Fans being louder than others?

Reefer86 · Aug 17, 2009

hi guys, quick question really i have 2 fans on the top outake of my case. now they connect through molex to the power. These are the same fan (same model number etc) But my problem is one of the fans is really quiet but when i plug the other in, its like a jet taking off louder then the other 6 fans in there.
Now its proberly just that the fan has 'gone' or broken but i wondered if anyone could explain this and has it happened to anyone else?

same fan same model but one is a MASSIVE amount loader then the other 2 of the same type and model number i have in my case.

Thanks Reefer

nafets · Aug 17, 2009

What is the model # of the suspect fans?

Are they sleeve bearing fans? If so, blowing in a vertical direction is usually not good for the bearing's longevity. The quieter one could be on the way out.

You could try taking both fans out and testing them in open air (just held in your hand). To compare, try plugging them into the same molex connector or motherboard fan header. Use different MB fan headers and molex connectors. Maybe there is too much current going through the molex connector to the "louder" fan.

Just a few wild guesses...

BumbleBee · Aug 17, 2009

fans plugged directly into the power supply get more juice than ones plugged into the motherboard fan headers.

Reefer86 · Aug 17, 2009

yeah i realise they get more juice through a molex... but they both have fan controller wires connected to the board and they seem to be all ok on the wiring and i set them up in the bios to be sure about controlling them. yes they are sleave bearing.
i know about the power they get is much more on a molex but doesnt explain why one is a shit load louder then the other. I have checked using diffrent molex connectors and 'lines' as its a modular psu. All i can think is that maybe the fan controller part of the fan is dead inside ..and yes i have tried it on diffrent headers on the board, OR the fan itself it just got old and is now DAM noisy! when i say loud i mean its loader then my whole 6 system and cpu and gfx card fans put together.

AsRock · Aug 17, 2009

Reefer86 said:
yeah i realise they get more juice through a molex... but they both have fan controller wires connected to the board and they seem to be all ok on the wiring and i set them up in the bios to be sure about controlling them. yes they are sleave bearing.
i know about the power they get is much more on a molex but doesnt explain why one is a shit load louder then the other. I have checked using diffrent molex connectors and 'lines' as its a modular psu. All i can think is that maybe the fan controller part of the fan is dead inside ..and yes i have tried it on diffrent headers on the board, OR the fan itself it just got old and is now DAM noisy! when i say loud i mean its loader then my whole 6 system and cpu and gfx card fans put together.

How many RPM ?.. Is it like a screaming\rubbing sound and quietens down a little over time ?, if so one or more are wearing out.

Gzero · Aug 17, 2009

Is it starved of air? A fan up against a tight grill makes it spin faster than normal, which makes more noise. Take it off the mount and hold it in your hand.

Reefer86 · Aug 18, 2009

its just good dam loud and yes i took it off and its still loud. its a no-issue really because its going in a box now in the shed. i just wanted to know if anyone had come across this before and it did seem kinda strange for one to be really quiet and one really loud.

phanbuey · Aug 18, 2009

Reefer86 said:
its just good dam loud and yes i took it off and its still loud. its a no-issue really because its going in a box now in the shed. i just wanted to know if anyone had come across this before and it did seem kinda strange for one to be really quiet and one really loud.

I have - usually with cheaper fans there will be variation in the operating characteristics. More expensive fans tend to be more consistent.

System Name	Betty The Dirty Dragon
Processor	AMD 8350 @4.8
Motherboard	ASUS sabertooth rev 2
Cooling	Watercooling - Swiftech GTZ - XSPC RS360 - XSPC RX120
Memory	8GB corsair vengeance cas 9
Video Card(s)	280x 1100core 1600 mem
Storage	240 gb ssd- 2 tb Storage
Display(s)	Samsung 24" 2433BW
Case	Corsair 650d
Audio Device(s)	Xfi Fatality Titanium Pro
Power Supply	XFX 850 fully modular
Software	Windows 7 Ultimate x64

Processor	Intel Core i5-3570K
Motherboard	Asus P8Z77-V Pro
Cooling	Noctua NH-D14
Memory	8GB Mushkin Blackline DDR3-1600
Video Card(s)	Gigabyte GTX 670
Storage	Intel 520 60GB, Seagate Barracuda XT 2TB
Display(s)	BenQ 24" XL2420T
Case	Corsair 550D
Audio Device(s)	Sennheiser HD600, Audeze LCD-3F, Mytek Stereo 192 DSD, La Figaro 339, Burson HA-160, Geek Pulse X
Power Supply	Corsair AX650
Mouse	steelseries Sensei MLG edition
Keyboard	Cooler Master QuickFire Pro
Software	Windows 7 64-bit Home Premium

System Name	Betty The Dirty Dragon
Processor	AMD 8350 @4.8
Motherboard	ASUS sabertooth rev 2
Cooling	Watercooling - Swiftech GTZ - XSPC RS360 - XSPC RX120
Memory	8GB corsair vengeance cas 9
Video Card(s)	280x 1100core 1600 mem
Storage	240 gb ssd- 2 tb Storage
Display(s)	Samsung 24" 2433BW
Case	Corsair 650d
Audio Device(s)	Xfi Fatality Titanium Pro
Power Supply	XFX 850 fully modular
Software	Windows 7 Ultimate x64

Processor	AMD 3900X \ AMD 7700X
Motherboard	ASRock AM4 X570 Pro 4 \ ASUS X670Xe TUF
Cooling	D15
Memory	Patriot 2x16GB PVS432G320C6K \ G.Skill Flare X5 F5-6000J3238F 2x16GB
Video Card(s)	eVga GTX1060 SSC \ XFX RX 6950XT RX-695XATBD9
Storage	Sammy 860, MX500, Sabrent Rocket 4 Sammy Evo 980 \ 1xSabrent Rocket 4+, Sammy 2x990 Pro
Display(s)	Samsung 1080P \ LG 43UN700
Case	Fractal Design Pop Air 2x140mm fans from Torrent \ Fractal Design Torrent 2 SilverStone FHP141x2
Audio Device(s)	Yamaha RX-V677 \ Yamaha CX-830+Yamaha MX-630 Infinity RS4000\Paradigm P Studio 20, Blue Yeti
Power Supply	Seasonic Prime TX-750 \ Corsair RM1000X Shift
Mouse	Steelseries Sensei wireless \ Steelseries Sensei wireless
Keyboard	Logitech K120 \ Wooting Two HE
Benchmark Scores	Meh benchmarks.

Processor	AMD 3700X
Motherboard	MSI P55-GD80
Cooling	Fractal Design Celsius S24
Memory	2x16gb Crucial e-die 3000MHZ
Video Card(s)	MSI 3070 Trio
Display(s)	Lenovo G27Q-20
Case	Phantec P400
Audio Device(s)	GSP370
Power Supply	EVGA G3 750W
Mouse	Corsair Harpoon Pro
VR HMD	Rift

Fans being louder than others?

Reefer86

nafets

New Member

BumbleBee

Reefer86

AsRock

TPU addict

Gzero

Reefer86

phanbuey

Processor	13700KF Undervolted @ 5.6/ 5.5, 4.8Ghz Ring 200W PL1
Motherboard	MSI 690-I PRO
Cooling	Thermalright Peerless Assassin 120 w/ Arctic P12 Fans
Memory	48 GB DDR5 7600 MHZ CL36
Video Card(s)	RTX 4090 FE
Storage	2x 2TB WDC SN850, 1TB Samsung 960 prr
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Audio Device(s)	Yes
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