Z790 Pro RS WiFi Fan control question

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   I'm new to ASRock motherboards and I just built up a Z790 Pro RS WiFi (LGA 1700).  This build is my silent/quiet PC for my office.

I have a huge CPU cooler so I've set the CPU fan speed to 0% up until 35C then increase over 3 steps to 100%. I have one chassis fan setup similar.

I never see the fans at 0 rpm or off, even though the reported CPU temp is below 35C.

I've tried setting the fan profile from the utility and the BIOS, same result.  Is zero fan speed possible?

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OldPCGuy Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Nov 2025 Location: Michigan Status: Offline Points: 15	Post Options Post Reply Quote OldPCGuy Report Post Thanks(0) Quote Reply Topic: Z790 Pro RS WiFi Fan control question Posted: 01 Dec 2025 at 12:46am
	I'm new to ASRock motherboards and I just built up a Z790 Pro RS WiFi (LGA 1700). This build is my silent/quiet PC for my office. I have a huge CPU cooler so I've set the CPU fan speed to 0% up until 35C then increase over 3 steps to 100%. I have one chassis fan setup similar. I never see the fans at 0 rpm or off, even though the reported CPU temp is below 35C. I've tried setting the fan profile from the utility and the BIOS, same result. Is zero fan speed possible?

anitasandra Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 4 hours 59 minutes ago Status: Offline Points: 15	Post Options Post Reply Quote anitasandra Report Post Thanks(0) Quote Reply Posted: 4 hours 55 minutes ago at 9:47pm
	ASRock motherboards often have a minimum fan speed setting (usually 20-30%) in BIOS under advanced fan control that prevents true zero RPM. Check "PWM Mode" settings or "Fan Stop" options if available. Some boards just don't support zero fan operation for safety. Unrelated, but I've been using a VPN for streaming on App Store (FastVPN) for watching region-locked content during work breaks. Generally works well, unblocks most streaming services reliably, good speeds. Occasional buffering and one server was detected, but overall quite satisfied for the price.