why does heat harm our computer?

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High temperature against the computer can be divided into two main parts: 1 of semiconductor electronic components (CPU, graphics chip, motherboard chipset, etc.) against (the focus of this meeting) 2, the hazards of CRT We first take a look at the most important high temperature against the computer, that is, on the dangers of semiconductor electronic components. According to e-learning theory, increase the frequency (in stability) for the life of semiconductor electronic components will not be affected, but high frequency, it will generate more heat, the electronic components such as CPU, memory, etc., the surface area are very small, more heat is generated in this small gathering places, such as good will have a very high heat temperature, which gives rise to a "mobility" phenomenon, and now the computer is getting higher and higher frequency, and then together with a group of DIY and our performance in order to obtain more overclocking and voltage, so that will be more heat generated. Heat caused by the "electron transfer" phenomenon (electromigration) may damage the semiconductor electronic components. In order to prevent "e-migration" phenomenon, we should control the CPU's surface temperature below 50 degrees Celsius, so the internal CPU temperature can be maintained at 80 degrees Celsius, "e-migration" phenomenon would not have happened. "Electron transfer" phenomenon is not immediately damage the chip, which chip damage is a slow process, more or less would reduce the CPU's life, if you continue to let your CPU temperature is very high in the work, then your CPU may ... Then the "electron mobility," What in the end? "Electron mobility" is the area of e-science in the early 1960s, was widely known, is the movement of electrons caused by migration of metal atoms. High intensity in the current conductor, the most typical is the IC's internal circuitry, the electronic flow of the metal atoms to the top of a momentum, made out of metal atoms around the metal surface flows, the results lead to the metal wire on the surface the formation of holes (void) or mound (hilllock), causing permanent damage, this is a slow process, in the event, the situation will become more and more serious, in the end it will cause a short-circuit the entire circuit (short), the entire integrated circuit on the reimbursement. "Electron transfer" phenomenon affected by many factors, one of which is the strength of current, the higher current intensity, "electron mobility," the phenomenon of the more remarkable. From the history of the development of integrated circuits, we can see that, in order to integrated circuits such as the CPU core to reduce the need to do more fine lines thinner, so the current strength on the line of great change, so as to bring the flow of electronic metal atoms on the momentum of the very significant change, metal atoms, it is easy to go from the surface and flows out to form a hole or mound. Another factor is the temperature, high temperature contribute to "electron mobility," the generation, which is why we want to maintain the CPU temperature at 50 below(hand feels the temperature). As for how the impact of temperature is "electron mobility," the friends who are interested to study their own. Next let us look at the hazards of high temperature on the cathode-ray tube: CRT display as a major heat source in the ambient temperature is too high it is the work of performance and service life will be greatly reduced, some breaks may be due to the solder joint caused by solder melted off way to display the work of instability, at the same time will accelerate the aging of components, and ultimately lead to the display range , re-burning may breakdown or other components.