So I'm trying to overclock my 875k, and it was doing fine at 1.34750 volts, pulling in about 47 stable GFlops. Bam BSOD. I figure it's a voltage problem so I go to the BIOS and kick up the vcore one notch up to 1.35000. I run Linx again but the time increased by a considerable bit, and the GFlops decreased to 37. I changed nothing except the vCore, and not even by much and I get less GFlops. Why?