Have you actually tried? You sound like you're used to Windows where if you change a single piece of hardware the whole OS goes to pieces and needs to be re-installed or go through a painful process of driver searching. Considering I can (and have) literally moved hard drives between vastly different generation machines (granted, they were the same architecture), I don't think it's that far fetched to imagine Linux might actually resume from a hibernate with no issues on different machines. I've got some spare time this weekend, and I might just have to test this theory. Even if it doesn't work out, my experience with swapping hardware in Linux leads me to believe it wouldn't be that hard to add support for resuming from hibernate on different hardware. Sounds like a good college senior CS project to me.