I recently purchased a western digital caviar black, as my old hard drive was only 5,000rpm sata II. My current motherboard only has a sata II bus, but i have a sata III motherboard hanging about (don't ask). I have heard that hard drives cant all take advantage of the capabilities of sata III, but i know that my drive is very fast. I was wondering whether i should install the sata III motherboard or simply use the sata II slots of my current MB. My windows license is an OEM version, so if i replace my motherboard (the Sata III one is better) i will have to repurchase windows, but i was considering upgrading to windows 8 anyway. Please help!