Case fan ?

Can someone tell me please the right way a side 80 case fan should be,
? Should i put it so it's sucking hot air out of the case or should i have it blowing air into the pc case
Thanks for any info on this

Quote from: And@MSI on 08-December-06, 12:03:55
Think i need a better cpu fan mate as this zalman i have on me cpu heatsink isent up to much, im ideling at 47c now as i have my heating on in my flat.
Going to have a look around and see if i can get one of them XB PRO Blower fans mate, they spin at 4000 rpm and look to me as thay push the air into the heatsink fins wich should work better i hope.
Can but try, Cheers mate.
The rule of thumb is that fans on the front should pull air into the case, fans in the back should exhaust the air from the case. Using that rule, the side fans should pull the air into the case since only the rear fans should exhaust the air.
What Zalman are you referring to? I didn't see it in your posts. They have some great fan/heatsink units, but perhaps you are not using one of their good models?

Similar Messages

How do I fix my case fans??

I have two 80 mm case fans (12v). I was wondering what the allignment of the fans should be. Should These fans blow air INTO the case or should they SUCK OUT the air from the case. I currently use a 350 Watt CODEGEN PSU with a single fan which sucks air INTO the PSU and hence INTO the case. Problem with sucking air into the case is that a lot of dust gets into the cabinet. On the other hand, sucking air out of the case leaves lesser air for the CPU and NB fans to effictively cool the CPU and NB. Any sugestions??
I plan to overclock, but not right now. The temperatures at no load are as follows:
With Side Pannels Fixed - CPU=51 Degrees Cel System=44 Degrees Cel
Without Side Pannels (Open Case) - CPU=43 Degrees Cel System=41 Degrees Cel
Is my comp overheating?
Current Rig Config:
P IV 2.8c with HTT Enabled
MSI 875P Neo-FISR Motherboard (BIOS ver 3.2)
512Mb x 2 Kingmax (MPXC22D-383) PC-3200 CL2.5184 pin DDR DIMMs Running in DUAL CHANNEL
ATI 9500 Pro 128 Mb DDR (AGP 8x / Fast Writes Enabled)
Sound Blaster Audigy Platinum
Pioneer 16x DVD ROM / Sony 52x CD-RW
80 Gb Seagate HDD 7200 RPM
Codegen 350Watt SMPS

As mentioned in the other of your thread, you PSU is weak currently, so maybe when you get another PSU, it should be intaking air to the PSU and exhuast out from the rear.
Just always remember the rule of "Hot air rises and cool air falls" and you'll most probably know where the fans are to be placed. Next, you should always try to keep the same number of intake fans and exhaust fans to keep a good capacity of airflow within the chassis.

K9a2 plat. v2. unable to change speed on my case fan

Hi!
I just bough a 80mm case fan and I can't change it's speed using the BIOS or from within the OS using speedfan.
The fan in question is a Zalman ZM-F1 with a 3 pin connector.
The motherboard can detect the fan speed. (3000rpm, so it's registering it correctly) but I have so far been unable to change it's speed. I can't figure out why, since i have a 120mm no-name fan which it detects changes speed just fine.
The 120mm is connected to sysfan 1 (works)
The 80mm zm-f1 is connected to sysfan2 (doesn't work)
I know that I can use a connector to the psu to perma-run the fan in silent mode, but the thing is that i want to be able to control the fan from BIOS (and OS). I can't figure out why i cant control the speed since the bios is able to detect it Could this be a BIOS issue?
I've been trying to find something about this issue for myself but this is all i've managed to come up with so far :
In this link it's mentioned that some motherboards can't monitor the fan speeds. I'm however able to see the fan speed.. so why can't it be changed? hmm..
http://www.quietpcusa.com/Zalman-80mm-Quiet-Computer-Fan-with-3-Pin-Connector-ZM-F1-P73C6.aspx
I hope that some of you might be able to shed some light over the situation. I'm at a loss here.
Best wishes
/Cawanga
K9A2 PLATINUM V2
BIOS ver. 1.5
AMD Phenom 9750 2640MHZ@220 FSB
Corsair 2x2048-6400
ATI 3850 CF
Corsair 740w PSU
Maxtor 6L300S0 300GB, Western Digital WD2000JD 200 GB, Samsung HD103UJ 1TB
Lite-On LTR-48246S CDRW, NEC ND-3500AG DVDRW
Win XP Pro 32-bit SP3

