why only one GPU is working

Discussion created by ThomasUCF on Sep 16, 2010
Latest reply on Sep 28, 2010 by himanshu.gautam
four GPU installed correctly,only one working

   Hi all, I installed two HD 5970s in my computer, that is equal to four HD5870s. When I run the Nbody simulation in the ATI stream sample, only one is working. How can I make them work together? 

   Thanks a lot!