Improving the stock 8800 cooler.

sno.lcn · Aug 15, 2007

This was console's idea but I figured I'd share since I did it on mine with excellent results. It's also mentioned in this thread.

What he did on his 8800 GTS was take the black cover off (4 small screws, one in each corner) and blow a fan directly into the cooling fins & heatpipe. He used a 92mm fan & I believe zip ties, I used an 80mm fan and screws.

The core temp while playing 3dmark 05 @ 660/1020 went down from 61C to 54C. I also put some IC Diamond so that probably helped a little too. I didn't plug the original fan back in since I figured it'll just blow air around my case but I'll see if it somehow helps later. I don't remember if console plugged his in or not. Anyway here's some pics.

jason4207 · Aug 15, 2007

Nice mod! I may have to try it once I get up and running.

Mpegger · Aug 16, 2007

Try to mount only the part of the shroud that is over the blower, to direct the air through the fins and out the rear of the case. I would guess, that the 80mm is doing most of the cooling, but is just blowing the air all over the place. Using the centrifugal blower sould help direct all that air in the correct direction.

Hipcrostino · Aug 16, 2007

I also did this exact mod, except with a 92mm Delta rated at 110CFM. Running at full speed, i found absolutly no change in load temps over the stock cooler. Idle was better off though. I came to the conclusion that the stock 8800GTS cooler is maxed out from the factory. the heatpipes are at the limit of the heat they can move. As a result of my findings (i ran with the fan for 2 weeks) i have returned the cooler back to stock. Keep in mind that i run a TFB1212GHE 220CFM delta fan on my big typhoon, so noise wasn't a concern, i couldn't even hear the 92mm.

Tstanfill · Aug 16, 2007

i might try this on my EVGA 8800GTX Superclocked

Kai_Force · Aug 16, 2007

Does the memory still stay cool?

Moto7451 · Aug 16, 2007

So long as it's touching the base of the heatsink, yes.

Drinkyoghurt · Aug 16, 2007

i did that mod 1 week ago and it only raised my temps(and made games stutter and freeze)

although i hadn't shutoff the original fan

miggs78 · Aug 16, 2007

Thats seems like a nice mod... :attn:

Kool thanks for sharing :thup:

nd4spdbh2 · Aug 16, 2007

... did almost the same thing a long while ago w/ eh results

http://www.ocforums.com/showthread.php?t=491928

GerrFel · Aug 17, 2007

Would there be any way to replace the stock fan on the left side of the picture with am 80mm fan blowing AWAY from the card? In my mind, that would cause the airflow from the existing 80mm to circulate over, up, and away from the card.

sno.lcn · Aug 17, 2007

GerrFel said:
Would there be any way to replace the stock fan on the left side of the picture with am 80mm fan blowing AWAY from the card? In my mind, that would cause the airflow from the existing 80mm to circulate over, up, and away from the card.

I was going to put another fan there but I couldn't find anything to mount it to.

As soon as I move into my dorm tomorrow I'll start playing with it some more, I know there's a really awesome way to do it but I can't figure it out yet. I have some good ideas but we'll see. I was going to cut the 80mm square out of the stock cooler for the fan but I would only be able to mount half of it since I don't see the other half staying intact. Plus there might be a slight airflow conflict. Maybe if I drill holes through the cooling fins so the air has more place to go from the 80mm? I would just buy a thermalright but that kinda takes all the fun out of it

Improving the stock 8800 cooler.

sno.lcn

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jason4207

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Mpegger

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Hipcrostino

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Tstanfill

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Kai_Force

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Moto7451

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Drinkyoghurt

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nd4spdbh2

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GerrFel

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sno.lcn

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