On Wed, 1 Oct 2008, Dan Armbrust wrote: > Just don't get confused by the two different types of 64 bit processors. > > As long as you are talking about AMD64, or x86-64 - pretty must all of > the distros support it. This is what most people mean when they say 64 > bit. Pretty much every common processor supports the AMD64 extensions > these days. > > > There is, however, another 64 bit architecture - the Intel Itanium chips > - not nearly as many distros support that - I see that redhat / fedora > does http://fedoraproject.org/wiki/Architectures/IA64 > > Those processors are typically much more expensive, however. Right about IA64. But haven't the 64-bit Xeon's gotten a lot of marketshare lately? I think what you have written is what I would have written a couple of years ago but now that I am shopping again, it looks like Xeon x5400 series are 64-bit quad-core chips that come on a lot of server systems. So will software compiled for AMD x64 work just as well on Xeon x64? It looked like the Ubuntu web page on 64-bit OS was making no important distinction between AMD and Intel. Mike