Waht is cache memory?
Answer:
Hello:
The idea behind a cache is to have important, repeatedly accessed information available in a fast RAM-type memory that is specific to disk I/O operations. Having some of the repeatedly accessed data in RAM is faster than having to fetch it from disk over and over again. L1 cache is used in a microprocessor for data and repeated instructions. L2 cache is special RAM on a bus on the motherboard for use by more than just the microprocessor- it can be used by file system operations (disk I/O) directly. L3 cache is simply what L2 used to be...now that more and more processors are incorporating some level of L2 cache directly on board.
Hope this helps!
Cheers!
yeah, here the answer
check this page out'
http://en.wikipedia.org/wiki/cache_memor...
cache memory is remembering how much money you had when you left the bar. Then waking up and realizing you were WAY off and cant afford a breakfast at Denny's
cache is simply a temp memory storage, mostly for CPU's that can hold instructions. L1 is built into the CPU, most newer CPU's have small amounts. L2 is external and i usually very big. L3 is even more memory built in between the CPU and the RAM.
Cache memory is a small bank of faster memory typically located very close to or within a CPU. Its role is to buffer the most recent accesses to RAM so that if the data is requested again, the CPU doesn't have to wait extra time to get the data from RAM (which is generally much slower than getting it from cache).
The number of levels of cache depends on how the hardware designers implemented it. No levels of caching are required to make a computer work, but they certainly do help quite a bit. Most modern computers have at least two levels of cache, especially multi-core processors which generally have a small cache per CPU core and a larger, but slower cache which is shared by all of the CPUs.
The answers post by the user, for information only, RunQA.com does not guarantee the right.
More Questions and Answers ...