ATI Hybrid CrossFireX™ Technology Based on ATI CrossFireX™ multi-GPU technology, ATI Hybrid CrossFireX™ takes your gaming experience to the next level boosting PC performance. ATI Hybrid CrossFireX™ is one of the technology features included under the ATI Hybrid Graphics technology umbrella brand. It brings multi-GPU performance capabilities by enabling an AMD 780 integrated graphics processor and a discrete graphics processor to operate simultaneously with combined output to a single display for blisteringly-fast frame rates. Unleash the graphics performance that you’ve been waiting for on a mainstream Windows Vista® PC! How Does ATI Hybrid CrossFireX™ Work? ATI Hybrid Graphics technology enables a discrete graphics processor and an integrated graphics processor to render simultaneously in ATI Hybrid CrossFireX™ mode, in Windows Vista® to help provide a significant performance boost to AMD-based systems so my questions is: when i using ATI Hybrid CrossFireX which DVI port do i plug in? mainboard or graphic card for supporting ATI Hybrid CrossFireX????