Well, I've just bought a graphic card ATI HD 6570 2 GB memory, But it didn't boost my gaming performance or quality, so I've decided to
buy a new mother board and CPU, what do you suggest me to buy?
( I can't buy a core i7 cpu cause it's expensive for me)
I am a gamer and I want to play games like GTA IV, Sims 3 with expansions, Blur, etc.
(my current system is: cpu Intel core 2 Duo, 5 GB available ram, Gigabyte p35 Motherboard and my gaming performance and quality is not satisfying.)
That budget is more than enough for a good system.
I would suggest something like this:
CPU: i3 2100k with aftermarket cooler. Hyper 212 for instance
MB: Any motherboard that uses Z68 chipset. Take your pick on the brand
GPU: 6850 once again take your pick on the brand
PSU: Corsair TX550
RAM: 2x4GB DDR3 1333mhz. Get Corsair or Gskill if possible
Sorry that I didn't provide links. Internet is freaking slow today
I differ in my opinion from akxpckwb in what you should get. I think you should keep your graphic card and upgrade it only after upgrading the cpu, motherboard (MB), and RAM, only if the cpu/mb/ram upgrade by themselves aren't enough to satisfy you.