The Inq has a good write-up on "SuperSpeed" USB 3.0, what makes it different from 2.0 (besides the speed - CPU overhead, anyone?), & when we can expect to see it. Good stuff.

"4.8 Gbps minus polling overhead and so on - well we could get some 300 MB/s net speed out of such thingie - let's say a large external parallel Flash-based SSD drive here."