hi, try to use different combinations, maybe all of them :-)
-i 0 (or 1)
-m 1 (with or without)
-C 0 (or 1 or 2 or without)
-H 1 (with or without)
autotuning kernel for best results: -l Fauto (or -l Tauto or -l Sauto)
Hi, I tried tens of combinations. No luck, impossible to get more than 20 kHash O.o
Antares88: I have 9800GT that is actually the same 8800GT. As I posted before, I couldn't find good settings for that card. Also, I get strange differences in speed with every time running miner with the same settings.
If you succeed finding optimal settings for that card, please share them.

It's interesting how much can score that old cards. My best speed I get is ~25kh/s, but it's not stable as not always MCU gets the same load. Sometimes it gets only half of load and i get only 14kh/s


the results seems pretty random... do you use 64 bit cudaminer or 32 bit ? what drivers?