Cache memory and Virtual memory

S. No.	Parameter Difference	Cache Memory	Virtual Memory
1.	Definition	Cache Memory is the high speed of computer memory that reduces the access time of files or documents from the main memory.	Virtual Memory is a logical unit of computer memory that increases the capacity of main memory by storing or executing programs of larger size than the main memory in the computer system.
2.	Memory Unit	Cache Memory is defined as a memory unit in a computer system.	Virtual Memory is not defined as a memory unit.

3.	Size	Its size is very small as compared to Virtual Memory.	Its size is very large as compared to the Cache Memory.
4.	Speed	It is a high-speed memory as compared to Virtual Memory.	It is not a high-speed memory as compared to the Cache Memory.
5.	Operation	Generally, it stores frequently used data in the cache memory to reduce the access time of files.	The virtual memory keeps those data or programs that may not completely be placed in the main memory.
6.	Managem ent	Cache Memory is controlled by the hardware of a system.	Whereas the virtual memory is control by the Operating System (OS).
7.	Mapping	It does not require a mapping structure to access the files in Cache Memory.	It requires a mapping structure to map the virtual address with a physical address.

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