Thermaltake DuOrb VGA Cooler Review
 

With ambient temperature somewhere around 26c on both days
that we took results from, you can clearly see the Thermaltake clearly
exceeds the stock cooler, at first I was worried when I saw the idle
temps were almost identical, but under load well a whole 19c
difference on the 8800GTX and in my eyes that makes this pretty
special.

http://www.xtremecomputing.co.uk/review.php?id=380