Just buy one and test it. I doubt anyone has that exact board and tested it and will read and answer this thread. In my experience with more expensive boards, they half work, where you can add a few extra GPUs with hours of headaches changing the BIOS and reinstalling drivers. If I could do it all over, and when I buy my next mining rigs, I'll just pay the extra $100 for a motherboard that can handle the amount of GPUs I want. Not worth the trouble.