230mm case fan RPM

lwgnlseven · May 18, 2012, 10:40 PM

Hey guys I just put together my HAF 932. It comes with 3 - 230mm fans (2 intake and 1 exhaust) and 1 - 140 mm exhaust fan. The 230mm is suppose to run at 700 rpm. The front intake is 725 rpm, the top exhaust is 730 rpm and the side panel 230mm is 480 rpm. I have this fan directly to the motherboard, I've also ran a molex connector to the PSU and still remains at 480 rpm. Defective fan? Should I worry at all about this or just leave it be? At 700 rpm they push 110 cfm, would the side panel blowing on the GPU / CPU be sufficient at 480 rpm? Thanks for your help.

OnePostWonder · May 18, 2012, 11:14 PM

If you look at the fans, they should have a sticker on them with a model number. With that, you can look up the specifications.

I have a 230mm fan that runs at 800 RPM +/- 20%.

lwgnlseven · May 19, 2012, 12:04 AM

Did some poking around and put the side fan into another fan slot, ran at proper 770ish rpm. Must be defective fan port on the motherboard. Routed a molex to PSU and although i can't monitor the speeds through the PSU, I'd say it looks to be running faster and distributing more air. Thanks for the reply.

PS. do you know how to monitor the rpm of a fan through the PSU? I'd like to be able to confirm its running properly but i dont know how to when its not on the motherboard...

Maban · May 19, 2012, 06:57 AM

Pull out the tach lead (yellow wire) and pop it into another connector. Plug that into the motherboard.

lwgnlseven · May 19, 2012, 01:02 PM

Well here's the thing. I took the side panel fan that was running at 480 rpm. It was plugged into PWR_FAN 2 slot, I unplugged it and put it into PWR_FAN 1 and it registered at 770 rpm. So I'm lead to believe that the fan is perfectly fine, but PWR_FAN 2 might be a little defective. Not a huge deal, I router a molex connector and put the side panel fan into that. I would like to confirm that this fan (now plugged into the PSU) is properly running again at that 770 rpm.

Does the fan run at max RPM when plugged directly into the PSU? Should I just assume that it is indeed running at 770 rpm? Thanks.

Maban · May 19, 2012, 01:16 PM

Yes, just assume it's running as it should. A fan plugged into the PSU directly will run at full speed.

What motherboard do you have? I've never seen a motherboard with two PWR_FAN headers. I'm betting that PWR_FAN2 is actually a chassis fan header (mislabeled on the board or the manual) and you have it set lower than 100% in the BIOS.

brandonwh64 · May 19, 2012, 01:28 PM

ITs because that header is set to a specific speed. Your best option here is to order some fan header to molex adapters and run them straight from the PSU to get max RPM.

lwgnlseven · May 19, 2012, 10:44 PM

I have an ASUS P8Z68-V PRO/GEN3. And you are correct, I have PWR_FAN 1 which works fine, but the one that isn't running full speed is CHA_FAN 2. And I have routed a molex connector to the PSU so the fan should be running at full speed. It sure looks a bit faster and I can feel more air being pushed off of it. Thanks for all the help guys, problem looks solved

OnePostWonder · May 20, 2012, 06:06 PM

Quote:

Originally Posted by lwgnlseven

I have an ASUS P8Z68-V PRO/GEN3. And you are correct, I have PWR_FAN 1 which works fine, but the one that isn't running full speed is CHA_FAN 2. And I have routed a molex connector to the PSU so the fan should be running at full speed. It sure looks a bit faster and I can feel more air being pushed off of it. Thanks for all the help guys, problem looks solved

I have the same motherboard, so thanks for the info.

May 18, 2012, 10:40 PM	#1
lwgnlseven Join Date: May 2012 Posts: 96 (0.25/day) Thanks: 17 Thanked 8 Times in 7 Posts	230mm case fan RPM Hey guys I just put together my HAF 932. It comes with 3 - 230mm fans (2 intake and 1 exhaust) and 1 - 140 mm exhaust fan. The 230mm is suppose to run at 700 rpm. The front intake is 725 rpm, the top exhaust is 730 rpm and the side panel 230mm is 480 rpm. I have this fan directly to the motherboard, I've also ran a molex connector to the PSU and still remains at 480 rpm. Defective fan? Should I worry at all about this or just leave it be? At 700 rpm they push 110 cfm, would the side panel blowing on the GPU / CPU be sufficient at 480 rpm? Thanks for your help.

System Name:	New / Breakin' the Lol
Processor:	i5 2500k / Athlon64 X2 4200+ (65W)
Motherboard:	P8Z68-V PRO/GEN3 / Asus M2N4-SLI
Cooling:	/ Air (1 x 250mm, 2 x 120mm, 1 x 90mm)
Memory:	DDR3-1600 (8GB) / Crucial Ballistix Tracer PC2-6400 (2gb)
Video Card:	/ Visiontek 4870
Hard Disk:	HD103SJ /
CRT/LCD Model:	Viewsonic 22" VX2240W
Case:	Xigmatek Midgard II / Thermaltake VA8003SWA
PSU:	PC Power & Cooling Silencer 750W

System Name:	I Dub Thee Infinity
Processor:	Intel Core i3-2120
Motherboard:	ASUS P8P67 WS Revolution
Cooling:	Corsair H80
Memory:	2x4GB 2400 Trident X
Video Card:	EVGA GTX 680
Hard Disk:	OCZ V2 180GB, 4x HD502HJ, HD204UI, 3TB 7200.14, 250GB 5400.5, 250GB 5400.6
Optical Drive:	TSST SH-S203N
CRT/LCD Model:	Acer P243W
Case:	Cooler Master HAF X
Sound Card:	Creative X-Fi Titanium + Logitech Z506 + Turtle Beach HPA2
PSU:	Silverstone ST1000-P
Software:	Windows 7 Pro x64

