My current "fast" desktop hosts an AMD Ryzen... 5 1400. First-gen chip. And a mismatched 20GB of RAM. In a shoddy case assembledby someone else with what I suspect is terrible airflow.
Fortunately AMD is pretty awesome and my motherboard supports up to the 5000 series chips after updating the BIOS to the latest revision. So I'm thinking of upgrading to a 5800X when my tax return comes through. Would also be a good time to effectively rebuild the entire machine. It's an mATX mobo in an absurdly oversized full ATX Cooler Master case. I'm not a Gamer by any means so I found a relatively cheap mATX case on Newegg for about $45 that has everything I want (USB and audio on the front, two 5.25" bays).
From there I'll find matching RAM to bring the system up to 32GB, get some nice Noctua fans, and perhaps a fancy Pioneer internal blu-ray drive - they've got some new models out that I can only describe as Sexy.
Oh the motherboard also has an M.2 slot that's been entirely unpopulated the entire time I've owned it, maybe I could do something about that.
I may also need a new power supply to run all this, depending.
Not upgrading the GPU though, yes it's a GTX 760 but I've never once installed a Video Game on this machine and run all my encodes entirely on the CPU. May do so in the future if I ever get into 4K ripping, but that's not something I'm concerned about right now.