All you will need is an HDMI cable. If you want 7.1 channel lossless digital audio to go through your HDMI cable, you will need to get an audio loop cable (a lot of video cards include it) which goes from your SPDIF header on your mobo to a tiny adapter on your video card.
And it is quite convenient having digital audio and video going through one cable.
As far as GPU, are you going to be playing any games?
No. i will not play games. any suggestions?Thanks.