Some information to start:
Intel Core i5-2500k Sandy Bridge (3.3/3.7GHz)
Gigabyte GA-Z68XP-UD3 Motherboard
8gb DDR3-1600 Memory
Windows 7 Professional x64
Two users requested that I save their information off of one SATA drive onto their external backup drives. Both external drives were USB 3 Seagate Backup Plus Slim's. I at least remember the main one was a 1TB drive. That users' SATA drive was a Seagate Barracuda 7200rpm 750gb drive from an eMachines computer.
The first setup I didn't notice much of the speeds, but when I began trying to copy the second users information I knew there was a problem. I was trying to copy approximately 86gb worth of data, mostly photographs organized into folders, from the SATA drive to their backup drive. The transfer rate on average was 20mb/s. I began researching this issue and had seen that USB 3 is very heavily dependent on the drivers that you use.
I first started by updating the drivers for my USB 3 bus, since they hadn't been used in forever.I believe the Gigabyte board uses ETron drivers? So I downloaded those, applied, restarted and didn't see a difference. I then finally went ahead and updated my BIOS to their F10 version, which even indicates USB3 speed increase... that didn't help out at all.
Can you guys help me figure out what's missing, or if this is really what the speed is supposed to be? I'll answer all questions I possibly can.