Help Slowing Down Case Fans

MK4512 · 11-07-2009, 10:46 PM

So I got a 2 cooler master LED fans for my case, and installed them. Unfortunately they run quite loud, is there anyway I can lower their speed?

Also, they are connected directly to the power supply, not the mobo.

Motherboard AOD790GX

Thanks

Meow9000 · 11-07-2009, 10:51 PM

You can buy some pre-made resistor to drop it from 12v to 5v that plug in between the psu and fan but i dont see them often over here in the uk. You could always drop round your local hardware/electronics strore and make some yourself if you have the tools and knowledge.

theonedub · 11-07-2009, 10:52 PM

Do the old fashion mod by swapping the wires in the molex plug. Here is a thread with pictures. I prefer the 5v, as there is no issues like the 7v mod may have. The fans slow down a lot though= low cfm.

thread here http://www.ocforums.com/showthread.php?t=372297

kenkickr · 11-07-2009, 10:54 PM

Quote:

Originally Posted by theonedub

Do the old fashion mod by swapping the wires in the molex plug. Here is a thread with pictures. I prefer the 5v, as there is no issues like the 7v mod may have. The fans slow down a lot though= low cfm.

thread here http://www.ocforums.com/showthread.php?t=372297

+1. That is the cheapest way but just as effective. Also doesn't require much work.

TheLaughingMan · 11-07-2009, 10:58 PM

If they are connected directly to the PSU, no. The third wire on the fan plugs for the mobo is the fan voltrage control line. If your fan has power from the PSU and a separate line (just that yellow third wire) you can connect it to the mobo and use a software fan control.

And my late post stands corrected.

choppy · 11-07-2009, 11:12 PM

google '7v fan mod' - straightforward mod, even I managed to do it lol

MK4512 · 11-08-2009, 04:59 PM

Thanks alot guys, performed the mod worked fine.

11-07-2009, 10:46 PM	#1
MK4512 Join Date: Aug 2009 Posts: 76 (0.88/day) Thanks: 23 Thanked 6 Times in 5 Posts System Specs	Help Slowing Down Case Fans So I got a 2 cooler master LED fans for my case, and installed them. Unfortunately they run quite loud, is there anyway I can lower their speed? Also, they are connected directly to the power supply, not the mobo. Motherboard AOD790GX Thanks __________________

System Name:	MK4512's Computer
Processor:	Phenom II X3 720 @3.4GHz
Motherboard:	ASRock AOD790GX
Cooling:	Artic Cooling Freezer 64 Pro
Memory:	4 GB GSkill DDR2 800 RAM @4-4-4-12
Video Card:	Sapphire Radeon 4890
Harddisk:	500GB Seagate
CRT/LCD Model:	22" Philips 1920x1080
Case:	Antec 300 (w/ New LED Fans!)
PSU:	600w OCZ XStream Modular PSU
Software:	Windows 7

Processor:	AMD PHENOM 9950BE x4 (140W)
Motherboard:	ASUS CROSSHAIR II (BIOS 2003)
Cooling:	ZALMAN 9700L
Memory:	4GB CORSAIR DOMINATOR 1066 (2x2GB)
Video Card:	XFX 9600GT XXX (740/1000)
Harddisk:	WD250x2 RAID0/Maxtor 500GB STORAGE
CRT/LCD Model:	SAMSUNG 23"/ACER 20"
Case:	COOLMASTER 690 CUSTOM
Sound Card:	SUPREME FX II
PSU:	OCZ 700W
Software:	WINDOWS 7 RC7100/VISTA 64

11-07-2009, 10:52 PM	#3
theonedub Join Date: Apr 2009 Location: Northern CA Posts: 858 (4.20/day) Thanks: 205 Thanked 224 Times in 168 Posts System Specs	Do the old fashion mod by swapping the wires in the molex plug. Here is a thread with pictures. I prefer the 5v, as there is no issues like the 7v mod may have. The fans slow down a lot though= low cfm. thread here http://www.ocforums.com/showthread.php?t=372297 __________________ Intel Q9550 & Phenom 9650 Crunching + GTX 275 & 9600 GSO Folding 24/7 FS- Core 2 Duo e7400, PS3 & XBOX 360 Games, and 24 DVD Box sets! MY HEAT

System Name:	(Daily)WCG0 / WCG1
Processor:	Q9550 / Phenom 9650
Motherboard:	EVGA 780i FTW / Asrock A780
Cooling:	Xig Dark Knight + ISGC 12 Fan / Thermaltake ISGC 300
Memory:	2x2gb Gskill DDR2 800 / 2x1gb Gskill DDR2 800
Video Card:	BFG GTX 275 OC / 9600GSO
Harddisk:	1.5TB (2 drives) / 250GB
CRT/LCD Model:	Samsung 23" 2048x1152 / Vizio 47" 1080P LCD
Case:	Azza Fantom 900 / CoolerMaster Mystique 632S
PSU:	Antec TruePower New Blue 750w / Rosewill 600w
Software:	Windows 7 Pro x64
Benchmarks:	WCG & F@H

11-07-2009, 10:51 PM	#2
Meow9000 Join Date: Jul 2009 Location: Wales, Uk Posts: 123 (1.00/day) Thanks: 1 Thanked 21 Times in 20 Posts System Specs	You can buy some pre-made resistor to drop it from 12v to 5v that plug in between the psu and fan but i dont see them often over here in the uk. You could always drop round your local hardware/electronics strore and make some yourself if you have the tools and knowledge.

