Hmm. I purchased Acronis True Image and it's taking 15-18 hours to clone the drive over that USB3 cable (and this is with the system rebooted into Acronis). Whereas backing up the computers data files (the bulk of the contents except the os) onto a usb3 Winchester sata drive *while I was using the computer* took only a couple hours yesterday.

So I think there is something wrong with the drive, the cable, or Acronis.

Maybe I should have just used the Samsung software that came with the drive.