It just seems that Piriform cannot do wrong. I already use CCleaner and Defraggler, and now I just tried Speccy and it's a great tool. It easily replaces CPU-Z and GPU-Z, and has a cleaner aesthetic. Give it a whirl.

http://filehippo.com/download_speccy/

Long ago when I discovered CCleaner, and how amazing of a program it is, I went to Piriform's website to see what else they had to offer for free, and I downloaded both Defraggler and Speccy, not really knowing what they were but thinking, CCleaner is awesome, how could these programs not be? Speccy is awesome, it scans your system and then tells you everything that's in it, including Temperatures of things and a bunch of other random information that probably is meaningless to you, but it more than likely means something to someone else. It's a good tool if you want to install something and want to check your Spec's to see if your computer will be able to run the program. Good stuff, definitely recommend this product.

Speccy is especially good for gamers. You check your system requirements for games, and then you can double check it with Windows Game Advisor.