Well, i decided to buy a graphics card and founded radeon hd 6670 ddr5 suit my budget. I have a core 2 duo e7400 processor,4 gb ram. I won't be changing the processor but i will change my motherboard and PSU. I want to play GTA 5 in high settings when it comes out, so will 6670 be able to handle it? Also I can raise up the budget and add 60-65$ if you suggest me a better card. But till now hd 6670 is best choice.