There are various types of capacitors on the graphics cards, nothing more than filtering, energy storage, bypass, and decoupling. This is also the main function of capacitors. For example, the large electrolytic capacitor on the power supply is used for energy storage. It is to store the electric energy in the capacitor first, and then release it. In this way, if the power supply is unstable, or the current is large and small, the capacitor can smooth the current. Generally, filtering and energy storage exist at the same time. The capacitance is generally a few hundred microfarads or thousands of microfarads.
Bypass, on the power supplied by the power supply, it will inevitably be interfered. In addition, there are various large and small chips on the graphics card. Each chip is afraid of interference, but it will also cause interference. For high frequency and low frequency, bypass is The high frequency part of the interference is introduced from the positive pole of the power supply to the negative pole through the capacitor, so that the high frequency part is filtered out. This capacitor is generally a few microfarads or a few fractions of a microfarad.
Decoupling is similar to bypass. Due to the different power consumption of each chip, the current may fluctuate high and low, which will inevitably affect the operation of other circuits. In order to prevent interference between each level, it is in the chip Connect a capacitor near the power supply pin. This capacitor may be tens of microfarads or 100 microfarads. The role of this capacitor is similar to that of energy storage.