As you can see in BIOS (H/W Monitor) the only Fan Header that allows fan regulation is SYSFan1. I am afraid there is not much you can do besides:
Quote
I know that I can use a connector to the psu to perma-run the fan in silent mode,

Case fans control?

hi,
Is it possible to control case fans (by changing pwm) under linux?
e.g. I have Zyxel 310 Nas and i can change fan speed by put number between 0-255 to specific file, like
echo 180 > /sys/class/i2c-adapter/i2c-0/0-002e/pwm1
I want to write a bash script to control fans in dependence on actual temperature. e.g. Turn on a side fan when temperature on graphics card goes over 60*C. Or turn off all case fans when my PC is on idle - just powered on.
So i will be very happy if i can do some similar as at my zyxel. My mobo is Asrock Extreme4 970.

See https://wiki.archlinux.org/index.php/Fan_speed_control

Where can I get a replacement case fan for a HP Pavillion 180t

The case fan on my 5 year old HP Pavillion 180t has begun to make noise when running. This is the fan mounted to the back of the case, drawing air over the CPU cooling stack. From what I can gather from the HP support site, this model is no longer supported. I need to know the specifics for the fan in order to find a replacement. I would hate to have to purchase another PC because a $20.00 fan was failing. Thanks

The rear mounted fan is commonly called the System Fan. As a reference, it's model number and pic can be found here. The fan is a 3 wire 92mm x 92mm x25mm case can. Amazon price is lower.

Dual case fans and cd line in

I have a 648Max-L and would like to hook up two case fans (my AMS CF-2029 clear case has two fan brackets in rear and one 80/120mm in front).
In reading the manual and examining the board there is only one pin header for the case fan (sysfa)... so how do I hook up two fans?
second question... I have two CD's and my mobo only has one CD LineIn jumper... how do I get sound out of both CD's with only one CD LineIn pin header.
Thanks

most modern boards do not any more need the line in the ide lead does it all
most pc shops will sell you a little adaptor to connect to a psu output

Volcano 7 (original) and smart case fan

ive ordered a smart case fan (not scfII), and was wondering if id be able to put it on my volcano 7? and if i did would it be betta then what comes on it originally?
any thoughts would be appreaciated.

I think that the Volcano7 fan would do.
Volcano 7
46CFM @ 2900RPM, 53CFM @ 5000RPM
Smart fan
46 CFM at 2900rpm 53 CFM at 5000rpm
Dont see anyy difference at all.
Correct me if I am worng

I replaced the case fan on my XPS 8700 and things are much quieter.

I added a new case fan to one of our 8700s.
http://www.amazon.com/gp/product/B006ISKYPE
Pro's - it is quiet
Con's - the color scheme is ugly, but I'm the only one that looks inside my case so it doesn't bother me.
The system is noticeably quieter as this rear case fan is much quieter than the OEM case fan.
With an updated PSU and graphics card, the only sound after boot is is the CPU fan, and the occasional clunk from the HDD.
The aftermarket PSU (Seasonic x-650) fan doesn't spin until it gets hot -- which is never so it is silent.
The graphics card fans (MSI GTX 760 TF) are very quiet.
Now, on to a quieter CPU cooler if that is possible with the Dell MoBo.

