ZAPPA'S 3Dfx CoolBox
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| These heatsinks cost only .19¢ a piece and had thermal adhesive tape on the back. They are 1 1/16" square, which fit perfectly on the processors. The inner processor (the one closest to you in the picture) is slightly larger by a 1/16" so I just centered it. | |||||||||
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| The box was made with plastic from a hobby store and I used the blank from the PCI slot and cut an opening in it for air intake, then used epoxy to attach it to the box. I sealed the box down with silicone, but a bottom can be put on so it could be mounted in any slot. The fan is powered off the cable for the hard drives, it has a pass through connector so you don't loose a plug in. | |||||||||
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Every other set up I've seen has just a fan inside, and what happens here is it get very hot in there with the cover on. Thats why I built the box so I could have a constant supply of cooler outside air coming in. Does it make a difference? You bet it does! In running my tests I noticed the tempeture of the processors/heatsinks rise in conjunction to the rooms tempeture, (makes sense) and when your talking about maybe 20° or more difference in the room tempeture to inside your computer after hours of it running, thats a big difference! Either way my 3Dfx card runs cooler over clocked to 63MHz with this set up then running at the defalt (50MHz) with no fan. Check out my test results here to see what I mean.
Specs on the fan I used (cost was $9.99):
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