I haven't upgraded my PC in a long time and I've always been very frugal when it comes to getting PC parts. While I don't think I'll need to upgrade for some time still, I'm curious what y'alls opinion would be on a relatively cheap ($300>) upgrade would be, if one exists at all. Preferably AMD but I've heard linux support for Nvidia has improved quite a bit since I last had one.

Thanks to @B0NK3RS@lazysoci.al I realize it would help if I shared the rest of my specs: an MSI AM4 motherboard (I don’t have the model but I believe it’s a B450 or B550 tomahawk), 24 gigs of ram, and a Ryzen 3600 X cpu.