Cache memory is a type of fast RAM that a computer processor can access more quickly than regular RAM. It stores recently accessed data from main memory to allow for faster future access if needed again. Cache memory is organized into levels based on proximity to the processor, with L1 cache being fastest as it is located directly on the CPU chip, and L2 cache being next fastest located either on the CPU package or motherboard. This memory hierarchy helps improve a computer's overall performance by reducing the time needed for processors to access frequently used data.

1. BY
Zalaludeen MJ
Cache Memory

2. Definition of Cache Memory
Cache memory is random access
memory (RAM) that a computer
microprocessor can access more
quickly than it can access regular
RAM. As the microprocessor
processes data, it looks first in the
cache memory and if it finds the data
there (from a previous reading of
data), it does not have to do the more
time-consuming reading of data from

3. Levels of Cache Memory
Cache memory is sometimes described in levels
of closeness and accessibility to the
microprocessor. An L1 cache is on the same chip
as the microprocessor. L2 is usually a separate
static RAM (SRAM) chip. The main RAM is
usually a dynamic RAM (DRAM) chip.
In the sixth generation processors both L1 and L2
are integrated in the CPU package to reduce the
access time and improve the performance further.
The L2 on the mother board works at the mother
board bus speed and the L1 Cache inside the
CPU works at half the speed of the CPU clock