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mel wilson  Forum Moderator - Master member Joined: 26 Oct 2006 Total posts: 2402 Location: England, Biggin Hill, (EGKB) Age: 63 Gender: Male
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It may be obvious to some, but I would like to clear up an issue regarding the fan for the above, ......... Should it be drawing hot air away from the processor, or blowing cooler air onto it ?
Thanks
Mel.
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rd Joined: 10 Mar 2005 Total posts: 4240 Location: COMFORTABLY NUMB, in U.S.A. *** KOFF *** Age: 19 Gender: Male
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Hey Mel, all the ones I've seen are suckers. Meaning they are pulling air in around the cooling media, and blowing/pushing it out.
RD
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mel wilson  Forum Moderator - Master member Joined: 26 Oct 2006 Total posts: 2402 Location: England, Biggin Hill, (EGKB) Age: 63 Gender: Male
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Thanks RD, that was my thoughts also, just needed it clarified, thanks buddy.
Mel.
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tropicalfish  Addict to SurClaro Joined: 04 Oct 2005 Total posts: 989 Age: 4 Gender: Male
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| Like above, the air should blow into the heatsink.
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Cat1  Forum Moderator - Master member Joined: 02 Jul 2004 Total posts: 1487 Location: KFTW (Meacham Intl, Ft. Worth) Age: 39 Gender: Male
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Doesn't terminology suck... Draw fan, pusher fan, suck fan, blow fan, intake fan, exhaust fan...
A short simple way to remember it...
If the heat source is below the fan, the fan is drawing/pulling air off the heat source. It is exhausting it into the surrounding air. Conductive/Convective cooling. Heat sync/fan
For the rest... Look here:
http://www.ocforums.com/showthread.php?t=287576
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mel wilson  Forum Moderator - Master member Joined: 26 Oct 2006 Total posts: 2402 Location: England, Biggin Hill, (EGKB) Age: 63 Gender: Male
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Now I am confused.............. I'm not sure if I should spit or swallow
Mel.
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Cat1  Forum Moderator - Master member Joined: 02 Jul 2004 Total posts: 1487 Location: KFTW (Meacham Intl, Ft. Worth) Age: 39 Gender: Male
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Hmmm...
My CPU fan seems to be "pulling" air down across the cooling fins.
I have no idea what I'm talking about.
Swish and puke?
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mel wilson  Forum Moderator - Master member Joined: 26 Oct 2006 Total posts: 2402 Location: England, Biggin Hill, (EGKB) Age: 63 Gender: Male
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Ok........... Lets put it this way, should I be sucking hot air away, as RD suggests, or blowing cooler air down onto the heat scource ?
My first thoughts were with RD, the fan should be sucking hot air away from the heat scource.
Mel.
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rd Joined: 10 Mar 2005 Total posts: 4240 Location: COMFORTABLY NUMB, in U.S.A. *** KOFF *** Age: 19 Gender: Male
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It really depends on your case circulation, heatsink type, etc.
My new rig is actually pushing air into the cooling fins of the CPU. My old one was a "puller", as it had a shield around it to pull cooler air in, as close as possible to the CPU and heatsink rods.
If you can take a pic of your heatsink on the CPU, it will be easy to tell whether you should have a pusher or puller, sucker or blower.
RD
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tropicalfish  Addict to SurClaro Joined: 04 Oct 2005 Total posts: 989 Age: 4 Gender: Male
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Again, fan blows INTO heatsink. If the heatsink is against the motherboard, fan blows towards the motherboard. If it is a tower heatsink, the fan BLOWS THROUGH the heatsink, it does not suck through the heatsink.
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rd Joined: 10 Mar 2005 Total posts: 4240 Location: COMFORTABLY NUMB, in U.S.A. *** KOFF *** Age: 19 Gender: Male
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| tropicalfish wrote: | | Again, fan blows INTO heatsink. If the heatsink is against the motherboard, fan blows towards the motherboard. |
That is not 100% correct.
As said, if the there is a manifold/cover over the heatsinks on the CPU, the fan is usually set up to PULL the air around the heatsink and exit through the fan.
RD
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tropicalfish  Addict to SurClaro Joined: 04 Oct 2005 Total posts: 989 Age: 4 Gender: Male
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| rd wrote: | | tropicalfish wrote: | | Again, fan blows INTO heatsink. If the heatsink is against the motherboard, fan blows towards the motherboard. |
That is not 100% correct.
As said, if the there is a manifold/cover over the heatsinks on the CPU, the fan is usually set up to PULL the air around the heatsink and exit through the fan.
RD |
I, honestly, have yet to find such a heatsink.
Take a look around frostytech.com They always blow into the heatsink.
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rd Joined: 10 Mar 2005 Total posts: 4240 Location: COMFORTABLY NUMB, in U.S.A. *** KOFF *** Age: 19 Gender: Male
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tropicalfish  Addict to SurClaro Joined: 04 Oct 2005 Total posts: 989 Age: 4 Gender: Male
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Almost all stock heatsink and performance air heatsinks have the fan blowing INTO the heatsink.
Again, see diagram. Second one is a performance 120mm heatpipe heatsink.
Frostytech reviews all kinds of heatsinks, stock and high performance coolers. You'll find that they all have fans blowing into the heatsink.
As a little test for you, look inside your computer. Does it blow in at the heatsink, or does it blow away from the motherboard? If it blows towards the motherboard, try turning it so it blows away from the motherboard. You'll find that your temps will go up at least 15C.
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rd Joined: 10 Mar 2005 Total posts: 4240 Location: COMFORTABLY NUMB, in U.S.A. *** KOFF *** Age: 19 Gender: Male
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| tropicalfish wrote: |
Almost all stock heatsink and performance air heatsinks have the fan blowing INTO the heatsink.
Again, see diagram. Second one is a performance 120mm heatpipe heatsink.
Frostytech reviews all kinds of heatsinks, stock and high performance coolers. You'll find that they all have fans blowing into the heatsink.
As a little test for you, look inside your computer. Does it blow in at the heatsink, or does it blow away from the motherboard? If it blows towards the motherboard, try turning it so it blows away from the motherboard. You'll find that your temps will go up at least 15C. |
Like I said "Not all fans blow into the heatsink"
Otherwise, I am using this for cooling my CPU. Noctua NH-U12P SE1366 http://www.newegg.com/Product/Product.aspx?Item=N82E16835608007&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-CPU+Cooling-_-Noctua-_-35608007
With the 3.5Ghz OC, and running prime95 in blended mode for two hours, my temp is stable at 66C.
RD
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