If you have been shopping for a computer, then you have heard the word cache. Modern computers have both L1 and L2 caches. You may also have gotten advice on the topic from well-meaning friends, perhaps something like Donâ„¢t buy that Celeron chip, it doesnâ„¢t have any cache in it!. Caching is a technology based on the memory subsystem of your computer. The main purpose of a cache is to accelerate your computer while keeping the price of the computer low. Caching allows you to do your computer tasks more rapidly.