Not sure if anyone else is having the same results, but my GTX 560ti is getting about double the hash speed of cudaminer by using cgminer.
I forget how you enable cgminer to use Nvidia
This speed is only for keccak algorithm.
I didn't have to do anything. I downloaded cgminer from
http://maxdl.1gh.com/cgminer-windows.zip?nocache=0.4958481655921787Then set my .bat file to cgminer.exe --keccak -o address:port -p password
Getting 45m/hash for maxcoin where as I was getting around 19m/hash on cudaminer
Tried it but runs way worse for me. ~100 MHash on a 780 versus 160 MHash with cudaminer.