jfg wrote:SSD's should be plugged into the lowest SATA port on your motherboard, usually port 0. Sometimes your motherboard will have certain ports marked for SSD. You could try checking that.
I've tried both types of SATA ports on my motherboard (3Gb/s and 6Gb/s) and it seems to perform the same no matter which port the SSD is plugged into. Originally, I had the SSD in Port 0 and the 1TB in Port 1.