Well that is a good short cable. Are you on the front or rear ports?
I ask this again, because USB 3 is on of those picky things.
most 2.5 inch drives at 1tb should be good for at least 70-90 megabytes over at least the first half of the drive.
I would recommend trying it on another system(and another cable if you can, i know not everyone has a cable to spare) if you can, just to rule out the drive it self or cable. USB 3 still seems to have some bugs to be worked out.
CrystalDiskMark or HD tune are also good ways to see how fast a drive is running(it kind of removes windows file transfers from the equation), it is moves solid on HD Tune(30 from end to end), then yeah something in the interface is stopping it(most likely it is connecting as USB 2.0).