I want a setup with two graphics cards. But, I will not use them for SLI/Crossfire. SLI/Crossfire is way too expensive for the performance gain that they offer. The only reason that I am interested is to use one for rendering and the other for displaying the output. This means that the graphics card tasked with displaying the desktop does not suffer extreme lag, which is what happens if you render using Cycles and attempt to display the desktop simultaneously only on one video card.
With this in mind, the fact the board here only supports running one video card at full speed should not hamper things, right? Rendering is bottlenecked by the performance of the GPU, and not the PCIE slot. Therefor, I would be a fool to pay twice as much for a board with two slots that run at x16 speed and Crossfire/SLI support, when I'm never going to use that, correct?