I am trying to run a Geforce FX5200 128mb card (original card with 2 monitors) and a new Geforce 5200 256mb card (hooked to one monitor) together on a 305w psu in a dell Vostro desktop. When I put the new 256mb card in I can not get to the windows logon screen. The screen just goes black. I can see the white pointer on the two monitors that are hooked to the original 128mb card but nothing on the monitor hooked to the 256mb card. If I take the 256mb card out and run the 128mb card only it works fine. We run a 3 monitor setup on this machine. The old card went out which is a 128mb card and I could only find a 256 mb card to replace it with. Is my power supply too small to handle a 256mb and a 128mb card together? The onbboard video is disabled and this machine has 4 gig RAM.