I added a poll for the OP. I hope the options are acceptable; I left the final option for those who have/claim to have more memory installed in the MPs than is officially supported by Apple (which, AFAIK, is no more than 32GB in any edition of the MP at this time).
If you do not have more information to add than just your specific amount of RAM, please suffice it to vote in the poll; feel free to post if you have something substantive to say.
(Also, in case it isn't obvious, please don't troll.)