I've put an extra 9600gt pci-e card in my secondary slot. My intentions was not to do SLI *I can't do SLI anyway without hacked drivers because this is an AMD chipset mobo* but to see if I could possibly use the GPU on that secondary card to help enhance the rest of the os. I have Server 2k8 R2 installed and the desktop experience and such installed. basically a hopped up w7 on good drugs. 2 x PCI-e ( 1 x 2.0 x16 + 0 x 0 OR 1 x 2.0 x8 + 1 x 2.0 x8) so I'm aware I went from x16 to x8 on the primary video card but as I do SOME gaming it's not the main focus of this rig. not to mention I was hoping I could use that extra GPU now *no monitors hooked up to the secondary* to just help crunch math and increase performance overall on the whole rig. I've rtfm'd (probably not enough) and spent alot of time on nVidia's site and I KNOW I read articles about doing what I'm speaking of but I can not find it now. Does anyone here have any info or help they can offer on what I'm trying to do? Any help/info would be appreciated. Thanks in advance.