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I have an Asus Z690-f Wifi motherboard. I want to connect the exhaust fan to the CPU_OPT fan output.

Selahattin
Level 7

‎01-18-2024 09:17 AM

I have an Asus Z690-f Wifi motherboard. I want to connect the exhaust fan to the CPU_OPT fan output. Will I have any problems?

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4 REPLIES 4

JohnAb
Level 17

‎01-18-2024 02:39 PM - edited ‎01-18-2024 02:41 PM

Check the power ratings for each fan header but I think that all fan headers are 1W and the water pump header can supply 3W. Please check though, that's from memory, but I think you'll be fine. 

Z690 Hero, 12900K, BIOS 4001, MEI 2433.6.3.0, ME Firmware 16.1.35.2557, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.
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JohnAb
Level 17
In response to JohnAb

‎01-18-2024 03:27 PM

Sorry, I meant 1A (12W) and 3A (36W). What an idiot I can be. But my answer still stands, the CPU-OPT fan header should be all good for an exhaust fan. 

Z690 Hero, 12900K, BIOS 4001, MEI 2433.6.3.0, ME Firmware 16.1.35.2557, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.
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Silent_Scone
Super Moderator

‎01-18-2024 11:41 PM

It's worth mentioning that CPU_OPT runs in sync with CPU_FAN, which the temperature source cannot be changed for and is tied to CPU/Package temperature. To control the exhaust fan independently, you'd need to utilise another header. 

9800X3D / 6400 CAS 28 / ROG X870 Crosshair / TUF RTX 4090
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Selahattin
Level 7

‎01-19-2024 08:36 AM

Thank you to my friends who responded.

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