Hi All: I'm trying to figure out how to get 10 screens working together like one big desktop on a Mac Pro. Currently I have a 12core 2010 Mac Pro with 2 ATI 5770 cards driving 6 30" cinema displays. Each of these cards are double wide. I want to connect 4 65" LED displays. Does anyone have an idea how I can do this? The Mac Pro has only 4 slots. The two 5770s take up 3 spaces (because of their doulbe wide size). The last slot has a OWC solidstate drive there. I guess I could remove that and use just a regular SATA SSD if need be, but would love to get this done with just 3 slots. So some thoughts. There are two possible ways (ideal, and less ideal) that I can think of: IDEAL way: The ideal would be to find a single wide card that supports 5 or 6 displays, and use that. I know that some people have had success flashing single wide cards, but it's not clear if all the ports are usable. See here for an ATI card with 3 ports, single slot, that's been flashed: http://www.ebay.com/itm/Apple-Mac-P...679?pt=PCC_Video_TV_Cards&hash=item23240af2e7 Also, it's not clear if you could get 4 of those cards working to drive all 10 screens. However, there are single wide 5/6 display cards like this: http://www.newegg.com/Product/Produ...a-_-na&AID=10440897&PID=3332167&SID=u00000687 Has any seen or know of a 5 port card like the above that has been flashed to work in a Mac Pro? LESS ideal way: My guess is there are some PCI expansion chasis, and I can just put in 2 more regular ATI 5770s there. I found this: http://www.jmr.com/en/products/14/3-slot-pcie-extender/ and this http://www.magma.com/catalog/classic-pci-expansion I'm not sure how well these extenders work. EVEN LESS ideal way: Perhaps getting another Mac or PC and somehow VNC'ing in is an option, but this likely would be too laggy to run video from one computer to the other. The ideal is to just treat the system like one giant screen, but I'm open to hearing any experiences/suggestions on getting this to work. Thanks so much!