It's pretty exciting news that the nMP now can take 32GB DIMMS. Mine will be arriving with only 12GB of ram and as I will need to remove the existing ram to add anew, I'd like some guidance on how to proceed. I'm going to add either 64GB or 128GB. I'll do this in stages, as I can't afford to do it all at once. So for instance add a 16GB stick each month or a 32GB stick every other month. I understand that the 32GB sticks have a slower speed, 800mhz or so lower I believe. Should this impact my decision? Would it significantly reduce system performance? It's not so much that I would need 128GB right now, but I just don't want to be adding 64 now only to throw it away to embrace 128 later, so I'd like to get it right first time. How do you feel about this folks? Is the speed hit a compromise too far? Or would the file caching of the extra 64GB of ram offset this?