My current one is video gaming. I want to move into fixing up old.cars and some woodworking and maybe upholstery. Wife brings home old **** all the time - why not fix it up like new.
I don't want to say it, but try craigslist.:doh:
Most folks want what they paid for in parts 3 years ago for the computer now. I have seen a few cheap AMD builds recently though.
What games are you trying to play? What screen resolution? That should determine your budget for CPU and GFX card...