I have few questions regarding SATA ll ,so thought why not post it here. 1. How much is the performance difference between a SATA and SATA ll 2. Can SATA ll hard disk be use on a motherboard that doesnt support it but supports just SATA 3. Which motherboards with 939 socket support SATA ll 4. Advice me a SATA ll hard disk and is it worth it?