You should be fine for gaming if you just toss a 2GB gtx760 (around $180) in there. Make sure you have 8gb of ram(around $70), if not, upgrade there too. Then you should be good for gaming for a while longer. Your cpu and motherboard would be the things you should think about upgrading in the next 2 or so years. So for around $250 you could have a decent gaming pc. Sounds like that would be the cheaper route. Even if you upgraded your motherboard and cpu, with an H series board and an i3 4130, you would be looking at a total of around $430 which is barely above the cost of a PS4. Games on PC are much cheaper because of the constant sales and you'll have a much better productivity device too. And both ps4 and xbox 360 and one controllers work on the pc.