Don't forget your 32 bit apps which most certainly are stuck at 4GB regardless of PAE or not. Actually, most 32 bit apps I've used address only up to 2GB. Hence why you should really go for a 64 bit kernel. - aurf On Nov 16, 2010, at 2:01 PM, mcclnx mcc wrote: > I would like confirm one thing. Based on what I saw Redhat document > before, look like CENTOS 5 (X86, 32 bits) only support 16 GB RAM. > > Is this correct? > > Thanks. > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos