If you have wondered why hard drives always seem to have a revision number in their names, (i.e. Seagate Barracuda 7200.10) Tech ARP has gathered together a review that will show you what is so important.  They have taken three Barracuda 7200 of sequential revision and compared them.  You can see just what changes, and why it is worth the extra effort to get the newest model you can find.  They also added two mobile Seagate drives for comparison.

“WinBench 99 2.0 has proven that it can still serve as a consistent and reliable hard drive benchmark even in Windows Vista. It has given us a lot of interesting data. If the Business and High-End simulations were not good enough, the raw transfer rate results were certainly most useful. From the transfer rate results, you can see which hard drive has a higher transfer rate, and how areal density affects that performance metric. It also shot down the perception that a newer model is always faster.”

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