Hi I have a 2x Dual Core 2.66Ghz Mac Pro 1,1. I'm currently ripping my whole DVD collection, and would benefit from more processing power with Handbrake. Would a pair of Xeon E5330 processors work in it? Basically the main differences are the FSB at 1066 (vs 1333) and the voltage. I guess I'd have to put the insulating tape on the corresponding pin, as per the instructions on o0o.it. Any stability issues to be expected?