My question is this: If I have a Z75 motherboard with a i7 3770 -which has 2 sticks of 4GB each @1333 MHz RAM , can I simply swap out the two 1333 MHz sticks for two 1600 MHz 4GB sticks (since the default speed for the Z75 mobo is 1600) or do I have to do something else to get them to run at 1600 MHz?