Hi i have an amd dual core processor, 2gb of ram 1 667 stick and 1 466, and i have an 8800gs alpha dog edition made by xfx 384 mb ddr3 memory, this should run call of duty4 fine, ive seen computers with specs like mine run it fine, but for some reason i get 25fps and lower, im also using a good 700 watt psu, and im thinking of upgrading to a gtx 260, but i dont even really play at high resolutions so would there be any point? , i think my computers just not doing something right, maybe the mobo..