I went from a p4 3Ghz, 512MB pc3200 and an x700 pro AGP to a p4 3Ghz, 1GB ram, and an x1950 pro, and my 3dmark05 score went from about 2500 to 4500. After upgrading to my current system, at stock I got 8500 3dmarks, and after a moderate overclock, i'm at 10,000...I recommend you get the Asrock motherboard and a cheap C2D like the e2160...you'll be amazed...