Anyone know a way to display the summary info on the desktop?
I'm not quite sure I understand the question; your image is showing a summary. Do you mean detailed view?
What I'm looking for is a display that just sits on the desktop showing various system temps, maybe CPU usage, RAM usage etc.
nope, sorry @jopa66 that's not something Speccy does.
it can show, one thing at a time, something in the System Tray.
a quick Google search finds plenty of program (gauges, widgets etc) that will do what you want.
Thanks anyway.