Last article we talked about the physical aspects of memory, how it communicates with different components, and how RAM chips work. This time we will combine that with how the memory within the CPU works. CPU cache CPU speeds have increased over the years while the speed of RAM chips hasn’t increased in the same pase. As we went over in the last article this is not because there is no faster RAM but because it wouldn’t be economically viable. Therefore it is more common to choose a lot of relatively fast RAM over a small amount of very fast RAM because it is much faster than accessing data on disk so having more space to put stuff in RAM helps us speed up our applications.