Ive just caome home with a 2TB USB 3.0 hard drive (Segate GoFlex Desk Freeagent) and am only getting bout 59mb/s copy speeds!!! ive plugged it into a USB 3.0 socket in my pc, and have just gotten the latest usb drivers...
I assume you're copying files from your internal drive to the external drive. When you copy files from one drive to another the transfer speed is limited to the slowest of:
- the drive you're copying from
- the drive you're copying to
- the connection between them.
USB 3.0 won't be a bottleneck in this case. You're clearly able to get USB 3.0 speeds because 59MByte/sec is higher than USB 2.0 is capable of (in real-world use). So there's no reason the transfer rate over the connection couldn't be higher.
A new 2TB drive should accept data faster than that unless it's a green drive or unless it's nearly full (which would probably mean you're using the slower innermost part of the drive).
Which probably leaves your internal drive as being the bottleneck.