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Adding fan to NB heatsink cause lower CPU temps?

post #1 of 11
Thread Starter 
This is what someone told me on my corsair h50 question/thread. He added a fan in that area of the NB and his CPU core temps decreased by 4c. What are your thoughts. Am looking to decease my CPU temps.

Also, i've seen people adding a fan behind the CPU socket. Again, thoughts please.

Interested in what you guy's and girls have to say on all this. Thank you.
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post #2 of 11
well, i doubt it actually helps your cpu in any way, even though it might change the readings on the sensors..
also, a fan might help if you can fit it, but just putting a fan on there wont do, you have to get the air flowing from place a, pass the socket backside, to place b. I dont know what kind of space you're dealing with, but in a normal case I doubt it'll work
    
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post #3 of 11
Thread Starter 
Quote:
Originally Posted by Skiivari View Post
well, i doubt it actually helps your cpu in any way, even though it might change the readings on the sensors..
also, a fan might help if you can fit it, but just putting a fan on there wont do, you have to get the air flowing from place a, pass the socket backside, to place b. I dont know what kind of space you're dealing with, but in a normal case I doubt it'll work
This is the fan on the back of the CPU socket right your on about yes?
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post #4 of 11
Depends on where your NB is located I suppose. Heatsinking a NB has no direct effect on CPU temps, unless it is located nearby the CPU socket, in which case it might have an indirect effect by pulling heat off the motherboard (and with adequate airflow, up and away) and by extension the CPU. Very case by case though.
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post #5 of 11
Thread Starter 
Quote:
Originally Posted by ocpokey View Post
Depends on where your NB is located I suppose. Heatsinking a NB has no direct effect on CPU temps, unless it is located nearby the CPU socket, in which case it might have an indirect effect by pulling heat off the motherboard (and with adequate airflow, up and away) and by extension the CPU. Very case by case though.
They are all located just about in the same place on every motherboard. My northbridge heatsink is way too hot to touch for longer than 5 seconds so is it worth a try? I have a mini akasa i can attach with a cable tie.
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post #6 of 11
I have also noted that adding a NB fan can indeed lower CPU temps. I have no real scientific explanation for it, but in instances with really hot NB chips, it has helped CPU temps. P35 chipset comes to mind. Some of those got uber hot with OCing.

Also, if your NB sink is that hot, you should absolutely add a fan. It will not only help with temps, but can add stability.
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post #7 of 11
Thread Starter 
Quote:
Originally Posted by corky dorkelson View Post
I have also noted that adding a NB fan can indeed lower CPU temps. I have no real scientific explanation for it, but in instances with really hot NB chips, it has helped CPU temps. P35 chipset comes to mind. Some of those got uber hot with OCing.
So should i mount a 120MM fan from a 10cm distance towards the NB or directly attach the mini 5400rpm akasa NB fan at the side to it blows through the grills? Please no "obvious answer is obvious" I am just double checking. Thank you.
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post #8 of 11
Quote:
Originally Posted by BradleyW View Post
So should i mount a 120MM fan from a 10cm distance towards the NB or directly attach the mini 5400rpm akasa NB fan at the side to it blows through the grills? Please no "obvious answer is obvious" I am just double checking. Thank you.
Well, I personally would do something a bit smaller directly onto the sink. I usually use 60mm fans. The only problem is, they tend to be a bit noisy. If you can get one on a fan controller, that would be ideal. Or even control it with your motherboard if you can.
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post #9 of 11
Thread Starter 
Quote:
Originally Posted by corky dorkelson View Post
Well, I personally would do something a bit smaller directly onto the sink. I usually use 60mm fans. The only problem is, they tend to be a bit noisy. If you can get one on a fan controller, that would be ideal. Or even control it with your motherboard if you can.
My fan is as follows.

40mmx40mmx10mm
5400rpm
25db(a)
6CFM
Sleeve bearing, 3 pin, 12v

25 is quite.
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post #10 of 11
Thread Starter 
Added fan. reduce by 1c. But the NB HS is still very hot so i've got rid of the fan. Waste of time. Any other thoughts?
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