Hard to say. Sabertooth X79 is Intel® X79 chipset, Z9PE-D8 WS is Intel® C602. I'd find some discussion with the same motherboardAny idea why this DSDT will keep the CPUo at 1.2GHz in Sierra on Sabertooth X79? The 3960x 6-core worked great. But I got the 16 threads error on upgrading to E5 1680 v2. I was able to boot with the DSDT in first post - but the CPU is limited to 1.2GHz.