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The more fans for cooling video card, better? Analysis of factors affecting cooling effect of a video card
The more fans for cooling video card, better? Now graphics cards of different brands have different number of cooling fans, even if they are same model, so more cooling fans there are, stronger heat dissipation will be? In this article, you will analyze factors that affect cooling effect of a graphics card.
The heat dissipation of video cards can be divided into air cooling, water cooling and liquid nitrogen cooling.
In fact, air cooling of a video card is similar to heat dissipation of a processor heatsink. It is mainly aimed at GPU core, and there is also video memory and circuits. The heat from GPU is transferred to cooling fins through heat pipe, and then fan blows heat away. The video card cooler consists of four parts, divided into fans, heat pipes, copper bottoms and fins. Therefore, it is not enough to judge cooling capacity of a video card only by number of fans, cooling effect will also be affected by design and materials that dissipate heat.
Let's talk about heatpipes/copper bottom and cooling fins first
The principle is same as CPU heatsink, more heat pipes, larger diameter, higher heat dissipation efficiency. If number of heat pipes is especially large, heat pipes are also assembled on a copper base. Because GPU core is small, it is impossible to make all heat pipes touch GPU without increasing copper base, which does not only affect heat dissipation efficiency, but also wastes heat tubes. The larger contact area between heat dissipation fins and heat pipe, and larger contact area with air, better heat dissipation effect. In addition, welding process of fins and heat pipes will also affect heat dissipation. fin efficiency.
Then a fan
There are two types of graphics card fans, public version of graphics card uses a turbofan, and custom edition of graphics card uses an axial fan. The turbofan uses centrifugal force and relies on guide shell to form a closed heat conduction channel for radiator, but if speed is high, noise is very loud. The axial fan has low noise and large air volume. The strong airflow can cooperate with fins to effectively dissipate heat, which is much better than public version, so most people now use non-general version graphics cards. In addition to better heat dissipation, manufacturers tend to implement their own hardware design, appearance design, and debugging software support for non-public graphics cards.
Of course, different sizes and shapes of fan blades dissipate heat differently, so private graphics card fan designs vary. Even same brand and same series may have different fan blades. And for high-end non-public version graphics cards, it is usually equipped with 3 large fans, and at same time, different fan blades are used to combine, so as to improve efficiency of heat dissipation and not make too much noise.
In short, don't just look at number of cooling fans to dissipate heat of a graphics card. If you really don't get it, you can also read more graphics card reviews. Typically, ability of a graphics card to dissipate heat is tested. up to the limit, which can also be used as a reference.