This means pwm fans can go a lot lower duty cycle, good fans getting under 20%. The longer the 'on' state, the faster the fan spins. So unless a pwm fan is at 100%, anything less is a constant state of trying to start. With pwm, the 4th wire is the pwm signal wire. So if setting a 3pin fan on a pwm header, that fan gets a constant 12v. Since bios really can't differentiate exactly what a 3pin fan needs, it defaults to a safe minimum voltage, 7v which is 60% duty cycle.Ĥpin PWM is the opposite. Most mediocre case fans need 7v to start the blades moving. Max speed being 12v, minimum speed on good fans is 5v. 3pin fans are analog, the rpm is directly related to voltage. Question 4: Is all fan headers on the motherboard support AI Cooling?Īnswer 4: Fans need to be connected to the following headers for Al Cooling control: CPU_FAN / CPU_OPT / CHA_FAN / M.2_FAN / H_AMP / RAD_FAN, the actual fan headers varies by models.It's the difference in the fans. Question 3: Which model supports AI Cooling function?Īnswer 3: ASUS Intel Z490 series motherboards supports AI Cooling function. Refer to the link below for the steps to install and uninstall the AI Suite 3. Step 2: Uninstall the AI Suite 3, and install AI Suite 3 again. Step 1: Open Fan Xpert 4 in AI Suite 3, and do the fan tuning again. Question 2: I am unable to set up the rotating speed through Fan Xpert 4. Step 4: Contact ASUS service center if the steps above are unable to fix the problem. Step 3: Plug another fan to check if the card is working. Step 2: Make sure all the cables plug properly. Step 1: Open Fan Xpert 4 in AI Suite 3, do the fan tuning again. Question1: What to do when fan is not working? Al Cooling will decrease the fan rotating speed when system is at stable status. AI Cooling function is a new feature that applies on ASUS Intel Z490 series motherboard. Use RPM fix mode, toggle the arrow to set up the rotating speed.ġ3. Click Source, select up to three thermal sources, and the fan speed will automatically change based on the highest temperature.ġ2. Click the Auto-Fan Stop, fan will stop at very low RPMs.ġ1. Under the Smart mode, you can also set up the spin up/spin down time to prevent rotating speed from vast change within a short period of time.
Click the Smart mode, and you can move/drag the blue dot to adjust the rotating speed.ġ0. Click left/right arrow key to choose the fan.ĩ. User can also choose one specific fan to set up its rotating speed.
Mode that user choose will apply to all the fans.ħ. User can choose default mode: Silent/Standard/Turbo/Full speed from the list. Tuning process is finished when the screen shows Available.Ħ. Click Fan tuning to apply the suitable setting on all of fans.ĥ. How to use Fan Xpert 4 in AI Suite 3 to control the fan ?ģ. Fan Xpert 4 in AI Suite 3 is used to control all the fans that connect to the motherboard, user can adjust rotating speed of fans to customize the need.
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