I have a a decent P5 dual-core with 8GB RAM and I'm happy with it. It runs Win Vista x64. Want to wait for some time for the new i5 or i7. The full-length Asus mainboard has only one full PCIe slot, 3 shorter PCIe (?) slots and 3 PCI slots. I currently use an ATI PCIe card to drive two 19" LCDs. It is decent. Now I'd like to add another or two LCDs. So I need to either replace the ATI to a quad video card, or add another dual video card. I tried to add an old PCI card. The driver was installed, but it can not start. I see this a driver conflict. The nVidia and Matrox PCIe quad cards are nice, but the prices are high. I can also have a cheap PCI quad card, like nVidia 400 and Matrox G450, but they are old cards and I'm not sure if the 64MB total video memory is enough to drive the 4 LCDs, and if the cards will be supported in Vista and Win7. The last option is to buy one nVidia 290 and a 280. This is something I'm least certain with. Any experience is appreciated. I do not have much hope if I just add a nVidia 280 to the ATI card. Thanks.