What that means is that the board is capable of setting the ram to 1600 speed. It wont care or test if your memory is compatible so please be sure to know how to reset your cmos/bios before you attempt this. Also please note that some motherboards cannot run in dual channel memory configuration while the memory is OC'd due to chipset limitations. Loosing dual channel would be a bigger loss then have to stick with 1333 speed instead of 1600 for what its worth.
Are you saying that I might need to reset my cmos/bios if I overclock my ram too much? Also, my understanding is that the OC letters after the supported ram speed spec of the board mean that the chipset on that board supports the ram being overclocked to the extent that it will keep its dual channel status? The cmos are the pins, usually on the corner of the board, with plastic covers that can be taken on and off to reset it, right? If so, is there a universal way to reset it or will my board come with instructions on how to do that? I would only need to reset the bios if my memory was overclocked too high, causing a crash, right? If so, do I reset it in the bios or how do I do it? I understand if you only want to answer one or two of my questions.