My deepest apologies (especially the ones who will care too much) if this subject has been started already... but mistakes happen. If this thread has been started already and there is a link to prove it, please point me in the direction if you wouldn't mind and then do whatever you want to the thread. Anyway... my question is this: does the 7200 RPM drives eat a lot more battery life then the 5400 RPM drives? I was thinking of upgrading my mbp to a 320GB Seagate HD @ 7200 RPM's. I heard that it really boosts performance, if anyone has proof that it does not, I would appreciate to know the truth! Thanks in advance, especially to those who will easily forgive me for posting a topic already started somewhere in the sands of time.