Hey guys,
I'm contemplating this board for my 5x 280x rig:
http://www.newegg.ca/Product/Product.aspx?Item=N82E16813130727MSI Z87-G55
Has anyone successfully gotten 5+ cards to run on this board yet? Perhaps 280x cards? If yes, what slots did you populate?
I ask because an older rig of mine runs on the Z77-GD65 and needed presence pins in ALL three 16x slots for six GPUs to run properly.
Thank you in advance

If you're only going to be using 5 GPUs, get the 970A-D3P. It's much cheaper than the one you linked, and I can confirm it runs 5x 280x or 5x 290 just fine.