System Processes

I have a bunch of system processes running on my computer(s). 35+. I am sure I dont need all of those running all of the time. A while back someone posted a link that explained what all those abreviated .exe’s are and if you need them running and how to stop them from running automatically. DOes anyone happen to have that link or know of one? Or know how to help me?

Just trying to optimize my laptop and older machines for a screamernet render farm.