I bought one (GTX 960 not 950) and compiled .74sp-MOD under cuda 6.5. It ran X11 at 5.3MH. I'm a linux guy but for kicks I tried it on windows with the precomiled binary and got 5.5MH. X15, 3.4MH linux (Ubuntu 14.04), 3.8MH winblows (8.1). Kinda turing into a windows guy again. lol