- Oct 24, 2013
- 12
- 0
- 10,510
I have just replaced the 4pin PWM fan on my CPU, as the stock one was a bit too noisy on my ASUS P5QL Pro motherboard.
The new fan is correctly connected to the CPU fan header (4 pin to 4pin).
It spins at max speed (3500 rpm) a few seconds after startup (same if I go into BIOS or into Win10 x64), which makes it crazily noisy.
No matter how long I wait, the fan stays at c3500rpm. CPU temp about 35deg at startup, drops to 25deg after a few mins.
If I sleep and wake up, reboot, or hibernate, the fan then spins quietly as soon as the PC starts up again. Speed drops to about 800rpm where it sits quite happily (if I go into BIOS or windows). it ramps up and down a little depending on CPU temp. Once it's in this state, I'm happy as it's nice and quiet.
I'd like to avoid having to "double-boot" my machine every time if possible!!
Any help much appreciated. If the advice is it's a a faulty fan I'd appreciate recommendations for a ultra quiet replacement.
I never had any issues like this with the old fan.
In the BIOS, I have ASUS Q fan control set to 'enabled' and 'silent' (unchanged from before). Setting the other profiles doesn't change this behaviour.
OS, Disks, BIOS settings all unchanged. (Though I did upgrade my PSU at the same time.)
Incidentally I can't seem to find any version of ASUS AI suite to control the fan - nothing seems compatible with both Win 10 and my aging motherboard (tried v1, v2 and v3 of AI suite)
I have never previously used any software to control the fan speed, I've just relied on the BIOS setting.
The new fan is correctly connected to the CPU fan header (4 pin to 4pin).
It spins at max speed (3500 rpm) a few seconds after startup (same if I go into BIOS or into Win10 x64), which makes it crazily noisy.
No matter how long I wait, the fan stays at c3500rpm. CPU temp about 35deg at startup, drops to 25deg after a few mins.
If I sleep and wake up, reboot, or hibernate, the fan then spins quietly as soon as the PC starts up again. Speed drops to about 800rpm where it sits quite happily (if I go into BIOS or windows). it ramps up and down a little depending on CPU temp. Once it's in this state, I'm happy as it's nice and quiet.
I'd like to avoid having to "double-boot" my machine every time if possible!!
Any help much appreciated. If the advice is it's a a faulty fan I'd appreciate recommendations for a ultra quiet replacement.
I never had any issues like this with the old fan.
In the BIOS, I have ASUS Q fan control set to 'enabled' and 'silent' (unchanged from before). Setting the other profiles doesn't change this behaviour.
OS, Disks, BIOS settings all unchanged. (Though I did upgrade my PSU at the same time.)
Incidentally I can't seem to find any version of ASUS AI suite to control the fan - nothing seems compatible with both Win 10 and my aging motherboard (tried v1, v2 and v3 of AI suite)
I have never previously used any software to control the fan speed, I've just relied on the BIOS setting.
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