I use 4 LCD's although not on a G5 but on my old G4 . I have the stock video card it came with and a ATI 9200 PCI video card . I did have audio problems with this setup , I was using 2 delta 1010's , there was a conflict between the video and audio PCI cards . I replaced the delta 1010's with 2 firepods , switching to firewire solved my problem . I just ordered a new G5 that I hope to have next week not sure how I will set it up yet . Hope this helps... Mike... Mike Post www.mojorecordingstudio.com