Can anyone tell the difference between USB 3.0 and 2.0?

I have both a 8GB flashdrive 3.0 and 2.0. I got the 3.0 at office depot for $8.00 and 2.0 for the same price at best buy. I honestly can't tell the difference between the two. They both seem to be the same in speed. Is there really a difference?

This is an interesting subject, I just recalled a MacWorld podcast I was listening to when the 3.0s were first hitting the market. A guest on the podcast was saying to think of it like a 'bottle neck' not so much as speed. With the 3.0 you can push more information through at any one time. So in the case of the hd movie senario, if you had multiple movies transfering at one time the 3.0 would be a lot faster than a 2.0.

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