The zotac will support the 940 and the 955 with the bios update. In my case I use these boards as compute nodes or added computing power, not graphics. My head/control node supplys all the graphics necessary. While running server 2008 HPC edition on all nodes or computers, properly configured software and high speed network you can run a virtual machine that will enable you to use all the power of the entire cluster as one machine. Your high-end graphics output will probably be attached to the head node, in this case it should be capable of multiple graphics interfaces for high end cards. In other words the zotacs are just helping hands. These are really good for 3d render farms, video editing, game creation, photo manipulation, and other highly multithreaded apps. You would be building a small super computer.