I picked up a Lacie USB 3.0 external drive and am testing it out a bit. Transferring a 69GB folder is running about 18 minutes (About 45MB/Second). Is it me, or does this not seem all that...well...blazing?
Dell XPS9100, Win7 64-bit, Core i7 3.2GHz, 24GB RAM
That's about right. Go ahead and do the same transfer via USB 2.0 and you'll get roughly half the rate / double the time.
Spec says USB 3.0 is 10x faster than USB 2.0 but when tested, you'll get 2-3x faster (real world) depending on number of files and file size. Even with USB 2.0 you don't get close to spec performance: rated at 480Mbps but typically 150-170Mbps real world.