how do i know what kind of new processor to get?

i know that you need one to fit the socket but i need to know how much volts and ect. beacause i dont want to mess up my computer

i use cpu-z when overclocking
There are programs that tell you the core voltage. One of the best programs I know is called Everest, and it tells you a lot of other details about your hardware. I think there is a free trial version you can get, which you can use to determine the voltage. However, I'm not sure what effect the voltage has on the computer