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[ARCHIVED THREAD] - CPU Fan, which direction?

Posted: 4/1/2010 6:18:12 PM EDT

Never paid it much attention (in all the boxes I've built) but I recently bought a 125W processor that is a serious beast and creates some heat, just noticed my CPU fan is blowing out from the CPU and not onto the heat sink, is this correct?

Posted: 4/1/2010 6:18:59 PM EDT

[#1]

That's how I've seen it...

Posted: 4/1/2010 6:19:02 PM EDT

[#2]

All of them I have seen, the primary case fan pulls hot air out from the case.

Posted: 4/1/2010 6:19:59 PM EDT

[#3]

If it blows in, it will only serve to coat the inside of your case with dust.

Posted: 4/1/2010 6:20:16 PM EDT

[#4]

I asked this same question awhile ago and I was told that the fan should be blowing air onto the heatsink..

Posted: 4/1/2010 6:20:29 PM EDT

[#5]

have one extra fan besides the one on the CPU and it was originally blowing out from the case (the way I originally installed it), swapped the direction and opened up the bottom PC slots, doesn't seem to make a difference according to CoreTemp.

Posted: 4/1/2010 6:20:55 PM EDT

[#6]

get both

Posted: 4/1/2010 6:20:59 PM EDT

[#7]

Yeah, the fan is supposed to draw air across the vanes of the heatsink, so it should be blowing "out."

Posted: 4/1/2010 6:23:04 PM EDT

[#8]

what about a copper heat sink instead? We use those a lot at work on systems (copper anyway).

This one looks to be aluminum.

Posted: 4/1/2010 6:30:15 PM EDT

[#9]

I'll take: Depends on the heatsink for $500 Bob.

Most retail proc heatsinks will only allow you to install them one way. Some aftermarket heatsinks will specify which direction.

Posted: 4/1/2010 6:39:54 PM EDT

[#10]

Never seen an oem fan blow away from the processor, they all blow at it. (Disclaimer, I have built a lot of rigs, but I have not built every rig)

Case fan direction depends on your total airflow design.

My rig? Watercooled FTW.

[ARCHIVED THREAD] - CPU Fan, which direction?

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[ARCHIVED THREAD] - CPU Fan, which direction?

[ARCHIVED THREAD] - CPU Fan, which direction?