I keep repeating on this forum - and it's quite a couple of years now when I registered for the first time - that it's always the particular application which dictates what is and what is not appropriate in that particular case.

As long as we don't know what is the OP's application for a big RAM, we can only speculate. And, to say, ARM is best, is the same nonsense as to say '51 is the best. Note, that NOBODY said that so far (except Andy, who quoted the "the best", but I repeat, nobody said that). "The best" is nonsense without context.

I maintain, that there ARE applications where paging does not matter, as well as attaching a RAM serially or in whatever way. That these are not "common", "majority" applications, it really does not matter - we don't know whether the OP wants to discuss a "common" application, or a specialty - and I would bet on the latter, otherwise he probably wouldn't ask at all.

And I see no point in repeating the "common" solutions - there are textbooks, FAQ, zillions of other places to refer for that. I prefer to discuss the rare and extreme, as there are far less sources for that, and that's what can distinguish us from the crowd.

JW