This post is more for those that are geeks at heart, manage test servers, or multiple PC’s in a network setting. This utility, called Desktop Info, is a portable app (just download, unzip and run), that allows you to display and monitor every kind of metric about a Windows-based system. You can actually configure this portable app to run as a screensaver. Instructions on doing that and other configuration options are included in a manual that is packaged in the zip file.
Once the Desktop Info is running you can kill it via the right click context menu or from Task Manager. Open the desktopinfo.ini file or select Configuration from the right click context menu and adjust each item in the items section to control visibility, refresh times, colors and other properties. The display updates itself automatically when you save the ini file. Desktop Info ships with a sample configuration file. The first time you run the application, the sample ini file will be copied to the working ini file. You are now free to modify it as needed using any text editor.
Source: Glenn’s Page – Desktop Info