What is Cache Memory? and Start Learning about Types of cache Memory!


What is Cache Memory? and Start Learning about Types of cache Memory!

What is Cache Memory? You will probably hear about it more than once, usually abbreviated as "Cash". You may have also heard from time to time whether to delete it or not.
In this article, we will try to explain to you in easy words what is cache memory and what is its use, so that you will get basic information about this component of the computer.

What is Cache Memory?

Cache Memory is that unstable computer memory that is very close to the CPU which is also called CPU memory, all recent Instructions are stored in Cache Memory itself. It is the fastest memory that gives high-speed data access to a computer microprocessor.
Cache is used to store the input given by the user and which is necessary for the computer microprocessor to function. But cache memory capacity is very less as compared to Memory (random access memory (RAM)) and Hard Disk.

What is the importance of cache memory?

Cache Memory is very expensive and its capacity is also limited. Earlier cache memory was available separately but now the microprocessor has cache memory on the chip itself.
The need for cache memory is caused by the mismatch between main memory and CPU speed. The CPU clock is quite fast, while the access time of main memory is comparatively slow.
Therefore, no matter how fast the processor is, processing speed depends more on the speed of main memory.
Cache memory stores the program currently executing or part of it. The cache memory also stores temporary data which may often be required by the CPU for manipulation.
 Cache memory works according to various algorithms, which decide what information it has to store. These algorithms work on the possibility of deciding which data will be most needed.

Types of Cache Memory

The types of Cache Memory are divided into different levels which are L1, L2, L3:
L1 cache or Primary Cache
L1 is the primary type cache memory. The size of the L1 cache is very small compared to others which range between 2KB to 64KB, depending on the computer processor.
It is embedded in the processor chip as a CPU cache. Instructions required by the CPU are first discovered in the L1 Cache.
L2 cache or Secondary Cache
L2 is the secondary type cache memory. The size of L2 cache is more capacious than L1 which is between 256KB to 512KB. After searching the instructions in L1 Cache, if it is not found, then the computer microprocessor is searched in L2 cache.
L3 cache or Main Memory
The L3 cache is large in size but is slower in speed than L1 and L2, its size is between 1MB to 8MB. In multicore processors, each core can have L1 and L2, but all cores share a common L3 cache.

Advantage Of Cache Memory

The advantages of cache memory are:
  • Cache memory is faster than main memory.
  • It consumes less access time than main memory.
  • It stores the program that can be executed within a short time.
  • It stores data for temporary use.

Disadvantage Of Cache Memory

  • Some of the disadvantages of cache memory are as follows:
  • Cache memory capacity is limited.
  • It is very expensive.

Difference Between Virtual and Cache Memory? (Difference between cache memory and virtual memory)

There are some differences between Virtual Memory and Cache Memory. Which are explained to you below?
Size: The size of Virtual Memory is more than the size of Cache Memory.

Memory Management: Virtual memory is managed by the Operating System and is a part of the Operating System. Cache Memory is fully managed by Hardware.

Nature: Cache is a Memory Storage Unit and is a Virtual Memory Techniques.

Mapping: Virtual Memory requires Mapping Structure to map Virtual Address to Physical Address but Cache Memory does not require Mapping.

Memory Managing: is managed by the Virtual Memory Operating System. Cache Memory is managed by Hardware.

So there are some such differences between Virtual Memory and Cache Memory which you go up.
How did you like this article?
We hope that you liked this article what is Cache Memory and now you have got basic information about cache memory.
In this article, we have also told you about the types of Cache Memory so that you can know how many types of Cache Memory. Along with this, we have given you information about Advantage and Disadvantage of Cache Memory.
If you have any questions related to our article Cache Memory or you want to give any suggestions, then you must tell us through the comment.
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