So... what is it? I think the earliest is the AMD Opteron (2003). >From a "earliest in each family" perspective, I think the answer is: AMD: AMD Opteron (2003). Intel: Intel Xeon (Nocona) (2004) VIA: VIA Nano (2008) Excluding Itanium (thank god), are there any other early x86 64bit CPUs that I'm missing or any that we explicitly no longer support? ~tom == Fedora Project _______________________________________________ kernel mailing list kernel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kernel