OWC has 32 GB RAM Modules for the nMP I want to upgrade to 32GB or 64GB, and eventually 128GB would be great. What are my choices? As follows ... Can I install a single 32GB module now, or does it have to be 2x32GB? In either case can I keep the existing other two slots with the existing 2x4GB RAM sticks? If I install any of the 32GB modules, will they perform appreciably slower? The 16GB are listed at 1866MHz, but the 32 are listed as 1333MHz, however it seems to indicate it'll actually run at 1066HMz on the "Special note".