Will this work on something with a compute of 1.3? I have a couple GTX 275s that I use and ccminer does not seem to work.  Continually gives stratum error messages.
I can get my gtx 275 to about ~90kh/s when the moon is in the right location. Otherwise, it's ~50kh/s.

I am just experimenting, so I do not want to point my 7950s to a new pool yet.