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Upper front intake weirdness

post #1 of 5
Thread Starter 
In an attempt to test different airflow scenarios, I removed the top three 5 1/4 bay covers, creating a square hole into the case, and just placed an 80mm low-rpm fan in the opening, standing freely. This lowered my CPU idle temps to 32*C. Great, I thought, and went and bought a 'fan box' that's designed to go in those 3 bay areas, put a 120mm fan in it and mounted it.
To my surprise, the temp is now 2*C higher than with the hole+80mm fan.

Does anyone have any theories about this?
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My System
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CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.3 GHz Asus P8Z77-V PRO Asus GTX 680 2Gb 4x8Gb Corsair Dominator 1600MHz 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 3 120Gb OCZ Agility 3 240 Gb WD Caviar Black 1Tb OCZ Vertex 2 90Gb 
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Corsair H100 Ubuntu 12.04 Yamakasi Catleap 27" 2560x1440 @103 Hz Filco Majestouch (brown switch) 
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Corsair AX850 Corsair 650D Zowie EC1 Steelpad 4D 
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post #2 of 5
Maybe your room temperature has changed, simply...
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post #3 of 5
Volume, direction and flow ballance effects the overall temps. More is not always better especially due to the location of the added air flow.
    
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post #4 of 5
How many fans do you have acting as an outtake ? If only one 80mm, then that extra 120 is just a waste of resources...
ThinkPad R61
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post #5 of 5
Maybe now you have too much intake and not enough exhaust? Bringin in ~30 more CFM isn't always better, it might disturb the rest of the case's airflow
Kopisaurus
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Kopisaurus
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