...You can view information related to your processor, bios, operating system, hard drive, memory usage, optical drives, network adapters and more. Each of the sections provides some at-a-glance general information, but for each, the sector can be expanded allowing for a more in-depth look. Sysinfo also includes a section for battery details making it useful even for laptop users.
In closing, Sysinfo is a truly easy to use resource for those that like to keep informed about all aspects of their machine.
Thanks to MajorGeeks for this awesome description ;)