Would adding more RAM make that much of a difference? I've got the standard 4GB in the 2011 27" iMac. Would adding another 4GB make much of a noticeable boost? Also, it to me a while to find a definitive answer on Boot Camp booting from an external drive. So I thought I'd post to say it can be done and fairly easily. Found it on the forum so, wasn't my idea! I cloned the bootcamp drive with Winclone (Also used Winclone to shrink the drive as it was 100GB and my SSD is only 128GB) Booted into windows so the thunderbolt drivers were installed (not sure if this was needed) Formatted the internal drive so there was no OS X or bootcamp. Partitioned the SSD Wincloned the original bootcamp drive to the SSD. Rebooted into windows (it did a diskcheck when booting the first time) And done!