I built it in 2010. it's an intel core i7 2.80 Ghz. One of the case fans has died, so I have to replace it. I also have to increase the RAM. I only have 4 gigs. It used to be fine enough until a couple of years ago, then all my usual software suddenly required more power for 4K compatibility, and then sharing screens on ZOOM, etc.
I'm not in a position to buy a new processor, MOBO, + graphics card at the moment, and certainly not at the high price point I paid for components when I built my computer 10 years ago. So I just have to replace the fan and get more RAM.