run great at over 100fps except GTA 5 has some dips in traffic.

Overall I’d recommend 1080p high refresh rate for this GPU and you’ll have a great time with high settings, but if you for some reason have a bigger screen, the GPU runs 1440p60 fine with at least medium settings.

Been playing Metro Exodus EE yesterday on Ultra RT at 3440x1440 on an 7900xtx. 90fps avg and game looks mighty fine. Same does not uphold for all RT games though, Cyberpunk does not reach playable fps with RT enabled.

Raytracing is not worth it.
There are only 3 or 4 games, that look beautiful enough to compensate for
the performance hit.