well i looked around the f@h website a bit, and found instructions for running the windows client through wine on linux. they are here:
http://foldingforum.org/viewtopic.php?p=158848#p158848
so i figured i'd try to see if that could happen for osx.
i installed winebottler from
http://winebottler.kronenberg.org/,
the os x cuda toolkit from
http://developer.nvidia.com/object/cuda_3_2_downloads.html
then the gpu3 folding client from
http://www.stanford.edu/~friedrim/.Folding@home-Win32-GPU_Vista-631.zip
ran the client in wine but i keep getting "Gpu species not recognized." errors from the folding client. i see theres a new version of the client available, i'll try that. thinking either that or the os x nvidia drivers are enough different from the windows ones that the client can't access it properly. this is on a 2009 mp with the gt120 which is fermi i think. tried both fermi and non- in the client but both gave that error. play around with it and see maybe what you all find
EDIT 1: I JUST TRIED THE NEWEST VERSION OF THE CLIENT, 6.40r1 AND IT NOW APPEARS TO DETECT THE GRAPHICS CARD! it sees the gt120 as Gpu type=3 species=20. the client downloads the core then it crashes when it tries to run with Calling '.\FahCore_15.exe -dir work/ -suffix 01 -nice 19 -checkpoint 15 -verbose -lifeline 63 -version 641'
[22:17:18] CoreStatus = C0000135 (-1073741515)
[22:17:18] Client-core communications error: ERROR 0xc0000135
[22:17:18] This is a sign of more serious problems, shutting down.
will continue to try to get this to work
EDIT 2: I missed the part to install some wrappers. going to see if that helps. apparently from
http://foldingforum.org/viewtopic.php?f=59&t=16783 someone said gpu2 ran on os x so maybe it's possible