You can also go here: http://www-307.ibm.com/pc/support/site.wss/product.do?template=/onlineassistant/submitAQuestion.vm&s... and submit a service request and just complain through that route. Use the link NOT to service your lappy but to complain and make them do more work to contact you and send out a box and ship them back nothing, LOL - waste their shipping money.
Oh hey, maybe this is where you send the pile of dog poo.
Message Edited by lancelot916 on 08-28-2008 08:39 PM

Sawtooth Quieting Project: Fan Replacement - Specs on 120 mm case fan?

So I thought I'd look into potentially cutting down the noise from my Sawtooth by replacing the 120 mm case fan. So, I have three (hopefully short) questions on my mind about this:
a) What are the specs on the original 120 mm case fan? All I can see is that it's manufactured by NMB.
b) Would I have to do anything special to get a replacement fan to work? (i.e. getting around non-standard power connectors, etc.)
c) If anyone's tried this before, are there any recommended fans out there I should look into?
Thanks in advance.

That's something I ran into, too. You see recommendations for certain types of really good fans but you cant find them in local stores.
This is what I did to quiet down my noisy Mac(after this thing was running for about half an hour it was just intolerable to be in the same room with).
I replaced the fan in the power supply.This is about the most difficult thing to do but the noise reduction was immense.This is a 80x80x25 mm fan and I put in a Thermaltake I bought at a PC shop.CFM (37)is lower than what was in there but the air coming out is barely warm.
I replaced the case fan with a Coolermaster ( forget the model)that is much quieter too.Look for a 120 mm fan, take the old one with you to check the size/thickness.
Then I hooked the case fan and the CPU fan ( this is a Quicksilver) up to something to regulate the voltage.I'm using a Radio Shack/ The Source power adaptor that can output either 12v,9V,7.5V, etc with a little switch on the unit.
I also opened up one of the PCI slot cover to let a little more air in.
Instead of running the fans at their rated 12v,I use the adaptor to run them at 9v.The noise reduction is dramatic, the unit does not get hot inside ( when I was testing, I opened it up and touched the heatsink every half hour or so, not hot at all).And you can always flip it back to 12V to run the fans at full speed anytime you want.
This is works great for me, it might not work for everyone if you're not comfortable with working inside power supplies ( potentially dangerous, do some reading on this first)or messing with Apple's precious fans.But I'm talking a 2/3rds noise reduction here with less than $50 worth of parts!
I didnt replace the CPU fan ( yet) because the replacement I bought was actually noisier than the stock one.Smaller fans tend to produce the most annoying noise, the larger the fan ,less irritating the sound.Find a local PC store that sells parts and has a decent return policy.Anything 12V will work in a Mac regardless of which sizes you buy.
Decent fans have the specs clearly marked on the box.Dont get too hung up on CFM ratings.I've found that certain fans are quieter than other regardless of CFM and Noise claims and you just have to try them out in your Mac to find the one you can live with.Luckily , we're talking about cheap parts here and the biggest hassle is dealing with Apple's dinky fan connectors. I just cut them off and splice..red to red, black to black.
If I was running major heat sources like 2 Ghz CPU upgrades or 256 MB+ vid cards, I might think twice about under-volting the fans, but I'm not.This Mac is primarily for music production and recording and I need it to be quiet, otherwise it is useless to me.
Dont be afraid to get in there and replace/fiddle with those fans. The results can be dramatic and very pleasing to your ears.

Case Fan Running at Full Speed

I accidentally shorted the case fan circuitry on my HP motherboard (explanation below) and now the fan runs at full speed all the time. Other than the fact that is was a stupid thing to do, will it be a problem long-term and should I try to reset the fan speed switch?
(Long Version) It is hot around here these days and my computer fans seemed underpowered. I put a splitter on the case fan outlet on the motherboard and added a second fan in addition to the original fan. It all worked fine except the new fan seemed to run pretty slow. I wanted to get a voltage reading from the fan plug but I accidently touched the two sensors on my volt meter and the computer immediately shut down. It started up and worked fine except the throttle was no longer working and the fans were running at full speed. This also explained why the second fan was running slowly before when they were both being throttled.
I guess in the end I got my wish to have my fans running at full power, I just wanted to see if there will be any future problems leaving it this way.
This question was solved.
View Solution.

