cpu heatsink fan ramp up weird [Solved]

[plopke]

installed a new motherboard cpu for the parents , i3 6300 -stock heat sink- B150-HD3P gigabyte , but the ramping of the cpu heatsink fan is weird.

https://www.youtube.com/watch?v=7bDFP-MdU_k

I found some older post on intel/tomhardware forum stating it is normal but no work around , or that old that the links don't work anymore.

Link down :

http://www.intel.com/support/processors/sb/CS-033607.htm

The Start up is normal. Please see above URL for more information on this.

Tomhardware old answer

It's just an issue with a certain model of the intel stock fan. I work at an IT distributor which assembles PCs and we have this kind of issue a lot. We have identified at least 3 different models of Intel stock fans and one of them exhibits this behaviour.

We narrowed it down to that particular fan needing more voltage to start spinning. If you had your case open you would see that the fan tries to spin up 2 times before going full speed. I assume that it will need 10V+ to start spinning, and I would guess that the board sends 5V, then 7V and lastly 12V, putting it on full speed.

No need to worry though, your system is fine and everything is in check. If you do not like the "startup acoustics" though you could always install a cheap aftermarket heatsink.

I did ran the Intel diagnostic tool successfully and the cpuz stress bench din't go higher than 58C after running it for a couple of minutes.
So i guess it is normal but any solution I could look into to not have this kind of behaviour?

UPDATE SOLVED : Normal behaviour, no option in bios to change it.

UPDATE 2 : After some Intel account administration/migration problems and vacation they send me a new heatsink for free , a FOXONN updated model instead of NIDEC.
https://www.youtube.com/watch?v=adqcBiwYd80 , and durign stress test around ± 10 C cooler. Smooth post ramp up , better cooling in general and fan speeding up in more logical way when stressing cpu.

 

[BonzaiDuck]

installed a new motherboard cpu for the parents , i3 6300 -stock heat sink- B150-HD3P gigabyte , but the ramping of the cpu heatsink fan is weird.

https://www.youtube.com/watch?v=7bDFP-MdU_k

I found some older post on intel/tomhardware forum stating it is normal but no work around , or that old that the links don't work anymore.

Link down :
Tomhardware old answer


I did ran the Intel diagnostic tool successfully and the cpuz stress bench din't go higher than 58C after running it for a couple of minutes.
So i guess it is normal but any solution I could look into to not have this kind of behaviour?

Spend less than $30 and put a Hyper 212 EVO on it. Check first to make sure it fits the case, but with that cooler, not a likely problem for tower ATX cases -- mid- or full-.

After that, you could choose replacing the EVO's own fan, but for your purposes, it shouldn't be in any way necessary.

 

[JeffMD]

Nothing is wrong, everything is fine.

 

[BonzaiDuck]

Nothing is wrong, everything is fine.

Actually I agree with that wholeheartedly.

Many of us have an obsession with boot-up time in choosing hardware, but boot-time is a minor and momentary aspect of overall performance. So I would think is fan start-up behavior. As long as the fan starts up properly, why obsess over momentary noise? It only occurs at startup.

 

[aigomorla]

normal fan for pwm class..

Basically the fan will ramp at full speed when you first boot the system, and then slow down as cpu load / temperature is within a set range.

The only time u need to have caution is when your temps get too high, or you never hear your fan going full speed when your doing something cpu heavy.

If you never do anything cpu heavy, well, then your probably never gonna see that fan ramp up high, unless it gets real hot temperature wise at your location.

 

[plopke]

Thx for the replies, so normal. I assume nothing of this can be controlled in BIOS , there is a CPU fan option(silent-normal-custom) but that one applies to after boot up behaviour.

No intention of buying a other one if this is normal behaviour , it is a budget upgrade of the old E8400, doubt mom/dad will find 2 second of fan ramp up annoying since it goes into silent spinning shortly after.

Regards Ward

 

[JeffMD]

Right, the silent fan features don't kick in till after POST. The only time this isn't the case is laptops, their fan is "on-demand" instead of always on.

 

[plopke]

Intel send me a new heatsink for free , so updated main post.