On Monday, December 05, 2011 03:48:12 PM John R Pierce wrote: > the chipset doesn't support over 2GB ram. the Pentium-M was based on > the Pentium-III core, which afaik didn't have PAE. /me shrugs. They > added it back in for the Core family. That's the odd thing; PAE has been there since the Pentium Pro, so the P3 had it. It seems that all x86 processors since the PPro, except for the 400MHz FSB Pentium M's, have PAE. Oddly, the 2.0GHz Dothan is documented as having PAE; it's only the 400MHz FSB (Banias) ones that are documented as having PAE disabled. The PAE feature apparently affects more than just the address space, at least according to the Pentium M Wikipedia article.