I have recently purchased a 12 core 2.66 Mac Pro. The specs read that my machine will do 1333mhz. It originally had 1066 ram loaded in it (don't ask me why), but I recently loaded it with 1600 memory, thinking I'm going to get 1333. At first I really thought I saw this speed come up in the "about this mac". But, today it only reads 1066. Is there something I need to do to get this up to 1333? Help!