Depends on the rest of your hardware… Best bet is to google your motherboard model and see what the options are. I’m not that good at this sort of thing 😉 But mine was dead easy, I found a guide on a website and from then it was mostly trial and error. Oh but I did fit a gigantic cooler to it too as it was really noisy otherwise trying to keep cool. This one runs at 3.4ghz reliably and has done for years, the standard speed is 2.4hz so it’s a pretty big difference.
If you want to get the best results it’s time consuming but I’ve never really bothered, I just settled for a good quick reliable result.
It’s pretty noticable the difference, I mainly use this for games but the video stuff gives it the main test. Put it this way, from time to time the overclock falls off the settings for some reason, never figured out why but as soon as I start messing about with videos or recent games, I notice it… Takes about a quarter longer to process a video, struggles with multiple applications where normally it doesn’t, stuff like that.