using -H 1 -i 0 -C 1 -D -l K14x16 with my 660ti. Its stable but the numbers dont look right and I still cant get my max overclock with the updated version of cudaminer. Would be nice if someone knew anything about that but apparently my buddy and I are the only ones with this issue.
Heres proof...
http://i.imgur.com/r0Y8J8b.jpgYour numbers are better than my 670, everything looks gravy to me so long as you are intending to push your card and sacrifice a little of it's lifespan.