PC memory or RAM (random access memory) is where your computer temporarily stores the data it needs to access quickly to run programs or carry out processing tasks. Since every program you have running (including the computer’s operating system) and every browser tab you have open uses memory, the more RAM you have installed, the more apps you can run and the more effective your PC will be at multitasking. Upgrading your PC’s memory is possibly the simplest and cheapest way to increase your PC’s performance.