Hey, my gpu is the MSI 660ti OC. I have been wondering about why the gpu acceleration for sony vegas doesn't. At first I thought it was the program, but I decided to see how cuda works with other programs. I have downloaded benchmarks that work with cuda on and off, and I see no difference. Now I am worried that I cannot get cuda on my gpu to work. Any suggestions on a program that will allow me to verify whether it is a physical problem with the gpu by testing cuda? Or any suggestions on it in general would be appreciated.