Whats the best way to connect up lots of case fans?

neocon

neocon

neocon

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Whats the best way to connect up lots of case fans?

Considering that there is one cpu fan header and one case fan header.

I want to have:

One HSF for cpu which takes up the cpu fan header.

How do I connect up all these fans?

One 120mm fan at rear of case.
One fan at the front of the case 80mm.
2 fans on the side panel 1x120mm and 1x80mm.

Do I string them all together and plug into a 4-pin power connector?
What about controlling their speeds?
 
neocon said:
Whats the best way to connect up lots of case fans?

Considering that there is one cpu fan header and one case fan header.

I want to have:

One HSF for cpu which takes up the cpu fan header.

How do I connect up all these fans?

One 120mm fan at rear of case.
One fan at the front of the case 80mm.
2 fans on the side panel 1x120mm and 1x80mm.

Do I string them all together and plug into a 4-pin power connector?
What about controlling their speeds?
Click to expand...

If the CPU fan is suitable for the motherboard fit it to that (but not if it's a high speed/high current fan ie Delta!)

If you want fixed speed case fans just fit them to 4 pin molex, for a slower speed adjust the pins on the fans so they run at 7v. Done this on a 12cm Thermaltake Thunderblade (bit whooshy at 12v, fine at 7v)
 
How do you adjust the pins on the fans so they run at 7v?

I can't be bothered with a fan controller. Thanks for advice.
 
"Almost all case fans run on the 12V DC supplied through a power supply. One way to reduce fan noise is to supply a lower voltage to the fan. All ATX power supplies provide both 12V and 5V DC outputs. A case fan could run on a 5V voltage, but the 58.3% voltage reduction would significantly reduce the cooling power of the case fan. An alternative is to use the 12V as the positive and the 5V as the negative (ground), using the voltage difference as 7V. With 7V, the voltage is dropped only 41.7% from 12V, but it is 40% higher than 5V allowing enough cooling while effectively reducing fan noise."
(http://www.directron.com/12to7.html)
 
Dont run too many fans off one header cos they stop working (header not fans), you can run (in my experiance) 2 x 120 fans from one header.
I have my 2 x 120 fans attached to my WC rad from the CPU header controlled by speedfan and my case fans (4x120mm) are controlled by a controller.
 
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