Thanks for the reply. I think I'll be going with the 5365's as I want to get the most performance out of this machine as possible. As per it giving up the ghost; I got a SquareTrade 2 Year Warranty on it that covers the cost of the entire machine, so that isn't a concern for me. And I doubt it'll void the warranty as they'll likely never know, and if it fails, I highly doubt it'll be because of the processor upgrades, right?