Hello design_guy,
You should not have any problems with the fans running at full speed other than the fact you may decrease the life cycle of the fan.
You may want to install some software on the computer that will allow you to adjust the fan speed from the computer which may help you prolong the life of the fans and give you a little control over them.
Something like SpeedFan should do the trick.
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Cant see or control case fans on MSI board

I just upgraded my PC to Devils Canyon and h87-g41 pc mate. Everything is working fine... except i cant see my installed case fans and they are running on max (i assume) and making a lot of noise.
The very old board i upgraded from had option in bios for automatic fan control under overclocking (if i remember correctly). I set it to automatic and case fans were controled based on temperatures.
But the new msi board cant detect them correctly. SPeedfan and cpuid hwmonitor does not show them, and they are not show in bios. And i cant seem to find any settings for case fans.
Only fan it detects is the aux fan at the back of the fan and controls it automatically.
I used Live Updater and did total install, so i should have all the drivers.
I plugged them in right, used the pins and not the molex.

Quote from: valgusepoiss on 20-July-14, 13:15:48
I just upgraded my PC to Devils Canyon and h87-g41 pc mate. Everything is working fine... except i cant see my installed case fans and they are running on max (i assume) and making a lot of noise.
The very old board i upgraded from had option in bios for automatic fan control under overclocking (if i remember correctly). I set it to automatic and case fans were controled based on temperatures.
But the new msi board cant detect them correctly. SPeedfan and cpuid hwmonitor does not show them, and they are not show in bios. And i cant seem to find any settings for case fans.
Only fan it detects is the aux fan at the back of the fan and controls it automatically.
I used Live Updater and did total install, so i should have all the drivers.
I plugged them in right, used the pins and not the molex.
On your board, CPUfan1, CPUfan2, and Sysfan1, are the only fan headers that are setup for sensing, the other two are 3 pin headers and very likely have no sensor on them.... as far as BIOS or any software are concerned, they simply are not there, if you need them controlled, you might have to buy a fan controller.
You could plug one of your case fans into CPUfan2, if that header is not being used, and then you would have full sensing and control of it.

ThinkCentre A70 (7099) case fan, what size?

Hi,
I need to get some more air flowing through my ThinkCentre A70 (7099).
There's a place for a fan in the rear of the case below the PSU. I've measured it and I think it's either a 92MM fan or a 100MM fan but I don't want to buy the wrong size fan.
I can't find any information about it on any document from Lenovo. There is no information what so ever about a rear case fan for the ThinkCentre A70 anywhere.
Which size is it?
Regards
P-H, Sweden

You might want to use a 3-pin fan with speed adapters, so you can control the amount of air flow (rather than rely on what the BIOS thinks is correct.) I have the precurser to one of these installed with the medium speed adapter:
http://www.noctua.at/main.php?show=productview&products_id=104&lng=en
"3 speed settings for full flexibility
Providing 1600, 1250 and 1050 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-A9 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness."

Case fans ? Air in or out (Case suggestions ?)

Maybe this is a stupid question.
But because of my high CPU temps i was beginning to think that maybe i had installed all my fans the wrong way
About case fans. Should they be installed so they draw cold air into the case or push hot air out ?
I ask because i was in another Dansih forum where thay was talking about a new case with a 125cm (Big) slow fan in the side,
and the guys said it should draw cold air into the case instead of pushing hot air out... mmm
Normally hot air should be pushed out, right ??? or
Second. How can you if the fan blow or sucks air ?

