You don't need an expensive cable, you need this: http://www.amazon.com/AmazonBasics-HDMI-Adapter-Cable-Meters/dp/B001TH7T2U/ref=sr_1_sc_2?ie=UTF8&qid=1350703024&sr=8-2-spell&keywords=dvi+to+hdmio
It works perfectly, it carries audio too. If your GPU has an audio-pass-through, you can send audio through the cable. If not it might need a small cable to be attached from the motherboard to the small holes on the side of the GPU; assuming it's an Nvidia card. There is no lag at all too.