PROCESSORS GET HOT, which means you need to cool them. We’re using the stock fan Intel provides with its non-unlocked processors. It’s more than enough to keep our build happy. Usually, we’d apply a small dot (half a pea size) of thermal paste in the middle of the processor before attaching a cooler of some description. However, in this build, the stock Intel cooler has thermal paste preapplied to the bottom. Simply remove the plastic cover on the heatsink, line up the four pegs on each corner of the fan with the holes in the motherboard surrounding the CPU socket, and push them into place. Once there, rotate the pegs counterclockwise to lock it in place. Then run the CPU fan cable to a PWM fan header on the motherboard. These look like four pins, and are usually labeled. We recommend you install this into the CPU one. There’s a notch on the cable to stop you plugging it in the wrong way, and you may need to remove the cable from the clips holding it on to the CPU fan to reach around the other way, as we have here.