[SunHELP] memory- what RAM modules are interchangeable?

[Gallagher, Tim]

We have an Ultra Enterprise 450 which we would like to increase the memory on. We have numerous other machines which we could probably cannibalize, the questions are;

Are RAM modules from other SUN models usable on this machine? 
Is so, which models? 
Some details on how such a determination is made would also be appreciated.

I will summarize, thanks very much.

Tim Gallagher