They are also decidedly mid-range. I'm still using my 4830 which cost me less than $100 when new. The 4500s must have been around $60, and you don't get much out of cards selling for that price.
If you're mostly playing older games, it should be fine, but probably not anything released within the last year. I know I can't play any games in that time frame. I'm just waiting for Skylake to but a new system together, including a modern video card.