In most respects the six-core AMD Phenom II X6 1090T 'Thuban' processor builds upon the established Phenom II X2/X4 'Deneb' architecture AMD has put to work for some time now. Looking under the hood most AMD users will see familiar specs such as 6MB of shared L3 cache and 512KB of L2 cache for each of its six cores. The Phenom II's multi-core design promotes a larger L3 cache that feeds faster L2 caches for the individual cores, a balance that improves multi-threading performance overall.
By now the world should know that the power supply is one of the most important parts of a PC, and you want to make sure you pick a quality unit. There are several things to look for in a PSU such as power rating, quality of construction, and general options.