Ok, so the problem is the second card is running in PCI-E x1 mode instead of PCI-E x8 like it should be. It actually looks to me like you have the second card in the wrong slot. The slot that ruff0r circled is actually incorrect as well. If you were running a 40-Lane CPU, ruff0r would be correct. However, because your 5820K is a 28-Lane CPU, you actually want to use PCI-E x16_1 and PCI-E x16_4. This is the chart to figure that out from ASUS:
These are the slots you want to use:
Sorry for the double post, but I wanted to bump the thread so the OP saw there was a new reply.