Official GIGABYTE Forum
Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: DerAltesTroops on January 31, 2012, 06:08:02 pm
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Hello everyone. I have a "Cooler Master Silencio 550" case and i decided to install an extra fan. I installed the "Akasa Apache Fan", but when i boot up it doesn't rotate. It just rotates a bit then stop and it goes on like that. I have plugged it into my SYS_FAN 2 connector. Could it have something to do with it being a PWM fan?
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Is it plugged into a 4-pin PWM header?
What are your fan settings in BIOS? ("Silent" vs. "Performance", etc.)
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It's plugged into my SYS_FAN 2 connector.
Where can i see my fan settings? I can't seem to find it in the BIOS
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How do i know if it's a PWM connector?
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Whilst in the BIOS the fan suddenly started rotating though only at 195 RPM. I noticed on the page that i bought it states that it has "PWM automatic speed control". How does this work?
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SYS_FAN2 works with speed control. When motherboard temperature is low, it spins at low speed.
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Is there a way to make it spin at full speed at all time?
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No, I don't think so. You have to plug your fan in PWR_FAN or SYS_FAN1 instead, to work at full speed.
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Ok, but they are both 3 pin connectors and my fan is a 4 pin. Is there another way? Or is it possible to connect a 4 pin to a 3 pin?
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Yes, you can connect it to a 3-pin connector. You can also connect a 3-pin fan to the 4-pin connector. :)
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SYS_Fan2 is always bogus, I don't know why they wont change that!!
It always runs at half voltage (5-7V), so many fans can't even start when using that header, you'll need to use another header as suggested above
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Ok, but they are both 3 pin connectors and my fan is a 4 pin. Is there another way? Or is it possible to connect a 4 pin to a 3 pin?
Yes,you can connect a 3 pin to a 4 pin header. It only fits one way. Or,
You can use a Molex adapter. Connect your fan to an extra Molex connector from your power supply.
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As Lsdmeasap has pointed out SYSFAN_2 only works at half speed/voltage so you are really banging your head against the proverbial brick wall there. I would just use a molex adapter and connect direct to the PSU.
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I connected it to the PSU and it works like a charm ;) Thanks alot guys
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I have this EXACT issue :o
P67A-UD4-B3.
Akasa Apache Black
Sys_Fan2
Fan spins on boot, 5sec spin, powers down, and twitches non stop all the time, won't spin in any circumstance!
Called Gigabyte tech and they said no problem, RMA the board and we'll sort it..
I thought HMM?! Shouldn't need to be done as this seems like it's an issue with some firmware or voltage going to that header.
I've just rebuilt my system (can be seen in pictures of members computers thread), and i've bought a load of new fans, only to be sadly disappointed that I can't use a SINGLE FAN in my system how I want to use it.
They're all 4 pin connectors, my board has Cpu fan, Pwr fan, Sys fan 1, Sys fan 2, cpu and sys fan 2 are 4 pin, pwr and sys fan 1 are 3 pin, you can't connect a 4pin to a 3pin as it'll spin at full speed constantly which is not what I want, I want it plugged into 4 pin, and to be controlled by the motherboard, but this obviously can't be done??
I'm yet to find a fix to my issue, can't connect cpu fan to a 3 pin connector (can I???) (Noctua NH D14 with dual HS + Fan, using splitter onto cpu fan header to run both fans), can't run any of my fans off the 3 pin headers as they spin at full speed, can't use the only 4 pin either...
Now. Is there a fix to this? Is there a fan I can buy that's SOOOO quiet you can't hear it? I originally went with the Noctua S12B ULN fans but the nice chaps at Scan.co.uk recommended the Akasa Apache Black's which don't come with any screws or ANYTHING. So is there 3 pin fans I can buy that are silent as a dead doormouse? Here's a link I've found useful: http://www.quietpc.com/gb-en-gbp/products/120mmfans then arrange it by DBA.
Can I get slow spinning, high(ish) airflow, quiet fans, to run from my 3 pin headers, or any that will work on my sys fan 2 header? I've got like one day left to return these akasa fan's back to Scan.. So any help ASAP would be brilliant fellas! (I'm clued up on what i've done before, but this is my first gaming rig with loads of fans, so not a clue! Google is my best friend lolz)
TA! MiiCK ;D
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Some options:
- Get a fan that doesn't require high voltage to start (ones with variable speeds built into them)
- You can get a fan that has its own temp sensor and plug it into power directly
- Use a resistor connected to +12v to augment SYSFAN_2's output voltage (or a transistor if you want full interpolation)
I use the Antec Tri-Cools that came with my Nine-Hundred Twos and a Twelve Hundred. I have them connected to a 3-position military switch fan controller (UP=12v, MIDDLE=OFF, DOWN=5v). I have the fan's built-in switches to H (high, full voltage) and flip the fan controller to the 5v position when I use the computer (its always on); they start fine. The only exception to that is the 200mm fan on top: I had to modify its correlating switch on the fan controller to drop ~7v to get it to start.
The question to ask is your fan not spinning because the BIOS isn't telling it to because of temps/config or because the fan requires more voltage to start? You can test this by dropping 5v to it instead of 12v: get a Molex/3-pin adapter as shown above and reconnect the 3-pin +12v wire to +5v and see if it reliably starts. Even if it does, SYSFAN_2's output is still in question (you don't want the BIOS feeding it, say, 2.5v most of the time, burning out the fan), hence my third suggestion.
