processor : amd phenom II X4 840
gpu: sapphire radeon HD 5670 1GB GDDR5
ram: 3 gb ddr2
and how much fps can i get at high settings ?
Far from being able to run GTA IV at high settings on that machine... Medium at best, but it will all depends the resolution you're playing at; on my system, high details, at 1080p, I am getting around 40-45 FPS, but it's sometimes dipping to 35-37 FPS as well.