The cache

Hello, what is a cache, does it need to be cleaned. why am i asked about it sometimes. I am brain injured so your computer=speak means garble to me. please help
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More about cache
  1. cache usually refers to a small amount of memory .
    Your processor has
    L1 data 64KB
    L1 instruction 64KB
    L2 cache general storage of data and instruction ranging from 128KB to 12MB
    L3 cache general storage of data and instruction ranging from 0MB to 18 MB
    Your hard drive also has 8MB to 64MB of cache memory.
    Almost all motherboard devices ,Ethernet, sound card or chip, modem, bus timer,USB hubs,Video card etc all have small amounts of memory referred to as "CACHE".
    There is nothing you can do for it . It is sealed in a package
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