That thing is called an inductor, which is a very common electronic component. Its function is to prevent alternating current from passing through and allow direct current to pass through. Under the radiator is a 3-pin or 8-pin CMOS tube (which is equivalent to a switch). The chip controls the on and off of the CMOS tube, and then filters it through this inductor. Due to the continuous switching in the front, the current drawn is definitely not stable. The output electricity is a wave of "bow" rows. Then the inductor is used to shape the electricity of these "bow" rows, so that the current passing through the inductor becomes "one wave". "The current flows very smoothly and is then supplied to the CPU, because the wavy current is very unstable and has a great impact on things like the CPU. Therefore, the CPU must use a very stable current to work stably.

If it breaks, it will cause unstable current, which will burn out the CPU, or there will be no current output or unstable output, blue screen of death, etc. But generally don't worry, that thing will basically not be broken, and at most it will be soldered (this phenomenon is more common on notebook motherboards. It rarely occurs on desktop computers). In other words, on a desktop motherboard, unless you use violence on it, there is basically no need to worry about it breaking. Its black material is a kind of magnet, and the inside is very thick copper. This picture shows a semi-enclosed inductor. Yours is fully enclosed and you can see its structure. Such thick copper.

How could it possibly break if it’s so tightly wrapped, right?