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Tried this experiment the other day with mixed results. Two 110 cfm fans on GTX 280's. I improved on most bench's with a 8600/790i Ultra combo, but the card in slot #1 still got pretty hot. Most likely because of the thickness of the fans...as you can see it butts right against the adjacent card.

http://i434.photobucket.com/albums/q...9/DSC00163.jpg

Are those tornado fans?
I never realized that there was that much room between the 2 cards.

You should rig up an air duct for the top card, and have the fan parallel to the motherboard. Pretty sweet mod though.

Yeah you might try smaller width fans see if you don't get better results.

Quote:

Originally Posted by Outlaw (Post 11255)

Are those tornado fans?
I never realized that there was that much room between the 2 cards.

If I'm correct, 780i was one of the boards with really nice PCI-E spacing, so I'm assuming theres another slot in between there.

Quote:

Originally Posted by Outlaw (Post 11255)

Are those tornado fans?
I never realized that there was that much room between the 2 cards.

Yes, those are Vantec Tonado's. Very thick fan too.

Quote:

Originally Posted by Gunslinger (Post 11259)

You should rig up an air duct for the top card, and have the fan parallel to the motherboard. Pretty sweet mod though.

.

I agree...the fans are just too thick to work well in that configuration.

Quote:

Originally Posted by filmbot (Post 11279)

If I'm correct, 780i was one of the boards with really nice PCI-E spacing, so I'm assuming theres another slot in between there.

Yes, there is another slot in between the two. That pic is of a 790i Ultra SLI mb.

Quote:

Originally Posted by DrNip (Post 11274)

Yeah you might try smaller width fans see if you don't get better results.

Yep Nip - I will be doing just that in the near future. :)

Haha, missed this one, nice bully mod bro ;)