SP(Service Pack) is a bigger and more important upgrade patch in the operating system. Windows 7 SP 1 includes updates and patches since the release of Windows 7 RTM, and two new virtualization tools: MicrosoftRemoteFX and Dynamic Memory. Dynamic memory is an enhancement of Hyper-V function in Windows Server 2008 R2, which can help IT administrators to centrally manage all available memory on physical hosts and dynamically allocate it to virtual machines. RemoteFX is the latest function of Microsoft desktop virtualization stack, which can provide a richer and more transparent desktop virtualization experience. The RemoteFX function is independent of all other graphics stacks and supports all displayed content, including Silverlight or Flash content. It enhances the hardware experience of end users through USB redirection.