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SYS_Fan2 has been like this for many years, on ALL Gigabyte boards I have ever used, so it's not something anyone should be told by Gigabyte to RMA the board over, not sure what they were thinking tell you that because any new board they send you will be exactly the same for SYS_Fan2.
They do it on purpose by design, and I'm not sure why, but they wont change it as I know it's been brought up with them many times in he past.
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I'd guess its for small (~25mm) 5-volt fans you put on the chipset heatsink.
Here's another option: here's a 120mm 5-volt fan: http://www.coolerguys.com/840556087908.html
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As Lsdmeasap says the SYSFAN_2 header has always been the same and oinly produces half the voltage of the other fan headers. Anyone who suggests an RMA for that is severely misinforming the member with the problem. All boards are the same as they come off the production line.
Miick you need a fan that has a starting voltage of 5v to work on that header.
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The more you take OFF the mobo and use other methods (Front bay fan controller) the better ... mobo headers can be easily overloaded.... trying to suck 12V off a 5V header ..... you get the picture
Aussie Allan
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As I'm not overly clued up on fans etc, can you help me with my issue? I've got a load of fans sitting here doing nothing.
Can I get some fan controller (I've got one in my Zalman Z9 case, runs two top fans that's it) that will power all my necessary fans and let me control the speeds of them? My current fan controller is 3pin and the speeds of the fan can be changed but they're too loud for my liking, so ideally I want to change them.
I'm not overly bothered about brand etc, if I can get some cheap make fan controller (that slots into one of my 5.25" drive bays???) that can power some(all?) of my fans, it'd be great, basically I'm going to use a total of 6 fans, and right now i'm using some random 3 pin fans that are loud and ugly if someone can help me sort this before monday I can keep my fans instead of returning :)
TA, MiiCK
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Fans can only pull whatever voltage is available; what can be overloaded is current. IIRC, fan Giga's fan headers can support up to 1A, which is way more than a fan needs (one or two tenths ampere). Overbuilding power is one reason I like Gigabyte.
If you want understated: http://www.microcenter.com/single_product_results.phtml?product_id=0332416
Put two adjacent fans on one connector (i.e. top two). 5v setting is quiet, 12v setting isn't; I've never needed 12v.
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I've just found this, seems ideal for me.. can everyone check if it's suitable for my needs?
6x 4 pin Akasa Apache Black fans, need to control them to be super quiet
fit in my 5.25 bay
will i need adapters to stretch my fans from say, the back panel of my case to the front panel of the fan controller??
thanks
http://www.scan.co.uk/products/nesteq-fanmax-8-channel-black-fan-controller
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JADEC have a say in here and generally ..... 120mm fans have about 300mm of lead length to play with .....so depends where you put them in the case.......if you use a third party front bay fan header...... they give you generally another 300mm+ to play with.
Better photo's of the wiring and review here...
http://www.bit-tech.net/hardware/cooling/2009/08/15/three-multi-channel-fan-controllers-tested/1
Aussie Allan
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Cheers Allan, looks like I can't get that one then? Picture http://images.bit-tech.net/content_images/2009/08/three-multi-channel-fan-controllers-tested/2.jpg shows 3 pin stuff and my fans are 4 pin.. i'm totally confused. do i need to buy a load of 3 pin fans now? surely there's a way to get my 4 pin fans working with some cable and let me control the speeds :-\
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I haven't got time ATM to read the lot but I remember that this one has 3 or 4 pin capabilities ..... a little reading and research is in order...
Or call Scan or Aria sales Monday Morning for a answer if you don't feel like the read.
Aussie Allan
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A 4-pin fan controller may be hard to find. The review said that one had 3-pin headers but see if they make a PWM version. It's nice, goes with your Zalman case, and gives you finer control that you want with switches so you don't have to fiddle constantly.
Fan extension cables depend on your wiring; I used them on mine so I could wire them between the chassis and cover like you eventually did, making the runs a lot longer.
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A 4-pin fan controller may be hard to find.
I agree with Rolo in as much as I haven't come across a four pin fan controller in the normal types. I think Zalman do a specific one on one of their CPU heatsinks and from memory it is dismountable and can be moved from the HSF.
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So, putting a 4pin fan on a 3pin header makes them run at full speed, but i'm guessing a 3pin fan connected to a 3pin fan controller lets me control the speeds, correct? So looks like i'll have to return my fans on Monday. Tried purposefully to get some quiet fans with high airflow. Any recommendations on 3pin fans (need 6) and a decent fan controller? (the one I picked should do fine? or any better/cheaper ones?)
Ta
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4-pin PWM connector .....
Is intended to connect to your mobo so that your mobo can regulate its speed automatically, without an additional fan controller.
You can run the fans from a bay speed controller but will require a 4 pin to 3 pin connector ...... £1.00 on eBay .... no brainer!
Aussie Allan
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I've just ordered a 4pin pwm adapter, cost a fiver.. plugging it into my cpu fan header, going to power my 2 cpu fans off it and 3 case fans.. should do the trick, will update if it's sorted and it can help anyone in future.
P.S I think the standard Noctua NH D14 fans are waaaay too loud in my honest opinion, replacing those tomorrow :D