Categories



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

Search


Advanced Search

 »  Home  »  Computer Encyclopedia  »  What is Cache memory?
What is Cache memory?
Published  06/30/2011 | Computer Encyclopedia | Unrated
What is Cache memory?
All CPUs presently made have two components in their die - the processing core and some memory. The memory is used to store frequently-used data so that the CPU doesn't have to wait for the data to be fetched from other, slower storage areas like the system RAM or hard disk. This temporary storage is referred to as the cache. Unlike system RAM, cache is made of more expensive Static RAM, which does not require refreshing. There can be multiple caches per CPU. The cache that is closest to the CPU core is called the Level 1 cache, and is most frequently accessed by the CPU. The subordinate cache, called the Level 2 cache, is approached only if the data is not available in the L1 cache. Some high-end CPUs also sport a Level 3 cache. Cache sizes tend to increase with their Levels, with L1 caches being smaller than L2. In current CPUs, the L1 cache tops out at 128 KB per core, while the L2 cache tops out at 8 MB per core.
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. Precautions to take while using internet in Cyber Cafes
  3. When replying to a message in Outlook, a copy goes into the Inbox
  4. List of uTorrent Shortcuts
  5. Windows 7 Startup and shutdown time
No popular articles found.