no Variable Speed in Fan on ASRock mobo

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paulb100

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I have an old and noisy PC Iam looking at for a friend, its an old Celeron 2.6Ghz and the fan is going full belt at 3500 rpm, temps are 35'c and the fan is connected to the 3 pins on the motherboard (ASRock P4VM890) with a 3 pin connector (with 3 wires, so all are being used) - the fan speed is reported in BIOS but can not be adjusted at all anywhere.

Could it be the fan is not a Variable Speed type?

or is the Motherboard doesnt support Variable Fan Speeds?


thanks
 

Oddba11

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Fan type typically doesn't matter. Most likely the motherboard doesn't have variable speed control. I don't recall my motherboards of similar vintage have variable speed control either. At that time, it was a matter of choosing a fan that was quiet.
 

crjdriver

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I looked at the manual for that board and it does not show any type of smart fan. That is a via chipset mb and as such it is a very low end type mb. It is not going to have the options that that you find on an intel chipset board.
 

crjdriver

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Just checked the bios updates for that board and it does show an update to hardware monitor so it may be possible after a bios update. Up to you if you want to attempt a bios flash on that board; it may give an option for fan control and it may not. Here is what the bios note says;
Modify BIOS H/W monitor algorithm.
 

paulb100

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thanks for the replies guys...

I may try the BIOS update but ive a feeling it wont enable it.

Ive told him about the speed controller kit - thanks for that :)
 

managed

Allan
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You're welcome.

You do have the option of fitting a quieter fan or heatsink+quieter fan as well.
 

paulb100

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You're welcome.
I didnt know you could get them like that with the Variable Speed knob at the back - and for only £2... he is considering it as he also needs to replace the PSU which is noisier lol...

yep tried speedfan - no joy
 

managed

Allan
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I didnt know you could get them like that with the Variable Speed knob at the back - and for only £2... he is considering it as he also needs to replace the PSU which is noisier lol...

yep tried speedfan - no joy
Perhaps he should get some ear muffs instead then. ;)

I just edited my previous post to include 'You do have the option of fitting a quieter fan or heatsink+quieter fan as well.' in case you missed it.
 

paulb100

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yeah thanks for that, I think that Variable Fan Speed knob will do the job.. the CPU runs cool enough (well it would at 3500rpm hehe)
 

managed

Allan
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I had a similar control that came with an old AMD socket A heatsink & fan, it was quite noisy at full revs but slowing it down a bit made it much quieter. Hopefully your friend will get the same result.
 
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