I dunno bout the performance hit there chuckos, seems like you'll actually get 1fps better than non-nforce chip mobos.
Far as the standard x58, well, that mobo had a host of problems and you can tell from the step up cue that x58 standard owners wernt too happy. I'd wait and see what kinda numbers and complaints churn outa the x58 classified before plopping down the big dough. If things look great and you can afford it, then launch away