I have a amd 955, and I do some mild overclocking just by changing the multiplier in bios. I set it back to stock setting and tried to run AMD overdrive's stability test and it fails with calculation error. I went to bios and set all of the settings to auto, but when I run Core temp, it shows my processing speeds as 200.86 x 16 so im assuming that not being 200 even is causing the problems, but everything ive tried has not changed it to an even 200. Please help!