Your card has a TDP of 170 Watts.

Can you crank up your TDP target some more? to say 115%? Does it further increase hash rates?

My (somewhat overclocked) 660Ti has a TDP of 150 Watts and is currently churning out 292 kHash/s (latest version from github, using a now working -C 1 switch and -l K7x32).

Mine has 7 SMX units, yours has 6 - that might explain my slight performance edge. But it doesn't explain why my card has less TDP... Lower default clock and voltage maybe?
Your card also has a 256 bit memory bus, mine only has 192 bit. Assuming that for mining these extra memory bus bits don't make a difference, they will surely draw some more power.

Kepler cards can reach about 2 kHash Watt. Not bad. The 660Ti seem to offer the best value for scrypt mining from the nVidia lineup. Nearly 300 kHash/s and costing around 200 Euros, with a power consumption of 150 Watts. If were to build another CUDA based miner, I'd probably use four 660Ti cards on one mainboard. That's a 1.2 MHash/s system costing ~1000 Euros then.

Christian

Whats the complete config for your 660 TI??
I'm getting about 240kh from the new cudaminer.

Thanks, just with the config changes i;ve got it to around 280kh without the overclock.... I'm running the Asus GPU tweak, so i'll trying seeing what the offset will let me run on the GPU boost clock settings and memory clock. Currently they are running at 1096 gpu and 6008 memory clock

My 660Ti has a default clock of 876 MHz and max. boost clock of 928 MHz.
Memory clock in GPU-Z says 1750 MHz.  Not sure what the multiplicator is for GDDR5. There is no point overclocking GDDR5
memory for cudaminer.

With overclocking it's running quite hot (around 92 deg C) and it's actually hitting a core clock of 1071 MHz mostly. 115 % TDP.
GPU-Z says "GPU Clock 1042 MHz, Memory 1750 MHz, Boost 1094 MHz"

I just allowed it 122% TDP and now it's hitting 1123 MHz sometimes, mostly hovering around 1097. Temps rising to 95 deg C.
I will revert to 115% TDP....

Christian

it is sandwiched inbetween a GTX 780Ti (also mining) and a GTX 560Ti 448 core edition (not currently mining). Airflow isn't the best.

If I close Google Chrome my hashrate drops 50khash/s, why is that?
Also getting 295khash/s on my gpu, ASUS GTX 670 DirectCU II... compared to your card the results seem low.
Launch config: -H 1 -l K7x32 -C 1 -m 1

I'm at ~235 stable on my GTX670 with stock clocks. I still don't understand why people think 290+ is low.

The Chrome issue was mentioned earlier in the thread. I don't know if there was a solution, but have a search.

Disabling interactive mode gives me around 3 khash. Not worth it IMO since I work on this computer.

If your card isn't OC'd, I don't know how a <15% clock increase (that's if you have a TOP card) got you >20% khash over my card.

They sell 6 different parts called "ASUS GTX 670 DirectCU II", and half of them aren't overclocked, including mine (the actual part number for my card, which is a better way to talk about graphics cards than the name they give it because of situations like the one happening here, is GTX670-DC2-4GD5). I'm running with -d 0 -l K7x32 -C 1 -H 1 right now. There's quite a few configurations for KXxX that run at approximately the same hashrate.

You have one of the overclocked versions (there's 3, at different levels of overclock), specifically the one with the highest factory clock that I was comparing against when I did those percentages.