[Mark879]

I'm fairly new here so take this with a grain of salt. After trying several motherboards I found gigabyte ga-ep35-ds4 works for me using HD|2. If you use two cards you will need a videocard that takes up only one PCI 16 slot (not two). The two cards fit it fine and did not obstruct any important features on the board. On other boards the PCIe slots the boards will hit your RAM boards. Also, another lesson I learned. Make sure you computer case is large enough that the card or cards fit, ie. they don't run into your hard drives, etc...Hope this is helpful.