Hello I am getting a new Yamaha rx 775 and want to know if it is possible to use the Mini HDMI for audio by connecting it to the AVR and use a DVI to hdmi cable to connect the gpu to my tv monitor for video.
Would this cause any video lag?No, you can only have one handshake. The good news is, you can go directly from your GPU to the Yamaha, and then out to the monitor. I do this for all of my rigs, it works fine, and you'll get great audio (and video, if it's included on the music file). You won't need a DVI cable for this.
Have a ball, it should work fine.