Yes, The 4 pin Fan speed is controlled by the temperature of your processor. With a 3 pin Fan it won't be controlled by the temperature and should run at maximum speed.
But on the latest Motherboards the 3 Pin does have speed control on the latest computer fans also. On the older motherboards normally a 3 pin fan would run at maximum without any speed control.
In the photo it shows two Fan ports.
The fan port at the bottom next to it has written CPU FAN. That is where you will connect your CPU Cooler fan to.
The Fan port above the CPU FAN port is the Chassis Fan port. That is where you will connect the Rear Computer case fan.
@xmadmike good observation. You probably solved this Users overheating issue unless the motherboard is defective and not sensing the correct CPU temperatures.
EDIT: I can tell by your first photo you have a compact or small computer case so most 3rd party CPU Cooler wouldn't fit in there. You would probably need to purchase a low profile CPU Cooler like the one you have installed now.
Hopefully a stronger CPU Fan will fix your overheating issues.
I had it in the correct area then probably it the 3 pin cause it cause I do have a older model.
so the rear fan do get a better one or leave it
The Rear fan in the photo seems to be a good fan. If that is the replacement that you installed replacing the original rear Fan case and it is better or stronger than leave it.
If the rear fan in the photo is the original one than leave it until it goes bad than replace it with a stronger rear fan.
Use the original rear Fan as a backup for the future or as a spare part like the CPU Fan if you upgrade that also.
I replaced my wife's rear fan case with a much stronger and better rear fan case when the original one burned out.
Yes but the CPU fan should have run at maximum speed unless 600 RPM is the maximum speed of your new Fractal Design CPU fan which I don't believe it is.
I don't know why the monitoring software is showing a max of 600 RPM on the CPU Fan.
Hopefully the new 4 pin CPU Fan that you ordered will run at maximum 2000 - 3000 RPM when the processor starts to get hot.
One very important fact I failed to mention.
Make sure when you install the CPU Fan that you have the Fan air direction going in the correct direction.
The air should be blowing through the CPU Cooler fins so in your case the Fan should be installed so the Fan's air direction is blowing air downwards towards the CPU and motherboard.
That way it will also cool your motherboard's VRM and surrounding electronics and hardware like your RAM Memory sticks.
If you look closely at the black frame of the fan it will tell you which direction is air flow (an Arrow). IF it doesn't show which direction is air flow, temporarily connect the fan to a Chasiss fan port and see which way the air if flowing. Mark it and then install it on your CPU Cooler.
The Cooler Master Fans does have an arrow showing the direction of air flow. Normally it is at a corner of the black frame.
put a piece of paper in front of your fan, the paper must go toward the CPU, and outward your case
Also, i don't see any CHA_FAN2 on your MB, meaning you have no intake.
Again, adjust your fan curve, use speedfan or maybe asus has an included software that allow that kind of settings
I only have one cha fan and I'm not sure if I can curve the air but I'll try to find it tmr when I get fan
Here is an explanation on how a motherboard can control the speed of a 3 pin fan. From Tom's Hardware thread: https://forums.tomshardware.com/threads/is-there-a-way-to-control-3-pin-fans.2905718/'
Actually, you MISunderstand that 4-pin fans only can be controlled.
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. To control fan speed, the mobo header must alter the voltage on Pin #2, ranging form +12 VDC (max) to about +5 VDC. (At voltage less than 5 VDC, the fan may stall and not re-start until the voltage is increased.) This method is called "Voltage Control Mode" or sometimes "DC Mode". The fan speed signal is a series of pulses (2 per revolution) generated inside the motor and sent back on Pin #3 to the mobo for counting and display. Interestingly, this signal is NOT used for actual control of the speed.
4-pin fans work differently. They still use almost the same signals on those first 3 pins, but with one important difference. Pin #2 always has +12 VDC on it, never reduced. Then the new Pin #4 has the PWM signal. Inside the fan a small chip uses that PWM signal to control the flow of current through the motor from the +12 VDC supply, thus manipulating speed. This method is called "PWM Mode".
The connectors of the two fan types are almost the same so that either type can plug into either type of mobo male header. The signals are so similar that mixing them sort of works. Obviously, of you don't mix, each type works as intended. If you plug a 4-pin fan into a mobo header that uses Voltage Control Mode the fan receives no PWM signal and cannot modify the power supplied. BUT the supply on Pin #2 is a VARYING voltage which then gets fed to the motor windings unchanged, and the motor's speed IS under control by the mobo. But the other way - plug a 3-pin fan into a header using PWM Mode - does not give control. The motor receives a fixed +12 VDC on Pin #2, and has no way to accept or use the PWM signal on Pin #4, so the fan motor always runs full speed.
Now, here's the "trick". You can NOT tell from the count of pins on the mobo header which type of control it is using. You have to play detective with the mobo's manual. For yours, see p. 15 where the diagrams are shown for the three SYS_FAN headers that have 4 pins. It says that the signal on Pin #4 is "VCC", whereas the label for the CPU_FAN header has the label "Speed Control" on its Pin #4. This means that the CPU_FAN header IS using the PWM Control system, but the SYS_FAN headers are NOT - they are using Voltage Control Mode. In other words, although the fan headers have 4 pins to make you feel comfortable, they actually operate exactly like 3-pin Voltage Control Mode headers. Why would they do this? Well, look at what I said above about "mixed" systems. A header using Voltage Control Mode CAN control BOTH fan types. So, no matter which fan type you bought, the mobo SYS_FAN headers CAN control the speed of them with this design. (It is a problem with one specific case - IF you are trying to use a 4-pin HUB for many fans - but you are not doing this.)
So, bottom line - your 3-pin fans WILL be controlled by your existing mobo SYS_FAN headers with no problem as long as you leave the fan port configurations in BIOS Setup (manual p. 27) in their default settings: "Normal".
On my motherboard all of my 3 pin Chassis fans are speed controlled by my motherboard. This is verified by monitoring software. The fans increase or decrease depending on the motherboard's temperature sensors.
it a little confusing but where can I change the speed of fans and I'm getting the order for the fan today like do I go into bio and check the fan seetings if anything is wrong for the fans