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I tried swapping the fans around in several places. Oddly enough, the best I've had it was with 4 top fans pushing down and leaving the fans off of the side completely. I have a box fan behind it all, pushing air down the cards.
I should have picked up some better fans, but even with the crazy high velocity box fan pushing down on these cards I still don't see much better than 80 degrees.
I should have picked up some better fans, but even with the crazy high velocity box fan pushing down on these cards I still don't see much better than 80 degrees.
80c is a good temp for 24h mining, those cards can withstand 88c while hashing at full speed.
if you need to keep them at 70c then you have to look at those delta fans
http://m.youtube.com/watch?feature=related&v=Apo_tgrSmps
Delta fan: 5000RPM~7000RPM, 256cfm
your fans: 1500rpm. 60 cfm.
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