I have yet to double check the Sony Vegas Pro 10 supported video cards, butt-butt I will go out on a limb cuz I pretty damn sure that their is not a single GTS card on that list last time I checked. IIRC the list was GTX, then FX And Then Quadro. ….. Ive seen GTX 400’s tear through 20min renders of AVC in 10mins. I plan to test a GTX 460 & 480 and a 590 AND THEN post the results to Youtube. I got to say Iam pretty disjointed with the lack of render time stat comparisons on the web right now. You can find a list of the supported cards on the Sony Vegas 10 site & on wiki.