The problem is with the memory controller it seems, which is on the Intel CPU. I've also seen this on my Biostar x58, and on various x58 threads. It's Intel's first go at an IMC so I'll cut 'em some slack I guess!
As it's the CPU where the controller is, changing that may help more than swapping the board. First try removing and reseating the chip.
Otherwise be prepared to run the RAM at 1400MHz. 1600MHz+ *is* overclocked under Intel's guidelines. As Paulieg says, there are a lot of timings deep hidden away in your BIOS too.
Not much more I can suggest, especially as your chip, OP, is a nice new revision, 930.