These boxes aren't called troll boxes for no reason!
CUDA 6.0 RC is available. You have to be a registered developer though
https://developer.nvidia.com/usercompile cudaminer and compare results. the T kernel for keccak might be interesting to check out.
In CUDA 5.5 it gives a rather shocking performance.
Christian
Using CUDA 6.0 with my GeForce GT 650M (1024MB) on OS X (MacBook) seems to have reduced my performance. With 5.5 I was seeing 70 - 75 Kh/s. With 6.0 I am seeing 45 - 50 Kh/s.
With both versions I have been using K4x32 as my configuration. Any suggestions on other configuration options that might work better with 6.0?
Thanks!
CUDA 6.0 might need adjusting or tweaking and it's not an official release yet just an RC for people to look at and devs to develop on, there may be issue or adjustments to software needed