I have a Sempon socket 754 (1.6 Ghz) and a clawhammer socket 754 (2.2 Ghz). The sempron can run two one gig sticks at DDR400 and passes memtest fine. The faster Clawhammer runs the same sticks with errors at memtest #5 at the very end on two different motherboards. I am well aware of the problems with the socket 754 running anything bigger than 1 gig, but since one can do it, I am wondering if I stand a better chance at getting a 754 Venice core? It is supposed to have a better memory controller and since my clawhammer is an older generation (the first that came out) perhaps later cores are better. I don't OC. I just want to run 2 Gigs at 1T @ DDR400. any suggestions? I want to stick with socket 743 because in time I will just move to DDRII.