I ordered a Ryzen 5 5600X. It should be here in the next week. I haven't chosen a motherboard yet. I need to learn more. The GPU will be the last thing I order. Those are expensive!
Big Red update: I took out all the fans and have new ones arriving tomorrow. Then put in all new ram, 4 sticks of 2 gigs each. Also took out an old CD drive. One cool thing I did was install a little USB 3.0 card with two ports and attached the USB 3.0 cable from the case to it. So now I will have 4 working USB 3.0 ports. The RAM and the USB card were purchased a couple of years ago. I was pretty sick in those days, so I never got much done. I may flash the bios too. I need to learn a bit more on that.
The motherboard on Big Red has an error code, FF. I know that is bad. I read where it probably is a component. If what I have done doesn't fix it, and it probably won't, I'll use Big Red for the new build. Would save some bucks. Hopefully I can also use the power supply.