Toms Hardware Yet Gigabyte managed to edge out its rival in write performance by taking its 5.0 Gb/s pathway directly from the CPU, eliminating any middle parts (like the DMI interface connecting Core i7 to P55) that could slow the interface down… http://www.tomshardware.com/reviews/usb-3.0-performance,2490-7.html
Mad Shrimps Another Gigabyte innovation is the increased stability for USB power. At 4.65V or lower, an USB device will stop functioning so,
with the necessity of more stability due to the higher transfer rates, Gigabyte did the necessary to ensure full stability. http://www.madshrimps.be/?action=getarticle&number=2&artpage=4377&articID=971
Overclockers
Gigabyte decided not to stop there. Why not allow users even more flexibility and provide the current they really need? So every
P55A board with SSUSB technology will be capable of supplying a whopping 1500mA (1.5A) to each SSUSB device! http://www.overclockers.com/usb-30-testing-gigabyte-ud3r-ud6/
Bjorn3D
Gigabyte has implemented the SATA 3 and USB 3.0 interfaces P55 platform wide and made it easily and inexpensively available earlier
in the game than any previous evolution of new interfaces we've ever seen.
http://www.bjorn3d.com/read.php?cID=1746&pageID=8114