I just recently (a year ago) pulled my Phenom II x6 out of the old AT case to put in a Dell ATX, and bought a modern power-supply-on-bottom ATX case from Montech for like $100 because it had 6 RGB case fans preinstalled with a glass side panel. I gave the Phenom II x6 to my daughter with a 970 GTX, and got a cheap X570 motherboard and Ryzen 5 3600x to throw in the case. Cost me about $300 all said and done, because I already had all the rest of the stuff. A friend from the local hackerspace gave me his "old" 3060 12gb, because he was upgrading to a 4090, and I couldn't be happier. I feel like royalty rn even though I know it's not the best machine out there, lol

But the RGB button stays off. And I use a BRICK of an air cooler, it's like a knockoff Noctua D12