I know RHEL 4 is ancient history now, but trying to find minimum memory requirements on the Redhat website is proving to be almost impossible (or I'm searching for the wrong thing).
Minimum CPU requirements would be useful information too.
I have a system with 512MB RAM and a 2.8GHz Pentium 4 which I'd like to install RHEL 4 onto. If that's possible :-)
Redhat 4.x and CentOS 4.x will install just fine in that RAM/CPU footprint.
LinuxQuestions.org has an answer: