What is the trick?
The trick is to force computation onto the 3D side. You do this by starting Cudaminer when 2D is running, and then disable 2D. This keeps the 2D running for the program only and forces the 2D computation into the 3D program. Its like running an 8 bit program on a 32 bit system without emulation.
I'd also like to understand how this works... disable 2D while it's running?
Just turn on the overclock and then cudaminer. You have to then, disable 2D in GPU Tweak. That is the process. I would like to find out why the scrypt is not being submitted or accepted. I would need someone who knows about programming and scrypt computations to find the issue, and possibly fix it. This would be a huge boost if we can get it working. It could all be for naught though.
This is what I get whenever I try. I've tried a number of launch codes but they don't seem to make any difference.
GPU #0: GeForce GTX 560 Ti result does not validate on CPU (i=5432, s=1)!
GPU #0: GeForce GTX 560 Ti result does not validate on CPU (i=5859, s=1)!
GPU #0: GeForce GTX 560 Ti result does not validate on CPU (i=4586, s=0)!
GPU #0: GeForce GTX 560 Ti result does not validate on CPU (i=923, s=1)!
GPU #0: GeForce GTX 560 Ti result does not validate on CPU (i=2834, s=0)!
GPU #0: GeForce GTX 560 Ti result does not validate on CPU (i=6629, s=0)!