My desktop PC motherboard just support up to SATA II. You know I have a SATA III SSD drive. I would like to see more improvement on speed. The specs of my PC: Mobo: MSI A55M-P33 CPU: AMD A8-3870K Memory: 8GB DDR3 SSD: Crucial MX100 256GB SSD Windows 7 64bit Ultimate SATA II is 3Gbits/s