What does SYS fan mean?

System Fan Header. Also known as SYS_FAN, and Chassis Fan, System Fan Header is used for connecting case fans to the motherboard. It provides the connected fans with voltage control, speed control and monitoring capability.

Is Cha fan the same as CPU fan?

Well… the CPU fan is for the fan on the CPU, while the chassis fan is for fans on the case (aka chassis). All right, enough with being a smartass. Chassis fans are typically ‘dumb’ fans which spin at a specific speed. If you want your fan to spin slower/quieter then you add a fan line resistor.

What is the cha fan?

CPU_OPT, standing for “CPU Optional”, is mostly used when you have more than one fan on your cooler/radiator and you need someplace to plug it in. It’s basically CPU_FAN without the “not booting if nothing is connected to it” part.

What is Cha fan in motherboard?

Asus refers to them as chassis fans or CHA-FAN. I have heard of other motherboards refer to them as case fans. Regardless of what name you call it, these are the headers you use to plug in the fans that are used to cool your enclosure or case.

Can CPU fans go cha fan?

it depends on which fan….. the fan on the cpu cooler NEEDS to be connected to CPU FAN, only way motherboard can detect if that fan stops working. Other fans it really doesn’t matter…

Can any fan be used as a CPU fan?

you can use any fans you like, but there are a few things you need to be aware of to yield best result. your cooler uses a push pull setup, (front fan push air through the fins and the back fan suck the air out).

What is a PWM fan?

Pulse width modulation (PWM) fans are DC fans with an extra wire for PWM. PWM fans are 4-pin fans where the fourth wire sends a PWM signal to the fan motor. The PWM signal is the control input of the PWM fan. The control input is usually an open-drain or open-collector output with a 5 V or 3.3 V pull-up.

Are CPU fans interchangeable?

AMD AM2, AM2+, AM3, AM3+, FM1 and FM2: Conveniently, almost all modern AMD socket types use interchangeable CPU heat-sink/fans. If you have one of these AMD models, almost all heat sink/fans work interchangeably, provided they can handle the heat produced by the CPU.

Can you put a 3 pin fan into a 4 pin header?

Please Note: You can connect a 3 Pin Fan to a 3 Pin or 4 Pin header on the motherboard. The fan will function normally no matter type of fan header is used.

Can I use a PWM fan without PWM?

If no PWM signal is present, almost all fans will work on 100% of power, while most pumps used in water cooling will operate at some medium speed. Meaning, if you want to run the pump on full power, you need to hook it up to a PWM signal that is set on 100% duty cycle.

How do I know if I have PWM or DC fans?

PWM fans are very similar to DC fans but differ in one key aspect: They have an extra pin for pulse width modulation. This fourth pin takes input from the motherboard to directly control the fan’s speed. PWM fans work via repeated pulses of power.

Are PWM fans worth it?

In many cases, PWM versions of fans cost only a few dollars more. For some, this alone can make builds loud when they should be silent. Non-PWM fans, at worst, will run at max speed if the motherboard doesn’t have voltage control settings.

What is a non-PWM fan?

In short, PWM (4 pins) can adjust their rotating speed automatically according to the temp of you CPU, Motherboard, … It ramps up when the temperature rises and slows down when the temperature drops, just like a CPU fan. Non-PWM (3 pins) has to be set manually to spin to a certain % of speed.

Are all 4 pin fan headers PWM?

All 4 pin fan headers are NOT PWM. It has become common practice to use 4 pin headers these days, but Asus for example reports that their 4 pin headers for example are NOT PWM…..

Do 3-pin fans have speed?

The speed of BOTH 3-pin and 4-pin fans can be controlled, but the method is different for the two types. For 3-pin fans, the connections to it are Ground to Pin #1, +VDC (varying) to Pin #2, and Speed signal on Pin #3.

Are PWM fans quieter?

PWM fans will generally be quieter than DC fans because sometimes you’ll hear more electrical noise in some motors when they operate below a specific voltage. Moreover, as I said above, PWM fans can achieve much lower speeds, which again helps with the noise.

What is the advantage of PWM fans?

PWM are better for speed control because instead of using voltage to change the speed (which can damage some fans or simply not work) they turn the motor on and off rapidly so that the fan never reaches full speed.

Are NZXT Case Fans PWM?

NZXT’s case only comes with two and they don’t do PWM. Meanwhile, if you’re looking for a case with this more traditional form factor, there is Fractal Design’s Meshify 2 Compact – a case that also comes with three fans and much better internal design, better radiator support, and also costs – you guessed it – $110.

Are laptop fans PWM?

As stated before, in addition to the power, ground, and tach signal, 4-wire laptop/notebook cooling fans have a PWM control input, which is used to regulate the speed of the fan, instead of switching the power to the entire fan on and off.

Can you run a DC fan in PWM mode?

To your question, no. Any 3-pin fan connected to a header using the PWM Mode will always run full speed because of the differences in design. There is another option.

Are Noctua fans PWM or DC?

Connector: Noctua fans are available with standard 3-pin and 4-pin PWM connectors. The latter can be identified by the “PWM” designation. Choose 4-pin PWM versions if you would like to use the PWM fan speed control of your motherboard (or other devices).

What is 4pin PWM?

A 4-pin PWM fan does more than the 3-pin’s power, ground, and signal connections to the motherboard—it also has a fourth wire that provides feedback from a built-in tachometer sensor to the motherboard.