I have tried the Z87-K with 2 GPUs on the 16x slots but the 1x slot won't work at all with 1x->16x powered risers (the second one is covered by a GPU).
I am looking at the
MSI Z87-G45 and
Gigabyte Z87X-UD3H. My plan is to have 2 16x slots in use for occasional gaming, and 2 or 3 1x to 16x risers for additional cards strictly for mining. Which of these is the proven option.
Windows 8.1
i7 4770k
MSI Z87-G45 or Gigabyte Z87X-UD3H
2 290x's
1-2 79xx cards
1 69xx card
The only thing I care about is
2x slots for gaming/mining, and
2-3 1x slots to use for risers (at the same time).
It seems hard to find anything which can use most of the slots and they seem to disable certain slots depending on how you populate them.
My thought on the Z87-G45 Gaming would be to use the first and last slot with 1x to 16x risers, and the 2 PCI-E 16x slots with cards in them.
Has anyone used this board, or the UD3H like this, successfully?