In Addition to that, the Albatron, and the Asus P4PE also have it. The Epox is supposed to have it according to the latest BIOS, but many people are having trouble getting it to work. I am using the setting on my Abit IT7 MAX and it is great. My Old Epox had a 4:5 and and 3:4, and there was a nice performance boost with the 3:4.