Encyclopedia > Memory hierarchy

  Article Content

Memory hierarchy

The hierarchical[?] arrangement of storage in current computer architectures is called the memory hierarchy. Each level of the hierarchy has shorter access times and faster data transfer ratest than the next one down.

Most modern CPUs are so fast that for most program workloads the locality of reference of memory accesses, and the efficiency of the caching and memory transfer between different levels of the hierarchy, is the practical limitation on processing speed. As a result, the CPU spends much of its time idling, waiting for memory I/O to complete.

The memory hierarchy in most computers is as follows:

See also:



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
ZIF

... integrated circuit socket requires the IC to be pushed into sprung contacts which then grip by friction. For an IC with hundreds of pins, the total insertion force can be ...