Does the power supply provide power to a CPU fan or case fan?

Does the power supply provide power to a CPU fan or case fan?

PSU fan. While the power supply (PSU) contains a fan with few exceptions, it is not to be used for case ventilation. The hotter the PSU’s intake air is, the hotter the PSU gets. As the PSU temperature rises, the conductivity of its internal components decrease.

Can you plug a 4 pin fan into a 3 pin socket?

If you plug a 4 pin fan into a 3 pin socket, the fan speed will be controlled by voltage and it’ll still work. The plugs are keyed so you can’t get the pins around the wrong way.

Do fans affect power supply?

Case fans usually use 1.8 Watts and are rated at 12 Volts. The molex connector that is usually used on the case fans is 12 Volts by standard (same as your Hard Drive and Optical Drives usually use). Unless you are adding 50 fans I doubt you have to worry about the power supply. You will be fine with the 500 Watt PSU.

Should you plug case fans into motherboard or PSU?

Power fan is for your PSU. On some units the fan will be speed variable, this is where you plug it into your motherboard to control the speed. Go ahead and plug your fans into your motherboard, advice like that is what you see in youtube comments. The worse place for computer advice ever.

What kind of power supply does a 4 wire fan use?

Following this 4-Wire Fan Description (link 1 in comments) I have connected the yellow fan power wire to the red wire on the power supply and the black fan ground to the black power supply wire. The green tach and blue PWM wires have been left unconnected to anything and are simply hanging free.

Can a 4-wire fan be plugged into a 3-pin connector?

The PWM wire is always on the end to allow a 4-wire fan to be plugged into a 3-pin connector for either no speed control or PWM control by interrupting the +power pin. BTW, the link provided in the comment by M. Y., http://pcbheaven.com/wikipages/How_PC_Fans_Work/, with all of its edits, confirms all of this.

Why is the PWM wire on the end of the fan?

The PWM wire is always on the end to allow a 4-wire fan to be plugged into a 3-pin connector for either no speed control or PWM control by interrupting the +power pin.

What happens when I connect a fan to an outlet?

When I connect the power supply to an outlet the fan “stutters” forward a single pulse like it is overcoming a single pole on the motor. I would estimate the turn is something like 30 degrees of a full revolution, but I have not measured this accurately. After the initial “stutter” or “pulse” in the right direction the fan stops moving.