I think you are truly confusing RAM with storage space. The 64GB models of the phones and tablets come with 64 GB of SSD storage space, **not** 64 GB of RAM. In fact, when you read the specs for the tablet that I have (the Samsung Galaxy Note Pro 12.2), it says that it has 3 GB of RAM. Three. I just read over the notes that come with the KitKit to Lollipop upgrade, and Google says that it will decrease available memory by a *minimum* of 950 MB (that's 0.95 GB, or slightly less than one gigabyte). Is Google also confusing storage space with memory (RAM)?! I truly hope so, because if they aren't, then this means that your available free memory (working memory) in the device will be cut by one-third! Can we assume, if that would be the case, that the Lollipop OS is programmed to be wayyyyyyyyyy more efficient to compensate for this? Yeah, right. And, unlike in computers, Android devices have RAM that is not upgradable. By design. So you buy a *brand new* machine (as I did), then less than a month later they throw a ball and chain on it and turn it into a boat anchor that is mostly good at sucking battery power. Or maybe just plain sucking.
We'll see. The upgrade has downloaded itself on my machine, and Samsung tells me that after a while it will force install itself. Hopefully I did not just buy a brand new brick with my $1000.