Overclocking msi-790fx gd70 with Geil 8g ram (4x2)

What are you trying to achieve? What is your RAM speed at the moment?

I'm trying to overclock the memory the same board, but don't know how. Anyone have an idea where I learn how to do this? I can build systems, but I haven't a clue on how to make the proper overclocking settings in BIOS.

As OvrClkr said, we can't help you without having the specification of your RAM.