well, i've said it once and i'll say it again: the R770 is looking much more promising at the moment than the stuff coming down Nvidia's pipeline. granted, we don't know much about it, but considering that its a brand new architecture that's "better" than the current R6xx series, it should at the least outperform Nvidia's latest which barely outpaces the current R6xx stuff.
combine one of those with a 780G board in hybrid Xfire...
See the struggle of the faithless lot as they negate their time
How low to sink to the depths of their frame of mind