<< Hmm, strange. I don't use powerstrip, so no advice here. All I can say is that you're not missing out on much. I know creative put out an app that will let you force agp 4x and fast writes, but as far as I know, they were the only manufacturer to do so. >>
Probably because Fast Writes and Sideband Adressing rarely seem to improve performance at all, and also impact stability significantly in some instances.