System Name:	I Dub Thee Infinity
Processor:	Intel Core i3-2120
Motherboard:	ASUS P8P67 WS Revolution
Cooling:	Corsair H80
Memory:	2x4GB 2400 Trident X
Video Card:	EVGA GTX 680
Hard Disk:	OCZ V2 180GB, 4x HD502HJ, HD204UI, 3TB 7200.14, 250GB 5400.5, 250GB 5400.6
Optical Drive:	TSST SH-S203N
CRT/LCD Model:	Acer P243W
Case:	Cooler Master HAF X
Sound Card:	Creative X-Fi Titanium + Logitech Z506 + Turtle Beach HPA2
PSU:	Silverstone ST1000-P
Software:	Windows 7 Pro x64

May 19, 2012, 01:28 PM	#7
brandonwh64 Addicted to Bacon and StarCrunches!!! Join Date: Sep 2009 Location: Chatsworth, GA Posts: 13,560 (10.04/day) Thanks: 2,138 Thanked 5,338 Times in 3,695 Posts System Specs	ITs because that header is set to a specific speed. Your best option here is to order some fan header to molex adapters and run them straight from the PSU to get max RPM. __________________ Cruncher's: All GPU's GPU's: 7970 3GB Unlocked = 8 Threads 5770 1GB OCed = 2 Threads

May 18, 2012, 11:14 PM	#2
OnePostWonder Join Date: Dec 2008 Posts: 485 (0.30/day) Thanks: 61 Thanked 89 Times in 70 Posts System Specs	If you look at the fans, they should have a sticker on them with a model number. With that, you can look up the specifications. I have a 230mm fan that runs at 800 RPM +/- 20%.

May 19, 2012, 12:04 AM	#3
lwgnlseven Join Date: May 2012 Posts: 96 (0.25/day) Thanks: 17 Thanked 8 Times in 7 Posts	Did some poking around and put the side fan into another fan slot, ran at proper 770ish rpm. Must be defective fan port on the motherboard. Routed a molex to PSU and although i can't monitor the speeds through the PSU, I'd say it looks to be running faster and distributing more air. Thanks for the reply. PS. do you know how to monitor the rpm of a fan through the PSU? I'd like to be able to confirm its running properly but i dont know how to when its not on the motherboard...

May 19, 2012, 06:57 AM	#4
Maban Join Date: Mar 2008 Location: Minnesota Posts: 1,911 (1.01/day) Thanks: 797 Thanked 549 Times in 358 Posts System Specs	Pull out the tach lead (yellow wire) and pop it into another connector. Plug that into the motherboard.

May 19, 2012, 01:02 PM	#5
lwgnlseven Join Date: May 2012 Posts: 96 (0.25/day) Thanks: 17 Thanked 8 Times in 7 Posts	Well here's the thing. I took the side panel fan that was running at 480 rpm. It was plugged into PWR_FAN 2 slot, I unplugged it and put it into PWR_FAN 1 and it registered at 770 rpm. So I'm lead to believe that the fan is perfectly fine, but PWR_FAN 2 might be a little defective. Not a huge deal, I router a molex connector and put the side panel fan into that. I would like to confirm that this fan (now plugged into the PSU) is properly running again at that 770 rpm. Does the fan run at max RPM when plugged directly into the PSU? Should I just assume that it is indeed running at 770 rpm? Thanks.

May 19, 2012, 01:16 PM	#6
Maban Join Date: Mar 2008 Location: Minnesota Posts: 1,911 (1.01/day) Thanks: 797 Thanked 549 Times in 358 Posts System Specs	Yes, just assume it's running as it should. A fan plugged into the PSU directly will run at full speed. What motherboard do you have? I've never seen a motherboard with two PWR_FAN headers. I'm betting that PWR_FAN2 is actually a chassis fan header (mislabeled on the board or the manual) and you have it set lower than 100% in the BIOS.

System Name:	The StarCrunch Defender!
Processor:	I7 2600K @ 4.5ghz 1.32V
Motherboard:	Gigabyte Z68X-UD3H-B3
Cooling:	Corsair A70 Push/Pull
Memory:	G-Skill Ripjaws 2x4GB DDR3 1866mhz
Video Card:	Gigabyte 7970 3GB Reference Card at boost clocks
Hard Disk:	2x 500GB WD Blue Raid 0 / 1TB WD Black
Optical Drive:	Samsung DVD/R/RW SATA
CRT/LCD Model:	ViewSonic VG2227wm 1080P
Case:	NZXT Tempest 410 Elite
Sound Card:	Onboard Realtek (Azalia)
PSU:	Corsair 750TX
Software:	Windows 7 Home X64

May 19, 2012, 10:44 PM	#8
lwgnlseven Join Date: May 2012 Posts: 96 (0.25/day) Thanks: 17 Thanked 8 Times in 7 Posts	I have an ASUS P8Z68-V PRO/GEN3. And you are correct, I have PWR_FAN 1 which works fine, but the one that isn't running full speed is CHA_FAN 2. And I have routed a molex connector to the PSU so the fan should be running at full speed. It sure looks a bit faster and I can feel more air being pushed off of it. Thanks for all the help guys, problem looks solved

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