What is Cache Memory?
Cache (pronounced cash) memory is extremely fast in memory, built a computer’s central processing unit (CPU), or beside it away on a separate chip. The CPU cache memory used for instructions that are needed again to run programs that improve the overall system speed store. The advantage of the cache memory is that not using the CPU on the motherboard system bus for data transmission. If data needs to be slowed passed through the system bus, the speed of data transmission capacity of the mainboard. The CPU can process data much faster by avoiding the bottlenecks of the system bus created.
Why is it when most programs are open and running, they use very little resources. If these resources are held in the cache, programs can work faster and more efficiently. All other things being equal, cache is so effective, the system performance for a computer with a fast processor cache can be a little lower, with benchmarks as a system with a slower CPU with more cache memory have. Cache in the CPU itself was built, referred to as Level 1 (L1) cache. Cache, which is on a separate chip in addition to the CPU, which is called Level 2 (L2) cache. Some CPUs have both L1 and L2 cache built-in and appoint each cache chip as a Level 3 (L3) cache.
Which to choose? agp versus pci-e
Cache that is faster than the CPU’s own cache is built, runs at the speed of the microprocessor itself, however, separate cache is still about twice as fast as Random Access Memory (RAM). Cache is more expensive than the RAM, but it is well worth a CPU and motherboard with built-in cache to maximize the system performance.
Disk caching the same principle applies to the hard drive, memory caching applies to the CPU. Frequently accessed disk data in a separate segment of the RAM are stored to avoid having to retrieve it from disk again and again. In this case, RAM is faster than the disk technology used in conventional hard drives. This situation will change, however, as hybrid hard drives have become ubiquitous. These drives have built-in flash memory caches. Finally, hard disks are 100% flash drives, eliminating the need for the RAM disk caching, such as flash memory is faster than the RAM.
You might also be interested in process library!
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