What is Windows 7 SP1?
Windows 7 Service Pack 1 is an update that does the following:
- Helps keep PCs supported.
- Provides ongoing improvement to the operating system, by including previous updates delivered over Windows Update as well as continuing incremental updates to the Windows 7 platform based on customer and partner feedback.
- Makes it easy for organizations to deploy a single set of updates.
What is Windows Server 2008 R2 SP1?
Windows Server 2008 R2 SP1 includes RemoteFX and Dynamic Memory which provides customers with the ability to take advantage of enhanced server and desktop virtualization.Microsoft believes that virtualization is a stepping stone to cloud computing. Microsoft provides all of the necessary elements including fully integrated server, virtualization, and management solutions for customers and partners to deploy private clouds today.
You can download the service pack here
https://www.microsoft.com/en-us/download/details.aspx?id=5842