Buying a used CPU or GPU is always a risk because you never know what you're getting until you test the hardware. Thankfully, ...

The fastest, easiest way to check your CPU temp is using the aptly named Core ... includes a temperature offset to ensure universal fan speed behavior between the various Ryzen chips.

What is overclocking? Different computer processor chips run at different speeds — this is known at their "clock speed." A higher clock speed means a CPU can run more operations per second ...