sure... but the bandwidth available to that video that will vary... in other words... you wont get the "top" performance for it but who cares... you are not modeling molecules in 3D or playing games on it.. basically, what I am trying to say is that unless you have a Xeon, your performance will be halved on that x16 slot if you use two video cards.. but this is not the issue... you dont need huge amounts of bandwidth to display 2D.. anyhow, you will need to get two 4 port cards to address those 6, so you can expand up to 8... some of the guys here like ATI.. http://www.amd.com/US/PRODUCTS/WORKSTATION/GRAPHICS/ATI-FIREMV-2D/Pages/ati-firemv-2d.aspx I prefer Nvidia because I have experience with them.. http://www.nvidia.com/object/desktop-nvs.html as well as Matrox, which again, I have experience with... http://www.matrox.com/graphics/en/products/graphics_cards/m_series/ in the end, compare them... froogle them for the best price and get a matching pair... and of course, if you can... get DP assuming your monitors have DP's and depending on size(monitor)...
Looks fine. Ignore all the negative feeback on here. I don't know why they do that. Whatever makes you comfortable is what you should use. Build for the harshest environment you will trade in. If you intend to trade, or trade out of, the most volatile situations, you can't have too much RAM, CPU and bandwidth. I build multi-monitor systems backwards. Start at the monitors. Look at your resolution. Find GPU's that will push those monitors. Find a mobo that will support those GPU's. Pack as much RAM as you can get in there. Any nice quad core 3.0+/- gHz CPU will work fine. Size your power supply and make sure the case fits the mobo. Good luck!