I've recently purchased a GTX 295 card, thinking that I can get a good 16,000 ppd or so out of it. However, I've only managed to get one of the cores folding so far. I'm using the following flags: "-gpu 0 -verbosity 9 -local" for the first client, and "-gpu 1 -verbosity 9 -local -forcegpu nvidia_g80" for the second. I'm using Windows XP 32-bit, Nvidida's latest 191.07 drivers, and the F@H-GPU console client. The first client runs fine, but the second gives me "UNSTABLE_MACHINE" errors all the time, and rarely if ever starts folding. I have disabled PhysX. Disabling or enabling multi-GPU mode makes no difference. Right now I'm thinking heat is the problem, since the cores get pretty hot when folding (90°C or so). But this should be alright for a GTX 295, since it's rated by Nvidia to withstand temperatures of up to 105°C. However, it might still be an issue.
What to do? Suggestions appreciated.
EDIT: Problem solved - apparently I didn't do it correctly the first time. All I had to do was extend the desktop with multi-GPU mode disabled. Both cores are folding away nicely now. I just have to remember enabling multi-GPU mode again when I'm gaming.
An interesting side-effect of this is that there's no barrier on the right side of the screen for the mouse cursor, since there's an "invisible" 1920x1080 desktop there. :D
Edited by Johan, 27 October 2009 - 06:12 PM.