On 12/13/2013 16:35, Michael Hennebry wrote: > I note the absence of PAE for CentOS. > I've read that PAE can be important. Only if you're trying to address more than 4 GB of RAM on a 32-bit system. Even then, most software doesn't take advantage of it. PAE is an old hack Intel invented in the mid 90's to ease the transition to 64-bit computing. Now that 64-bit is really, finally here, it's time to start forgetting that PAE ever existed.