i used the ccminer off the zpool benchmarks page and i also had to install cuda toolkit 7.5 to get the stats going on win 7 64 bit with that gtx 950....
Hadn't noticed the preview builds there. You might find the 32-bit cuda 6.5 one is faster on most algos.
Not sure if we will get a password length increase. Got the usual enamouring response.