http://vr-zone.com/forums/418725/hd-4770-rv740-performance-and-price.html
Blimey, that last slide says it all.
They're calling G92 an "old architecture/process shrink" in comparison to the "new architecture" RV670. I know I know, RV670 was more than just a die shrink, but so was G92! And they conveniently don't mention G92b in there. Sorry for the OT. :smile:
80W TDP for the 4770, so the 4750 should be alright without an external power connector. OEM boxes need some love too