HI have a 2011 27" iMac which I'm attempting to make run faster by using an external SSD boot drive (La Cie little big drive). Installation went smoothly using CCC. When I tested speed using Black magic I don't seem to get any higher than 90 MBps read 85 Mbps Write. I know it should be much faster than that. Any suggestions? This is connected via Thunderbolt. Please let me know any other info you may need to help rectify this. Thanks much everyone!