Windows desktop background: how to have system info displayed

That appears to be SysInternals' BGInfo.

It's a stand-alone executable that you place in your StartUp directory. You can create a Windows scheduled task to refresh it at an interval you choose.

BGInfo basically writes a new desktop bitmap image every time it is executed.

You can pick and choose the data presented, its fonts, colors, etc.

Rainmeter is popular once you've skinned it to show system data.