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Intake fans

C

celwin

[H]ard|Gawd
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Oct 18, 2006
Messages
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I have two intake fans and two exhaust fans. My pc is too damn loud. I was thinking of disconnecting the intake fans at the front to lower the noise level. Is this adviseable? I figure it would be fine since most pcs you buy only have exhaust fans. Any input would be appreciated.
 
Changing to lower speed 120's and getting rid of all my 80's helped a bunch.
 
Susquehannock said:
7 volt fan mod .... easy as pie.

http://www.techpowerup.com/articles/other/137

You can even do a 5 volt mod, which is also on that page, to slow them down even more.

Just be sure your fans spin up from a dead stop at those voltages.
Click to expand...

No way to tell if my fans can start at 7v. I would not want to do this mod to find out they do not. I think I'll go ahead and simply disconnect the intake fans. If the temps inside the case gets too high, I'll reconnect.
 
celwin said:
No way to tell if my fans can start at 7v. I would not want to do this mod to find out they do not. I think I'll go ahead and simply disconnect the intake fans. If the temps inside the case gets too high, I'll reconnect.
Click to expand...
Not sure what kind of modding skillz you have ... If you have an extra molex adapter you could easily spice the 12V and 5V wires together
then connect it to the fan & see. Every 80mm fan I have tried spins up at 7V, but not always at 5V. 120mm fans take a bit more juice.
 
You using stock case fans? Considered investing in 4x Yate Loons? Got deep pockets? Pick up 4x Noctuas.
 
Every fan in the world starts up at 7v.

Their cutoffs are generally 4-6v.

Or, invest in a Scythe Kama Bay 120mm intake fan, and lower the front fans to 0-5v.
 
You should not have any problems disconnecting the front fans, but it depends on your case layout. You can always go back if you any heat issues. If you want to try it, it's best to remove the fans instead of just disconnecting them, that way they won't obstruct the airflow. Find a way to put the hard drives in front of where the two 80mm were (if they aren't already there), this way you'll have cool running hard drives at a much lower noise level.

I removed the two 80mm front fans on my lian li PC65 many years ago, and never had a problem. The only case fans running are an undervolted 80mm panaflo at the back and an undervolted papst 120mm fan in the PSU. This setup gives me plenty of airflow, I'm amazed at how much dust gets trapped on the front filter sometimes, it means the two low speed fans at the back are doing a good job. The hard drive cage is right in front of the bottom front intake vents, so the drives run at a very cool 30ºC most of the time which is very good for not having active cooling over them. But to achieve this I had to close a lot of little holes throughout the case to force the air to only enter through the bottom front vents and travel across the hard drives.
 
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