VAX-11/750 memory in 11/70 ?

[Pontus]

Hi all

I was told that VAX-11/750 memory could also be used in an PDP-11/70 (or 
maybe some other model). Is this true?

I have also read that there are three kinds of memory boards for the 11/750:

M8728: 256k byte memory array;
M8750: 1M byte memory array;
M7199: 4M byte memory array.

(As well as some third party boards.

Which one of these, if any, could be used in an 11/70?

Kind Regards,
Pontus.