System Name:	Wrigley
Processor:	PII X4 965 lapped @ 3.9Ghz 1.425v HTT @2.6Ghz(4Ghz @ load not stable yet)
Motherboard:	Asus Crosshair III Formula AM3 w/ 0903 bios
Cooling:	Swiftech GTZ, Swiftech D5 pump, 2xDual 120 rads, and MCW60 GPU block
Memory:	4Gb kit Crucial DDR3-1333 @ 1600 8-8-8-20-40 w/ Xigmatek Dragoon N422 ramsinks
Video Card:	Diamond 4890 XoC @ 1Ghz GPU/1Ghz Memory
Harddisk:	2x WD 250Gb's in RAID 0(OS) and 1TB Green Edition(Storage) in external
CD/DVD Drive:	Pioneer SATA DVD burner
CRT/LCD Model:	Acer 22" LCD P221W
Case:	Cooler Master 690
Sound Card:	SupremeFX X-fi MB
PSU:	Corsair 750W TX w/ sleeving mod
Software:	Windows 7 Ultimate x64 Signature Ed

11-07-2009, 10:58 PM	#5
TheLaughingMan Join Date: May 2009 Location: Mississippi, USA Posts: 982 (4.97/day) Thanks: 213 Thanked 158 Times in 140 Posts System Specs	If they are connected directly to the PSU, no. The third wire on the fan plugs for the mobo is the fan voltrage control line. If your fan has power from the PSU and a separate line (just that yellow third wire) you can connect it to the mobo and use a software fan control. And my late post stands corrected.

System Name:	The Quadfather /*/ Mighty Mouse
Processor:	AMD Phenom II X4 955 @ 3.5 Ghz /*/ 5200+ @ 3.0 Ghz
Motherboard:	MSi 790GX-G65 /*/ GIGABYTE MA785GM-US2H
Cooling:	Scythe Mugen II /*/ CM RR-CCH-P912-GP 92mm
Memory:	G.Skill 4GB DDR3 1333Mhz 7-7-7-20 /*/ OCZ 4GB DDR2 1066 Mhz 5-4-4-12
Video Card:	XFX GeForce 260 Black Edition (666/1440/2300 C/S/M) /*/ HD 4200 IGP
Harddisk:	1x WD 640 Gb 16MB cache Black / 1x Sammy 1 Tb F2 /*/ 1x Sammy F3 1TB Black
CD/DVD Drive:	NEC 22x DVD Burner /*/ LITE-ON DVD Writer SATA w/ LightScribe
CRT/LCD Model:	Acer X233H 23" Widescreen 5ms LCD Monitor /*/ LG 19" Flatronic LCD 8ms
Case:	Ultra Aluminus Black /*/ SILVERSTONE SUGO SG02 Black
Sound Card:	Intergrated Realtek 889A /*/ Intergrated Realtek 8111C
PSU:	Rosewill 600W Sallion Series /*/ Rosewill 430W v2 Green Series
Software:	Windows 7 RC1 64-bit
Benchmarks:	I don't benchmark.

11-07-2009, 11:12 PM	#6
choppy Join Date: Jul 2007 Location: Lancashire, UK Posts: 926 (1.08/day) Thanks: 56 Thanked 119 Times in 108 Posts System Specs	google '7v fan mod' - straightforward mod, even I managed to do it lol __________________ "An online argument is like the special olympics...when you win you're still a retard"

Processor:	Intel E7200 [M0] 2.53GHz @ 3.40GHz (400x8.5) [stock volts]
Motherboard:	Gigabyte GA-P35-DS3L Rev 1.0
Cooling:	CPU: AC Freezer 7 Pro / Case: 120mm (front-in), 80mm (side-out) / GFX: Accelero S1-r2
Memory:	2 x Kingston Hyper-X 2GB PC2-6400 running 1:1 @ 400MHz (800MHz) 4-4-4-12 2T [2.0v]
Video Card:	Powercolor HD4870 GDDR5 @ 700/900MHz
Harddisk:	Samsung HD161HJ 160GB HDD
CD/DVD Drive:	Samsung SH-S203D/BEBN DVD-RW
CRT/LCD Model:	Hanns-G HX191D 19" LCD @ 1280*1024 (75Hz)
Case:	Casecom Black Mid Tower Case - With Side Window
Sound Card:	Soundblaster Live! 24-bit w/ Creative Inspire T6060 5.1 200W
PSU:	Corsair VX450W
Software:	Windows XP Home Edition SP3
Benchmarks:	3dmark '06 = 14165 (default settings) \| Super PI mod1.5 XS 1M = 12.594 @ 4.2Ghz

11-08-2009, 04:59 PM	#7
MK4512 Join Date: Aug 2009 Posts: 76 (0.88/day) Thanks: 23 Thanked 6 Times in 5 Posts System Specs	Thanks alot guys, performed the mod worked fine. __________________

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