The amount of memory in your PC is one of the key elements that dictates its performance. This is of importance when you’re working in applications that use lots of memory, such as video-editing packages, or when you have a number of programs running at once. Windows Readyboost is a clever way of adding more memory as needed using USB memory keys or Flash memory cards. When you plug in such a device, Vista will give you the option to use its capacity to boost memory.