Cooling My Computer

jack-o-bytes · 11-Jul-2009, 10:15 AM #1

I have a computer that has 2 80mm fans on the bottem blowing air into the graphics card area and a fan also on the psu. I am thinking of putting higher cfm fans on the 2 80mm fan holes and also cutting a hole in the top of the case and putting a giant 120mm fan in the top blowing out. Is this a good. Idea?

BG-0 · 11-Jul-2009, 10:32 AM #2

Can't say. There's really no airflow pattern AT ALL in that case. It could work with the 120mm on top, as well as with a 80mm fan at the rear, also blowing out. Optimal would probably be (one fan blowing to the graphics card) (I wouldn't even have one, it just interrupts the airflow), one or two 120 at the low front blowing in, top and/or back 120mm blowing out. Not really possible in your case, but... Mmh.

jack-o-bytes · 11-Jul-2009, 11:07 AM #3

The idea is to have the 80mm fans blowing in. The air then gets slightly warmed by the graphics card and the drifts up through the cpu fan and the drifts up to the top of the case where it is removed by the psu fan and the soon to be 120mm top fan.

BG-0 · 11-Jul-2009, 11:09 AM #4

That's a nice idea, but 75% of the heat from the graphics card comes from the bottom and can't rise up like that.

jack-o-bytes · 11-Jul-2009, 11:13 AM #5

I think that is why the 2 80mm fans are so low down so they can force cold air upwards.

BG-0 · 11-Jul-2009, 11:31 AM #6

However strong fans, it can't push air through a PCB. Get it?

jack-o-bytes · 11-Jul-2009, 11:40 AM #7

Yeah I suppose but there is about a 1" gap between the fans blowing in and the graphics card PCB. Also one of the 80mm fans is above the AGP card slot any way.

BG-0 · 11-Jul-2009, 02:10 PM #8

Yes, the air gets up there, but not the heat that comes from below the card. There'e a difference.

jack-o-bytes · 12-Jul-2009, 01:43 PM #9

Check my two diagrams that I have made of my computer and a simple temperatue guide. I have thought this through now and I have decided using my diagrams that a 120mm fan will make a big difference.

BG-0 · 12-Jul-2009, 01:54 PM **#10**

Well it's a good plan, pretty much the best you can curretly do. Your case design is a bit crappy, so the airflow will be rather weak. The 120mm exhaust fan doesn't create that much of a vacuum to make it as good as a decent front bottom to top rear would be, but it's better than what you have now.

jack-o-bytes · 12-Jul-2009, 01:59 PM **#11**

ok thnx

dlsayremn · 03:08 PM

Just a wild idea, but any way you could put 4 2" feet on the bottom of the case and mount a 2nd 120mm fan on the bottom.? Initial thought was to have it as intake, blowing up around the MB; but having it exhaust might help a little better. Fan would probably need to be outside the case which is one reason for the feet.

Always thought most case designs were lousy, by not having some kind of a stand-off and allowing air in at the very bottom.

jack-o-bytes · 12-Jul-2009, 04:23 PM **#13**

I dont think I could fit one in the bottem because I have 2 CCLF tubes along the bottem of the case.

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