I've just got hold of a quicksilver 933mhz CPU to upgrade my G4 DA but it has no heatsink. I could modify my existing heatsink but that would involve hacking about 1" off the side. I was wondering if i could use a PC heatsink & fan as an alternative as I have a couple lying around? If so, what's the equivilent compatible PC processor speed that it needs to be able to cool? (i.e. I have a heatsink that will cool an AMD chip up to 1ghz) I hope I've explained that clearly!