I understand the frustration with air flow through the case, which is why I purchased for my RF case the windowed panel that had the vented insert in it....and then finally got rid of the "exhaust" fan, the one mounted in the box, and moved that exhaust fan to the vent on the side panel. (I noticed that the fan in exhaust barely managed to move any significant amounts of air out of the case, even though I'd drilled out the mesh on the rear of the case......what I really noticed was that the fan bounced more air back into the case from the inside of the box vs. moving the air out the rear....a very poor design, imho. And it worked no better set up as an intake fan, either.)
That single change on that fan's placement did wonders for moving out air.....but then again, I am WC'ing and have three 120's....all S-Flex "F's"....on top blowing into the case along with the front 120 fan (which was changed from the Lian-Li fan to an S-Flex "E" fan), so two 120's (both Zalman F3's) providing exhaust probably is just barely enough.
But, as I sit and wait for my EK blocks for my 3870 cards, the move of that one fan from the box exhaust to the side panel dropped the gpu temps almost 10C......so I guess it is doing a lot of good after all. (Primary gpu temp dropped, on idle, from low 60's to 50-52C....the cards are the Asus 3870's with the heatsink/fan that is NOT vented out the rear of the case.)
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