All CPU Meter is a simple and well-designed system monitoring gadget for Windows that serves as a great way to keep a regularly updated look at your most important system resources. It keeps track of CPU usage (up to 24 cores) and shows used, free and total RAM.
All CPU Meter Windows Gadget Review
It works with Windows 7 and Windows Vista.
This is a great little device, but you will need another program if you want to view temperature data:
This is an excellent resource tracking Windows gadget. There are a few other gadgets on our list that we might prefer over this one, such as CPU Meter, but overall we like it.