While I have not run the number I KNOW with absolutely no doubt that my raptor is 50-100% faster than the 250gb seagate and the 400Gb Caviar that have been in my system. I alt-F4 out of WOW all the time, and will beat my friends back in by up to 10s. OS boot time again, not even close. (74Gb raptor, I install the games that I really care about speed to the raptor).