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Message: <blockquote data-quote="monkeywhistle" data-source="post: 993739" data-attributes="member: 142691">Seems like I've been waiting on the i5/i7 refresh forever now, but since there is absolutely no hints from Apple as to when (and if) this refresh will ever happen, I am close to submitting and getting the core 2.Concerning the hard drive speed.  I am trying to get an idea of which hard drive speed to choose.  The only 2 variables is the performance versus battery life.  Based on my usage (which is just simple home use, nothing too demanding), can anyone help me to determine the thresh-hold between the speed gained from going 5200rpm to 7200rpm versus the battery life lost?  Obviously the faster HD is more appealing, but how much battery time would I loose?  The computer is a 15" MBP 2.8ghz.  Thank you.</blockquote>