I've read somewhere that all MX cards are almost the same in performance. The only difference seems to be the presence of TV in/out, twin-view and bundled software. As I don't care much for any of those things, I figured that the cheapest card would be the best for me. But I hear that eVGA put 5.5 ns memory, while all the other cards have 6 ns. I wonder how much difference (if any) will it make?