CPU fans... Pushers or pullers..

[Slash621]

I mounted mine with the label facing up... It is a YS tech adjustable..

But a friend told me last night to flip it... personally i think this is bs.. but can anyone clarify for me which way is right?

My barton 2500+ is running at 29-30C idle..

 

[InlineFive]

Wow, if those are your temperaturess right now I say let your fan where it is! What are the temperatures under load?

And in general the fan should be blowing down onto the processor and heatsink but some heatsinks can have the fan facing outward, especially the Alphas.

 

[Elcs]

If it isnt broke, dont fix it.

Most heatsinks are designed to work best when blowing air over them, sucking towards the CPU.

 

[FFactory0x]

yea i would like to know as well. I use sk-7 and ys adjustable as well

 

[JBT]

Id say it really depends on the heatsink easiest way to see what works best is to try it out. My SLK900A likes to be blown on so I have it like that. I have had others that like it the other way. Just try it your self I'd say.

 

[Johnbear007]

I'm surprised no one has mentioend this, but on most fans the fan blows out from the side the label is on.

So with your current configuration you are sucking, not blowing.

I have tried this on my SLK 900A and found that it likes to be blown on, so the label is DOWN.

 

[chocoruacal]

Here's a crazy thought...take 10 minutes and try it both ways...see which produces lower temps. With the following heatsinks:

SK7
AX7
800
900

I get lower temps by blowing air ONTO the sink. I use large (80mm and 92mm) fans, so as an added bonus, the area around the socket gets some air as well.

 

[maluckey]

unless it's a shrouded design that funnels air from the CPU, (Alpha 8045, Scythe Kamakaze, etc), blowing onto he cooler is generally better. Try it both ways, and also monitor board temps, because reverse flow sometimes lets the board run cooler by blowing the hotter air away from the board.

 

[Horsep0wer]

all this talk about sucking and blowing is making me excited. where's the hookers?

 

[Johnbear007]

Originally posted by: Horsep0wer
all this talk about sucking and blowing is making me excited. where's the hookers?

some people would find that comment crass or innapropriate. I, However, Enjoyed it.

 

[Amorphus]

Originally posted by: Johnbear007

Originally posted by: Horsep0wer
all this talk about sucking and blowing is making me excited. where's the hookers?

some people would find that comment crass or innapropriate. I, However, Enjoyed it.

besides, thats basically Off Topic, in GH.


its a general pattern that without a shroud, heatsinks don't do well with the fan sucking air away from the heatsink. however, for the low-profile (1U, 2U, etc.) heatsinks, sucking air though them probably will lead the better temps.

Of course, just try it for yourself.

 

[JustAnAverageGuy]

Use whatever works best

 

[Johnbear007]

Originally posted by: Amorphus

Originally posted by: Johnbear007

Originally posted by: Horsep0wer
all this talk about sucking and blowing is making me excited. where's the hookers?

some people would find that comment crass or innapropriate. I, However, Enjoyed it.

besides, thats basically Off Topic, in GH.


its a general pattern that without a shroud, heatsinks don't do well with the fan sucking air away from the heatsink. however, for the low-profile (1U, 2U, etc.) heatsinks, sucking air though them probably will lead the better temps.

Of course, just try it for yourself.

I disagree, I think you could call that 'general hardware'

 

[Slash621]

OK so.. just to clear things up here is the setup

Barton 2500+ with SLK 800 + YS tech adjustable fan on FULL THROTTLE mounted LABEL UP

So far idling temp is about 33C.. I dont know what load is because it is a fresh install of XP and i havent yet been able to get MBM or prime 95 on the computer yet
i am about to do that

 

[Slash621]

I have noticed that HARDocp as well as overlcockers cafe mount their fans LABEL UP

 

[Slash621]

ttt?

 

[cockeyed]

Most fans I've seen blow into the heatsink. However, a friend has a HP Pavilion which uses a large CPU heatsink surounded by a plastic tunnel attached to a large fan exhausting out the rear of the case. It appears to work well and moves a high volume of air.

 

[Sid59]

saw my idle temps drop by 8 C and load temps by 5C., did the experiment today so the weather couldn't effect the differences. I had it blowing air away and now it's blowing air IN.

 

[Slash621]

so far with my 2500 clocked to 3200 speed (200x11) i am getting 38C at full load... it drops to 37 and 36 depending on if the lights are on in the room to heat the air... The computer has been running full load prime 95 for 5 hours now...

 

[Slash621]

this is with my fan LABEL UP blowing AWAY from the heatsink

 

[BaboonGuy]

Originally posted by: chocoruacal
Here's a crazy thought...take 10 minutes and try it both ways...see which produces lower temps. With the following heatsinks:

SK7
AX7
800
900

I get lower temps by blowing air ONTO the sink. I use large (80mm and 92mm) fans, so as an added bonus, the area around the socket gets some air as well.

aint 10 minutes with those damn mounting needles on the SK-7