I have the K7T Turbo with a Duron 600 and it will only do 650 Mhz. The same CPU on the ASUS A7V will run 900 Mhz with no voltage increases and an operating tempreture of 43 C. I have flashed my MSI K7T with the over clockers bios and I am since unable ot o/c my Duron 600. I think it's an issue with the board it self or the BIOS. Don't go pulling your hair out. Sometimes, all things aren't what they appear to be.