“The
PAE (Physical Address Extension), is an extension for 32-bit processors, present since the Pentium Pro, which adds additional 4-bit memory addressing, allowing the processor to be able to access up to 16 pages of 4
GB each, totaling 64
GB. Each program remains restricted to a maximum of 4
GB, but the system can allocate different pages for different applications, thus using all available memory. … “