PC Vendors are snapping up 7800s, and with no R520s in sight, who can blame them?[Digi Times]The delay of the ATI Technologies R520 graphics processing unit (GPU) will benefit sales of the Nvidia GeForce 7800 GTX (G70), as more PC vendors including Dell and Hewlett-Packard (HP) have decided to adopt the GeForce 7800 series for their high-end PC models slated for release at the end of this year, according to unspecified Taiwan motherboard makers.