I've often seen people have a little window that has your pc's temperature and memory usage and things like that.

I tried doing some research on it, but couldn't really find anything.

Does anyone know where I can download one?

MSI Afterburner comes built in with a pretty good one.

https://gaming.msi.com/features/afterburner

I was looking for something a bit cleaner like this one

I honestly don't recommend Afterburner because of the OCing tools in there; it is possible to accidentally fuck your shit up.

I personally use HWMonitor and it is amazing: http://www.cpuid.com/softwares/hwmonitor.html

thank you kyure and chilledon

I found a good one on rainmeter though. Thanks for the responses.

Yep no problem, you can reopen this if you anymore help!