There is no way in hell they'd use the onboard 7660. They did sign some sort of agreement with amd iirc. This will surely only be for GPU...
I really think, if they've learnt anything, it will be to have a more flexible memory architecture for simpler cross platform titles.
3570k WC @ 4.7giggles | 8gb Kingston 2133mhz | ASUS Sabertooth Z77 | R9 290 (awaiting wc block...
) | Seasonic x-660w | NZXT 810 switch | Crucial M4 128gb | 2x F3 1tb Raid 1 | NZXT Sentry 6ch 50w fan controller | BenQ bl3200pt 2560x1440p