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 Post subject: Need to identify quieter CPU fan model for this "fanless" PC
PostPosted: Thu Dec 07, 2017 9:14 pm 
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Hi,

I recently (probably foolishly) purchased a "fanless" small form factor PC for firewall duties. Of course it comes with a noisy 50mm (?) fan. Images are here:

https://imgur.com/a/14l1x

I believe this is a mini-ITX mobo with an Intel nm70 (?) chipset and a Haswell era i5 4200U processor. Can anyone tell me what kind of fan I should be searching for to replace the current noisy one in this thing? Is this a "blower" fan?

Thanks in advance,

Stu


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 Post subject: Re: Need to identify quieter CPU fan model for this "fanless
PostPosted: Fri Dec 08, 2017 11:10 am 
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Hello Stu & welcome to SPCR,

Yes, that is a blower type fan. It pulls air in through those three slots on the side, and blows it out through the opening on the edge of the case. Can you post a picture of the system, so we can see how the fan is used?

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http://neilblanchard.blogspot.com/


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 Post subject: Re: Need to identify quieter CPU fan model for this "fanless
PostPosted: Fri Dec 08, 2017 3:36 pm 
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NeilBlanchard wrote:
Hello Stu & welcome to SPCR,

Yes, that is a blower type fan. It pulls air in through those three slots on the side, and blows it out through the opening on the edge of the case. Can you post a picture of the system, so we can see how the fan is used?


Thanks Neil,

Images showing the case, the mobo in the case and the heatsink/fan shroud partly reassembled are at:

https://imgur.com/a/k3BJl

Thanks,

Stu


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 Post subject: Re: Need to identify quieter CPU fan model for this "fanless
PostPosted: Sun Dec 10, 2017 1:35 pm 
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Location: Maynard, MA, Eaarth
That won't be easy to find a replacement for - let alone know whether it is quieter, or not. Are there restrictions on the air flow - and if there is a grill on the exhaust air, could it be opened up? Does the fan vary it's RPM with temperature?

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http://neilblanchard.blogspot.com/


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 Post subject: Re: Need to identify quieter CPU fan model for this "fanless
PostPosted: Mon Dec 11, 2017 1:33 am 
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Location: Sweden
As far as I can see the black mesh on the inside of the vents could be removed (by well applied force) to ease the ventilation.


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 Post subject: Re: Need to identify quieter CPU fan model for this "fanless
PostPosted: Thu Dec 14, 2017 2:42 pm 
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NeilBlanchard wrote:
That won't be easy to find a replacement for - let alone know whether it is quieter, or not. Are there restrictions on the air flow - and if there is a grill on the exhaust air, could it be opened up? Does the fan vary it's RPM with temperature?


Thanks Neil -- I'll definitely open up whatever grills I can but I think I might be putting this one down to experience on buying from Aliexpress without getting some kind of written confirmation about what "fanless" means.

Stu


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 Post subject: Re: Need to identify quieter CPU fan model for this "fanless
PostPosted: Thu Dec 14, 2017 2:42 pm 
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Olle P wrote:
As far as I can see the black mesh on the inside of the vents could be removed (by well applied force) to ease the ventilation.


Good point -- thanks.

Stu


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