PAE meaning in Computing ?

Answer:

What is Physical Address Extension mean?

In computing, Physical Address Extension (PAE), sometimes referred to as Page Address Extension,is a memory management feature for the x86 architecture. PAE was first introduced by Intel in the Pentium Pro, and later by AMD in the Athlon processor. It defines a page table hierarchy of three levels (instead of two), with table entries of 64 bits each instead of 32, allowing these CPUs to directly access a physical address space larger than 4 gigabytes (232 bytes).

The page table structure used by x86-64 CPUs when operating in long mode further extends the page table hierarchy to four levels, extending the virtual address space, and uses additional physical address bits at all levels of the page table, extending the physical address space. It also uses the topmost bit of the 64-bit page table entry as a no-execute or "NX" bit, indicating that code cannot be executed from the associated page. The NX feature is also available in protected mode when these CPUs are running a 32-bit operating system, provided that the operating system enables PAE.

reference

Full Form	Category
Pacific Architect Engineering	Academic & Science
Pacific Architects and Engineers	Academic & Science
Pacific Architects Engineers	Academic & Science
Protistology and Aquatic Ecology	Academic & Science
Protistology Aquatic Ecology	Academic & Science
Premier Auto Electric	Academic & Science
Plan for Academic Enrichment	Academic & Science
Everett (wa)	Airport Code
Peace Arch Entertainment Group, Inc.	Business
Panel on Audit Effectiveness	Business
Patent Assertion Entities	Business
Post- Autistic Economics Network	Community
Performing Arts Education	Community
Performing Arts Exchange	Community
Physical Address Extensions	Computer Assembly Language
Physical Address Extension	Computing
Processor Address Extensions	Computing
Privacy Authoring Editor	Computing
Port Access Entity	Computing
Port Authentication Enable	Computing
Peer Access Enforcement	Computing
Port Aggregation Expansion	Computing
Personal Avi Editor	Computing
Procedural Application Environment	Computing
Passport Advantage Express	Computing
Power-added Efficiency	Electronics
Program Advisor Expert	General
Prostate Artery Embolisation	General
Protección Animal Ecuador	General
Pompe A Essence	General
Performance Active Exhaust	General
Prescott Auto Enthusiasts	General
Personal Accident and Effects	General
Pi·h Asia Enterprises	General
Protecci? Animal Ecuador	General
Pray About Everything	General
Phsyical Aptitude Exam	General
Produkte Anwendungen Entwicklungen	General
Pacific Asia Express	General
Piëch Asia Enterprises	General
Performance Art Event	General
Physical Addressing Extensions	General
Proyeccion y Administracion Empresarial	General
Phi Alpha Epsilon	General
Prostate Artery Embolization	General
Prueba de Aptitud Escolar	General
Prostatic Artery Embolization	General
Prenatal Alcohol Exposure	General
Prostatic Artery Embolisation	General
Physical Activity Environments	Governmental
PALANA	Indian Railway Station
Personnel Aspect Evaluation	Jobs
Post Autistic Economics	Medical
Post-Antibiotic Effect	Medical
Policy Analysis Exercise	Military and Defence
Paine Field, Everett, Washington USA	Regional
Pain Alliance Europe	Regional
Peoria and Eastern Railway (Conrail)	Regional
Physical Aptitude Exam	Space Science
Preventive Action Engineer	Space Science
Problem Assessment Engineer	Space Science