Mac RAM from Kingston Technology, we offer a wide range of Mac, PC, Laptop & Server Memory. Please use tour Memory Selector to purchase compatible RAM for your computer. Adding random access memory (RAM) to your system is the cheapest and most effective way to make your computer run faster.Your computer uses RAM to temporarily store the data that will be processed by the central processing unit (CPU). This will give an immediate improvement in performance and allows multiple applications to run more efficiently. Also with the addition of more RAM, you will be able to keep more programs open at once, speed up program launches, and experience fewer system crashes.