They were probably figuring for super SSD drives to surpass mechanical drives. And thats why mechanical drives, show little difference between each other. I think the windows experience index is figuring for 200mbs + or twice that, who knows. And then of course there are Raid arrays! But in the near future, one SSD will surpass Raids of mechanical drives! The windows experience index, probably wont last long beyond windows 7 release. With a mere Ceiling of 7.9, it will be breached Quickly. In which new tools will be produced. It is simply produced for the laymen though. To assist in their upgrading efforts.