AMD designed the cores to shut off while not in use, disabling the cores in bios wouldn't really factor into much if any gain depending on how good AMDs design is.
This is from from being official, the OP that is. Still coming from that trash site that has post up numerous rumors. So many that they have contradicted themselves with every other "news" article.
Edited by Strat79 - 7/23/11 at 3:13pm