Hi all, as the title suggests I am wondering if a Core 2 Extreme QX9775 would work in a 2008, 3,1. According to this thread, any CPU with an SLA sSPec should work. The QX9775 is an SLA. The QX9775 seems to be identical to a X5482 Xeon, except it has an unlocked multiplier. Which leads me to the next question: Assuming the QX9775 works, would the Mac Pro's EFI allow me to overclock it? It would probably be possible under Windows either way, but it would be nice for the entire machine if I could set the variables manually in the EFI. I currently have a dual e5462 2.8Ghz Mac Pro, so overclock or not 3.2Ghz would be a nice little jump.