I'm no smarty pants, but I noticed the latency and seek times for the 10k RPM hard drives are just shy of half of what the 7200 RPM ones are. Now, I'm not sure of what the actual performance boost is of running RAID 0..... but in theory it should be about double the speed. (Two drives, each taking half the data) So why spend out the wazoo for a 10k RPM HDD when you could just buy two 7,200RPM ones and run them in RAID 0? You'll pay less and get more storage. Hell... you could probably run three 7,200 RPM drives in RAID 0 for the $140 a 10k drives costs.