ok so i am about to build my first build I just do not know if the memory i choose will actually work I'm thinking about getting the asus p8p67 and it says it supports '4 x DIMM, Max. 32 GB, DDR3 1866(O.C.)/2133(O.C.)/2200(O.C.)*/1600/1333/1066. Due to CPU behavior, DDR3 2200/2000/1800 MHz memory module will run at DDR3 2133/1866/1600 MHz' does this mean i can use any memory with any one of these particular amount of MHz? also i have noticed that different memory have a different amount of pins? would i be using 240 for this board? and also what does O.C. mean? one quick thing, the memory i am looking at says pc3-16000 what does this mean? many thanks, nate.