>> I have a server running Centos 4.7 32bit. Will moving from 4Gig of >> RAM to 8Gig do any good? Since its 32bit I assume it will only be >> able to address the first 4Gig not? > As long as you are using a SMP kernel you can use up to 64GB of RAM > (though each proccess can only address 4GB of this). So if you can > find any trace of "SMP" in the uname (grep is your friend) then it > should work fine. I have this: [root at srvr ~]# rpm -qa | grep kern kernel-smp-2.6.9-78.0.8.EL glibc-kernheaders-2.4-9.1.103.EL kernel-utils-2.4-14.1.117 kernel-2.6.9-78.0.8.EL [root at srvr ~]# [root at server ~]# uname -a Linux XXX 2.6.9-78.0.8.ELsmp #1 SMP Wed Nov 19 20:05:04 EST 2008 i686 i686 i386 GNU/Linux Matt