Hi, I recently purchased the following system: Operating System: Windows Vista Home Premium 64 Bit Motherboard: EVGA 132-CK-NF78-A1 NF780I SLI CPU: Q9450 2.66G overclocked to 3.2 gHz. Memory: 8 gig OCZ OCZ2RPR10664GK Video Cards: Two (2) MSI N9800GX2-M2D1G GF9800GX2 Hard Drives: Three WD 640GB 6400AAKS SATA 7200RPM 16MB. Two are in raid 0, with the OS installed on the raid array. CPU cooler: XIGMATEK HDT-S1283 DVD Burner: LITE ON LH-20A1L-05 20x superallwrite SATA+lightscribe Power Supply: ENERMAX EGX850EWL galaxy Case: LIAN LI PC-P80B My idea was to run one 24” monitor from the top PCIE slot and another from the bottom. I did not want to do quad SLI. Monitor resolutions are 1920x1200. I spent about a week attempting to do this. I tried every way I could imagine to get this to work, and couldn’t. I could accomplish the following: 1. Get one 9800gx2 working in multi-gpu mode. 3dmark vantage score of about 10500. 2. Get one 9800gx2 working in multi-monitor mode. 3dmark vantage score of about 5500. 3. Get two 9800 gx2s working in quad-sli. 3dmark vantage score of about 15000. 4. Get two 9800 gx2s working in multi-monitor mode. 3d mark vantage score of about 5500. It’s obvious from the above that: 1. A 9800gx2 with both halves of the card working together is about 10500. 2. A 9800 gx2 with only one half of the card working is about 5500. I can’t get each card outputting to an individual monitor with each card performing in mult-gpu mode. I contacted nvidia support, and their answer is summarized here: “I'm sorry but you cannot run two separate instances of Multi-GPU mode with two 9800GX2 cards. You can only disable SLI and be able to operate in a multi display environment or enable Quad SLI and be limited to a single display. What your trying to configure is not expected behavior nor supported.” Ok, so nvidia doesn’t support what I’m trying to do. I won’t debate here whether I think that’s reasonable. So that leaves me with one super fast quad sli machine, or one dog of a multi-display system. I’d love for that to be somewhere in the middle. Has anyone figured out a work around to help me accomplish what I want to do? Is it possible to modify nvidia’s drivers to allow this? Has anyone gotten the work around trick of adding a third cheap video card to work with 2 9800gx2s in quad sli? Would the Matrox doubleheadtogo work for what I want to do? I appreciate your time in reading this post, and look forward to some constructive replies.