Categories



Still have a problem? Ask for help at our discussion forum.

Search


Advanced Search

 »  Home  »  Computer Encyclopedia  »  What is 32-bit / 64-bit CPU?
What is 32-bit / 64-bit CPU?
Published  06/30/2011 | Computer Encyclopedia | Rating:
What is 32-bit / 64-bit CPU?
"32/64-bit" refers to the width of the address bus and registers used by the CPU core. A 64-bit CPU has a 64-bit wide address bus and 64- bit wide registers. CPUs access data in the RAM by using the address bus. The breadth of the bus influences the amount of RAM that can be addressed. A 32-bit bus allows a maximum of 4 GB of RAM to be accessed. A 64-bit CPU, obviously, allows for more RAM to be used - about 16 exabytes (1 exabyte = 1,000,000,000 gigabytes, approximately). A 64-bit register can store 64 bits of data simultaneously. To fully utilise a 64-bit CPU, the operating system and application need to support the 64-bit mode of operation.
How would you rate the quality of this article?
1 2 3 4 5
Poor Excellent

Verification:
Enter the security code shown below:
img


Add comment
Comments


Popular Articles
  1. List of IrfanView Shortcuts
  2. When replying to a message in Outlook, a copy goes into the Inbox
  3. Precautions to take while using internet in Cyber Cafes
  4. List of uTorrent Shortcuts
  5. BIOS Beep Codes for AMIBIOS (American Megatrends Inc.) and Award BIOS
No popular articles found.