the 45nm means the transistors in the CPU are 45 nanometers in size. This new technology cools better, uses less power, and has a large cache size for increased performance. They overclock like a dream too.
Look here for Sata 3.0 HDDs
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010150014+103550777 6+1035915133&name=SATA+3.0Gb%2fs