The highest official DDR3 frequency is 1600Mhz. My 8320e board is happily chugging along at 2400Mhz. That's 50% faster. In fact, my motherboard is advertised a

The highest official DDR3 frequency is 1600Mhz. My 8320e board is happily chugging along at 2400Mhz. That's 50% faster. In fact, my motherboard is advertised at a 2133Mhz max, and so is my memory. "Official" frequencies are a very poor metric. You might as well run your memory as fast as you can, so long as it's still stable. If you are concerned about stability, just run a few iterations of memtest86.