[SLL] what's RHEL's current ram limit?

[William Kreuter]

I'm puzzled to not be able to track this down easily 
and unambiguously.  What is the ram limit for 64-bit 
RHEL 5.5 or higher?  I get the impression that for 
32-bit RHEL without PAE, it's 4 gigs, while for 64 
bits, it's 16, or maybe it's 32, or something.

If I install 64-bit RHEL 5.5 out of the box, can it 
use 32 gigs ram?

Billy