I ran into a weird issue trying the Titan kernel on my GTX670. It was reporting almost 400khash, but every share was being invalidated by the CPU, besides otherwise acting fairly normally. Maybe there's an improvement to be made somewhere that could let Kepler achieve these kinds of khash rates.
For anyone looking for a config for their GTX670, I'm at 180 khash with these settings. If someone has something better, I'm all ears.
-i 1 -l K98x2 -C 2 -m 1
Try K14x16
Here is my brief summary of my results over the last two versions on a GTX670 (1254Mhz core, 3400Mhz memory) using K14x16 config and interactive mode, mining scrypt coin:
Ver 12-01, 64bit = 195Khash/s, GPU load ~99%, TPD ~80%, dips to 150Khash/s while still full GPU load
Ver 12-01, 32bit = 185Khash/s, GPU load ~90%, TPD ~75%, dips to 150Khash/s, but GPU load drops to 50% (I fixed this by opening up a browser window while I overnight. GPU load and hashrate return to normal)
Ver 12-07, 32bit = 190Khash/s, GPU load ~93%, TPD ~75%, clearly extra GPU utilization is resulting in extra Khash/s
Ver 12-07, 64bit = 205Khash/s, GPU load ~98%, TPD ~78%
Nice little update. Its good to not have to use the stratum proxy anymore as well. I hope these optimizations continue. I strongly believe this card is capable of at least 400Khash/s. If only the CPU could validate my card for the titan kernel =\
EDIT: Hmmm, just restarted my computer for the first time today, immediately opened up the cudaminer upon getting back to my desktop and noticed the same problem where the GPU utilization is only at 50% or so (getting 114Khash/s). By the time I opened this browser and typed the first sentence of this edit, the GPU load was already at 97% and my hashrate climbed to 209Khash/s. Anyone else having similar issues?