pdpAchilles :
i accidently bought a 1600 RAM but I just realize that I bought a MOBO that saids DDR3 1600(O.C)/1333. Am i ok? Im not planning on OC though....
Just from what I have been reading, and from the prior posts here, I think you are okay. Basically, my understanding is that, if you put 1600 in a MB that supports 1600(OC)/1333, the 1600 sticks you put in will default to 1333, and run at 1333, which would mean it is not running at the speed you bought it for (or bought by mistake). However, you can go into your BIOS and change the settings to get the memory to clock at 1600 - which is its potential. But other than that, the 1600 will just be read by the BIOS and MB as 1333, so you are fine, there shouldn't be any real problem.
Edit: I am not an expert in any fashion, so please correct me if I am wrong.