I have a windowed case, so when I see some dust in the window, I do open the case and clean everything that have dust, and this is every 2 weeks, or less... :D
I understand that if you have overpressure inside the case and use filters with every fan, in the same period of time you will end with less dust inside than with underpressure, because the air will not enter through every hole of the case, but if you do not use filters (as I don't) the resulting dust in the case will be more or less the same.
I don't like filters because they greatly reduce the airflow produced by the fans, so I prefer to clean the case more often.
And about "getting as much hot air out of the box as possible", I have to say that I've tried with a big 38 x 120 mm rear exhaust fan of 103 CFM (the noise was unbereable !!) and the case temperature was the same as with the stock 25 x 120 mm fan that has much lower CFM, so every solution has its limits. I think that is very important to extract the hot air from the case, but nothing is more efficient than a direct and fresh airflow over the device to cool. I have 2 x 80 mm front fans that flows directly over my two hard drives, and they are currently at 29 and 24 ºC (the Samsung is amazingly cool), and even in summer the temperatures are barely higher.
Anyway is very difficult to find the best setup with a given case/fans configuration. I have another 80m fan in the side window, and when I've inverted the airflow (stock was in exhaust mode) the processor temperature dropped 2 ºC, but in the same time the motherboard temperature unexpectedly raised 2 ºC. I leave the side fan flowing air inside the case, but I can't understand why the motherboard temperature is higher.

Replacement Case Fans

Are the Vantec SF series Case fans good replacements for Mac Towers?
[80 mm|http://www.newegg.com/Product/Product.aspx?Item=N82E16811999602&nmmc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text--]
[120 mm|http://www.newegg.com/Product/Product.aspx?Item=N82E16811999614&nmmc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text--]
Thank you!
-Mike

When the fan's 3-pin connector is plugged into (PC) motherboards, the yellow wire provides the fan speed (RPMs). In the event that I might use it at a later time, I usually cut off the yellow wire near the connector, and then tape the end of it.

Need Specs for HP m9150f replacement Case Fan

The case fan in the rear of my HP m9150f computer is getting noisy.I need the specifications of it in order to be able to purchase a replacement such as it;s size and connector.

Hi
Please find the link given below might help you.
http://partsurfer.hp.com/Search.aspx?type=PROD&SearchText=KC880AA
Let us know how it goes!
"I work for HP."
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URGENT !! Where to connect Case FAN's

Hi there.
I just got a new Lian Li PC-v1000 Tower, equipped with 2 1200mm FAN's.
One has a standard 4 pin's power connector
One has a 3 pin power connector (With sensor).
My Motherboard (MSI-K7N2 Delta), is equipped with a CPU fan (used), and a "System Fan" (also used by the Noth/South bridge chipset) connectors.
My Power Sypply, an Antec true power 480W, is equipped with 2 standard 4 Pin's power connectror dedicated to FAN's.
I connected one of my two "tower" FAN's, but ...
where to connect the second 120 mm tower FAN ?!?
I have no place anymore on the motherboard, and this tower FAN is a 3 Pin(with sensor) connector, that I can't connect to my psu !!
Any idea ?
P.S. : My psu is also equipped with a 3-pin fan signal connector ... that should be connected to my motherboard ... but where ?!?
Thanks !

Quote
Originally posted by cdelecole
I just got a new Lian Li PC-v1000 Tower, equipped with 2 1200mm FAN's.
One has a standard 4 pin's power connector
One has a 3 pin power connector (With sensor).
i would not use those two 1200mm fans as the case might fly away
i dont recommend putting those case fans on the motherboard without checking how much power they use as its possible they will burn the motherboard.
go out and buy a fan connector adaptor which you then connect to an ordinary molex contact.
i have seen adapters that would work with those "fan only" connectors.
i use my case fan on the fan only and its enough for me however it may not be enough for everyone so keep an eye on your temps
about the psu contact.
you can change the heatsinkfan to a zalman nb47j (northbridge)
i read a review where that passive heatsink performed better than the active heatsink on a asus motherboard did.
that would free up one contact.
dont do it if you dont know what your doing.

Case fan ?

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