A GPU that will play anything at max settings (1080p) for 5 to 10 years will be most of your budget by itself.
A system with an i5 and a gtx 970 will set you back around 550 just for those 2 components, unless you buy used gear.
Unfortunately it is pretty expensive if you really want a decent gaming pc, but you would be surprised how little difference there is between max and medium settings in most games.







