

I just replaced that exact card in my machine last week in preparation for dual booting Linux for the first time (I needed a new NVME as a Linux drive and figured I’d future-proof my setup at the same time with an RX 9070 XT for the native AMD drivers), and the only games that I hadn’t been able to run on medium-high settings had been unoptimized games, bad ports, and early access stuff like Monster Hunter: Wilds and Cities Skylines 2.
IMO 8 gigs is plenty for the average person, all things considered.









A desktop environment is just a GUI program that your computer boots into by default. SteamOS just boots into Steam Big Screen Mode by default instead, and you can launch into the desktop afterwards. Plasma is the program that Valve chose to use for their desktop environment.
If you wanted to, you could skip all this entirely and launch your games or programs directly from the terminal without ever loading into your desktop.