I&#x27;m pretty sure they&#x27;re referring to PAE , and haven&#x27;t updated since they dropped i686.<p>It would&#x27;ve made sense in the 32-bit era to market as a 48-bit operating system, since it&#x27;s bigger than 32.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Physical_Address_Extension" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Physical_Address_Extension</a>