Want to make my PC very quiet can I risk make it hotter in exchange?

Told you they'd be noisy didn't I.

What motherboard do you have?. I can see its a Gigabyte from the image at the top but it doesn't state anything more.

PWR probably refers to the Power fan header which is usually 12v with no PWM or DC regulation function. This is normally where you'd connect the fan from the power supply if it were externally powered.

The CPU fan is usually a 4 pin PWM connector (but also fits 3 pins) and if it's like my Gigabyte board remains the only one with a controllable PWM signal.

If your pump is connected there it is waste as you aren't supposed to slow that down. Might be more advantageous to have your radiator fan connected to the CPU header and control it via your bios or the Gigabyte fan software. Using a PWM splitter here allows you to hook up several PWM fans and have then controlled in a similar way that reacts well to temperature increases.
 
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Tealc said:
Told you they'd be noisy didn't I.

What motherboard do you have?. I can see its a Gigabyte from the image at the top but it doesn't state anything more.

PWR probably refers to the Power fan header which is usually 12v with no PWM or DC regulation function. This is normally where you'd connect the fan from the power supply if it were externally powered.

The CPU fan is usually a 4 pin PWM connector (but also fits 3 pins) and if it's like my Gigabyte board remains the only one with a controllable PWM signal.

If your pump is connected there it is waste as you aren't supposed to slow that down. Might be more advantageous to have your radiator fan connected to the CPU header and control it via your bios or the Gigabyte fan software. Using a PWM splitter here allows you to hook up several PWM fans and have then controlled in a similar way that reacts well to temperature increases.
Click to expand...

lol i knew you would be right, but then again, as i said, its probably loud because they are running at full speed, once i get them down to 800ish rpm it should be quiet, but ye probably a waste of money because my current fans will likely be just as quiet when they at these low rpms

motherboard is in the spec on 1st post - Gigabyte GA-Z68A-D3-B3, Intel Z68

i think i might just buy a cheap fan controller and hook them all up like that, i dont understand how to control them in the bios, i went into it and there were various options.

I change one from normal to silent but its hasnt made any difference
 
As I thought your CPU FAN header is indeed PWM enabled on pin 4, the other 4 pin header is wired differently and won't do PWM on Pin 4.

I don't have a PWM fan on my CPU header either so haven't got anything set in BIOS to control it but rather use Speedfan in Windows to use rudimentary voltage control to slow my fan down under idle conditions. I set a reference temperature for 100% speed (1000rpm) and while the CPU is below this it goes down to 600 rpm.

A simple fan controller would be ideal for normal fans but not so great for PWM fans as you won't get them to go quite as slow, or at least I wouldn't have thought.
 
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Try the Apache in the CPU_FAN header, and put the pump in the PWR_FAN header. Try modifiying the fan profile with Easytune, Speedfan or in BIOS. Have the Apache fitted to your radiator but do beware that you will lose ultimate cooling capaiblity over the fast stock fans they always seem to fit to these all in one water coolers.

You can use a splitter such as
http://www.overclockers.co.uk/showproduct.php?prodid=CB-070-AK

or

http://www.overclockers.co.uk/showproduct.php?prodid=CB-071-AK

or

http://www.overclockers.co.uk/showproduct.php?prodid=CB-031-AK

....to connect both the 120mm and 140mm PWM fans you have purchased to the same header and have both react gradually to temperature changes.
 
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Tealc said:
Try the Apache in the CPU_FAN header, and put the pump in the PWR_FAN header. Try modifiying the fan profile with Easytune, Speedfan or in BIOS. Have the Apache fitted to your radiator but do beware that you will lose ultimate cooling capaiblity over the fast stock fans they always seem to fit to these all in one water coolers.

You can use a splitter such as
http://www.overclockers.co.uk/showproduct.php?prodid=CB-070-AK

or

http://www.overclockers.co.uk/showproduct.php?prodid=CB-071-AK

or

http://www.overclockers.co.uk/showproduct.php?prodid=CB-031-AK

....to connect both the 120mm and 140mm PWM fans you have purchased to the same header and have both react gradually to temperature changes.
Click to expand...

ok ill try that and report back

thanks
 
ive plugged the radiator fan (apache) into the CPU Fan Header but still cannot control it in SpeedFan

HWMonitor is just saying its stuck at 1400 rpm

at the moment i only have 1 fan on, i have turned off the top and front 140mm fans, all thats running is the radiator fan at the back

gxam.png
 
As a guess I'd say your PWM function isn't enabled considering that all PWM readings are zero.

In BIOS PC Health Status you should have CPU Smart Fan control and a possible sub menu CPU Smart Fan mode. One of these should be on Manual and then you can adjust the slope PWM to suit your needs. The motherboard manual has 1.75% PWM/degree C which means at 20 C you have 35%, 50 C you have 87.5% which in my mind is a little aggressive as you'd be at 100% at 57 Degrees C.
 
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Ok what setting is the CPU Smart Fan Mode? You'll ideally want PWM here. It could be that the BIOS isn't detecting your 4 pin fan, or when this first checked you had a 3 pin on there and it ignores changes, or something.
 
The Gigabyte software for your motherboard will let you set a custom fan profile if you don't want to set it in the Bios. I'll dig out the name of the Gigabyte software when I get home - and you need to make sure the software starts up with Windows.

With my motherboard I have 2 fans turned off at below 25 degrees, ramping upto 80% at about 50 degrees. I then have 4 other fans set to run at just 600rpm using a cheap and cheerful fan controller that came with the case. In this way, my rig is neally completely silent. I need to get on the floor to hear it.

Only some of the ports on your board can PWM/voltage change the speed of fans, and if you BIOS flash, you need to change back to Voltage control (instead of PWM). This caught me out more than once.

EDIT: Some of that last sentence can be ignored when using PWM fans...
 
Gigabyte EasyTune is the stuff that does things like overclocking, voltages and fan speed control. You can set this to do a automated fan profile, set this to load with Windows startup. Should be able to grab the current version from the gigabyte website.
 
im currently watercooling my 2500k and 5870 in a single loop, no fans at all and temps goes upto 65C when OCed to 4.5GHz.

the only thing i can hear is the pump, which is much quieter than fans...
 
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