I have the same questions, but I'm going to frame it differently. I have a stock x51 r2, but I want to upgrade to a 1080. How much of my X51 can I mothball for use in a new computer? I don't really have issues with the rest of it (though I wouldn't say no to a second HDD). I know I have to replace the power supply, but how do I go about figuring out which supply to get? Does it depend on what new case I get (like, do I choose the case first and then pick the power supply, or go the other way around)? I don't care at all about the lighting effects on the case. Thanks for any thoughts!