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Rear fan Noise

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July 30, 2012 11:17:45 AM

Hey guys,
Ok so built my system a while back now, and everything is fine, except within the last two month or so the rear fan, has become very loud.

I've taken it all apart and cleaned it; the only other thing i changed to the system was my CPU cooler, and when i did that 3 month ago my computer was near silent, you couldnt even tell it was turned on;

so my question is why is my rear fan making so much noise now?

thanks

More about : rear fan noise

a b K Overclocking
July 30, 2012 12:44:18 PM

A very confusing way to put the question.
I can't figure out which fan is making the noise? Was it the CPU fan that you changed? But if it wasn't making any noise why did you end up changing that?
If it was the rear fan that was making noise , why didn't you change that?

Now that you've changed the CPU fan , which fan seems to be making the noise, the CPU fan or the Rear case fan?
What way is the air being pushed by the rear cabinet fan?
July 30, 2012 12:49:23 PM

Read it back and sorry it is pretty confusing; In my defense i just woke at the time!

3 Month ago i installed a new CPU fan = Near silent couldn't even tell computer was turned on;
2 Month ago the rear NB case fan got very loud

I changed the CPU fan because i had a better cooler, not because of the noise:
Case fan is pushing Airflow out
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a b K Overclocking
July 30, 2012 12:51:01 PM

"NB case fan"?
North Bridge????
July 30, 2012 12:55:40 PM

Thats what it says in bios;
Running at 1300rpm
a b K Overclocking
July 30, 2012 1:03:33 PM

Connect the fan to a header called chassis fan on the mobo.
July 30, 2012 1:34:33 PM

My motherboard only has NB fan SYS fan And CPU fan slots
a b K Overclocking
July 31, 2012 5:33:06 AM

What motherboard is this?
Could you give us the make and model?
a b K Overclocking
July 31, 2012 12:19:38 PM

The board has just 2 fan headers on the CPU Fan Header (Just to the left top of the RAM Slots)
Ann the second is the SYS FAN header (right under the last PCI Slot).
Where is the NB Fan Connected?
July 31, 2012 12:41:56 PM

Just above the PCI-E slot

on the left
a b K Overclocking
August 1, 2012 12:46:42 PM

OK, I see it, try to connect the rear fan to the sys-fan header below the last pci slot.
August 1, 2012 12:55:42 PM

I'll give it a go, i just took it out completely last night with minor changes to temps aswell
!