Tried to OC now can get into OS. in Overclocking and Cooling Posted November 22, 2006 The problem I am having is I can't get the ram to run at 250MHZ it shows up in the bios as DDR400. When I check in the bios I only see settings up to 233MHZ. How can I get this up to 250. Some of the people in another thread were trying to help me but I just couldn't get it. I have read the "THE" Definitive DFI AMD Overclocking guide! a couple of times and am still reading it as well as the one over at the MSI forums by Kingfisher and the one at XtremeSystems Forums.