Yeah Ive been looking around and it says on the vegas website you need an opencl gpu. I dont know what to look for though. My budget for the build is $900 with an OS. Do I need a sound card?
you dont need a soundcard, motherboards have perfectly fine onboard sound.. and you only really benefit from a soundcard if your spending over $50.. Plus you have to have good enough speakers or headphones..
when looking for a graphics card with open gl, do a google search and find the specs of the card.. for example the gtx 560 ti
scroll down to 'feature support' and there you go, it suppports openGL, infact open GL 4.1
dont feel you need to buy a card like this for openGL theres lots of cheaper ones that also support it