Used with parts that have high power consumption What Is the Difference Between 3 Pin and 4 Pin Fans? Features That single wire is the biggest difference between 4 pin and 3 pin fans, but there are a few other things to be aware of that make them unique. It adjusts the speed and provides feedback, so noises are reduced, and your cooling system can be more efficient. The PWM wire is critically important for most modern gaming setups and any professional computer. This is used to help control the power supply of the load, which controls the rotation speed of the fan impeller. This wire is called the “ PWM wire” or the Pulse Width Modulation wire. A 4 pin fan connector is different because it has a fourth wire. Most modern computer builds, and motherboards have transitioned away from 3 pin fans and instead use 4 pin fan headers. Other than that, a 3 pin fan works the same as any other type of computer fan pins by moving hot air from the different components (like the motherboard or CPU) and pushing it out through vents. When the fan increases or decreases the voltage, the speed changes. It adjusts the level of power that gets applied to the motor by transmitting the speed of the fan impeller (the fan’s rotation) at a set voltage, typically somewhere between 5 to 12 volts in most standard fans. The tachometric signal controls most of what happens within a 3 pin fan. All of these wires work together to regulate fan speed, performance, and PC cooling. The wires are for power (first wire), ground (second wire), and tachometric signal or speeds (third wire). The name also means that there are three wires. 3 Pin vs 4 Pin Fan Connectors: Which Is Better?Ī 3 pin fan is so named because it has three pins or indicators.– Pulse Width Modulation Is the Biggest Difference.What Is the Difference Between 3 Pin and 4 Pin Fans?.
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