Hello. I recently bought 2 4GB RAM @ 1333mhz. The thing is, since Mac OS X does not have BIOS, it does not change the RAM's clock speed to its required speed. When i mix the ram, however, with one of my previous 1GB RAM, it works as 5GB. I have bootcamp and tried using Thaiphoon but it seems like you can only write the SPD with registered version. :\ any help? The RAM brand is Micron, btw.