Question about Papst 4412FGL fan

ZenTrickz · Post by **ZenTrickz** » Sat Dec 11, 2004 10:54 pm

I'm looking into making my computer as quiet as possible, but allow it to do a reasonable overclock. I'm trying to decide on fans for a dual-120mm radiator (which I havn't decided on either). I read the sticky of the summary of 120 mm fans and was curious how others think of the Papst 4412FGL fan for radiators? I've read here that that it is near to silent when undervolted to 5v, but I'm not sure at 5v it will move enough air for me. How is the noise level running at it's normal volts? At normal volts does it move enough air to cool a radiator?

Thanks a bunch guys.

Incase you're wondering, the water cooling setup will be cooling:
-AMD 64 3200+ (OC at 2.6ghz)
-GeForce 6800GT OCed as well

Edit: Maybe I should list the radiator I had in mind too.
Black Ice Pro II Dual 120mm Radiator
http://www.sidewindercomputers.com/blackiceproii.html

JavaLava · Post by **JavaLava** » Sat Dec 11, 2004 11:19 pm

At full voltage the Papst is definitely audible within a 3 meter range, mostly airflow noise. The 4412F2/GL (with tacho) spinning at 900rpm is VERY quiet, almost inaudible in a case. In my book it is THE best 120mm fan available. I haven't tried it on a radiator, but I would think at 7v the Papst would move enough air for your radiator and still be incredibly quiet. Bringing it up to 9v would increase the air turbulance noise, but it is very smooth in character.

silencery · Post by **silencery** » Sat Dec 11, 2004 11:25 pm

I'd recommend the nexus 120 for noise, not sure if it moves enough air for you though. Out of the fans I've tried, Nexus has the best noise/CFM ratio out of papst, nexus, globe and adda.

Check the 120mm sticky in the forums for more details.

lm · Post by lm » Sun Dec 12, 2004 1:31 am

I own the papst 4412f/2gl, ie. the asked model with rpm monitoring.

Out of seagate 7200.7 80GB sata, sonata's psu, zalman 7000a-alcu at fanmate minimum speed, the papst running at fanmate min speed is by far the most quiet component. And i don't have any clicking noise whatsoever. It still seems to push a fair amount of air, and would think that 2 of those would cool a radiator.

Qwertyiopisme · Post by **Qwertyiopisme** » Sun Dec 12, 2004 1:33 am

In my system I have 1 FF42FGL running at *permanent* 5V through a 150x190mm haetercore. Images:

http://img.photobucket.com/albums/v324/ ... mplete.jpg
http://img.photobucket.com/albums/v324/ ... py/box.jpg
http://img.photobucket.com/albums/v324/ ... bottom.jpg

My WCing loop is fairly restrictive bringing the flow of my Eheim 1048 to roughyl half of its free-flow flow rate.

I have a 2500+ OCed and Overvolted to 1.75V, and it stays at roughly 43-47* at 15-20* ambient.

The heatercore is not even warm to the touch.

ZenTrickz · Post by **ZenTrickz** » Sun Dec 12, 2004 1:58 am

Good stuff! You guys are feeding me invaluable info. I've concluded I'm going to go with two Papst 4412F/2GL. I hear you guys talking about RPM monitoring, and it sounds like it will come in handy. Do I need to buy two 4412F/2GL's or one of those, and a 4412FGL to be able to monitor both? Not exactly sure if RPM monitoring is something external to them, or a device that needs to be equiped to both. Could you fill me in on the details.

Takie · Post by **Takie** » Sun Dec 12, 2004 2:57 am

Im are u sure it's possible to have the Papst 4412F/2GL spinning@ 5 volt? I thaught most 120mm fans would stop spinning at around 850-900 rpm and at 5 volt the papst would do +/- 650 rpm if i'm correct.

And is the tachometer ment to read out the rpm of the fan in bios?

Qwertyiopisme · Post by **Qwertyiopisme** » Sun Dec 12, 2004 3:01 am

Takie wrote:Im are u sure it's possible to have the Papst 4412F/2GL spinning@ 5 volt? I thaught most 120mm fans would stop spinning at around 850-900 rpm and at 5 volt the papst would do +/- 650 rpm if i'm correct.

Both of mine (one hardwired at 5V, the other at 5V-ish with a homemade resistor) have always started (well once one refused to start, but that was becasue the wire fell out

).

They dont blow much air no, but enough for me...

chylld · Post by **chylld** » Sun Dec 12, 2004 4:41 am

i run a similar setup to Qwertyiopisme, i have 2 papst 4412fgl fans @7v pulling air through a very thick heatercore (about twice the thickness of the bip2/dual you refer to, Zentrickz, with increased fin density to boot) with no problems at all. cpu temperature with the fans at 5v is only 2-3 degrees higher than with the fans at 12v.

they really are excellent fans, i highly recommend them. they'll have no trouble starting up at 5v, nor cooling a thick and dense radiator.

Qwertyiopisme · Post by **Qwertyiopisme** » Sun Dec 12, 2004 5:27 am

Ah yes, I would jsut like to clarify that I have one fan at 5V sucking through my heatercore adn the other fan is inside my main case blowing over my harddisks, so IOW I have only *1* fan at 5V pulling air through my heatercore.