I have a 13" Aluminum (non-Pro) MacBook which came with a 250GB 5400RPM hard drive. I'm considering an upgrade to a 500GB 7200RPM drive. I'm assuming that any 2.5" SATA drive should work but I have a few concerns. 1) Heat dissipation. I understand 7200RPM drives create slightly more heat than the slower 5400RPM drives. I don't recall a 7200RPM drive being an option when I custom ordered my MacBook. Could the 7200RPM drive create too much heat and cause any potential damage to my beloved MacBook? 2) Transferring data. Would this be as simple as plugging in the new drive, connecting my time machine and letting it restore? 3) AppleCare. I have about 2-years left on my AppleCare agmt. Would this upgrade void the warranty? Thank You in advance for your valued advice and opinions.