If you wish to run RAM above 1333 Mhz. and your RAM is rated at a higher speed, you are not overclocking your system. However, AMD recommend that you only use memory that appears on the QVL as this has been tested for compatability at higher speeds. If you are unsure about the compatability of the RAM you have bought the safest option is to run it at 1333 Mhz to avoid damaging the Memory Controller. If you are looking to buy RAM that is faster than 1333 Mhz. and it doesn't appear on the QVL be prepared to downclock the modules to gain system stability. There are no guarantees that the RAM will run as stated and you could possibly damage the CPU's Memory Controller.