Western Digital Raptor 74 GB
 

Results speak enough. If we have to summarize – the 74GB Raptor is the fastest SerialATA drive available at the moment and it’s targeted to PC enthusiasts and gamers. A RAID 0 array with two of these babes is one of the fastest solutions, that you can buy, if you don’t mind the fact that stripe arrays are not very secure and you take the risk at your own.

http://www.hwspirit.com/reviews.php?read=1