With PAE the latter is 36 bits (at first... wider in later implementations). So, just because it is, for example, a "32 bit machine" does not mean that physical memory addresses are limited to 32 bits.
With PAE the latter is 36 bits (at first... wider in later implementations). So, just because it is, for example, a "32 bit machine" does not mean that physical memory addresses are limited to 32 bits.