CPU is the hottiest component in the computer. Best way to get your case cooler is to conduct hot air out of it.
For this project I only needed:
My knife and some foam from old HDD box.
First I taked off older fan from back of my case. And cutted the foam in right shape.
New duct installed.
The thing way I use two fans in same cooler is that they are different ones. My Opteron is rated with TDP 110W on full speed and that is a lot. Both fans are blowing right to left and they speeds are 1200rpm on left and 800rpm on right. In idle right one is not running and left one is going something like 500rpm. Bigger the load is faster fans are blowing. Att full load faster fan is going <900rpm.
Edit on project: There was question that is second fan necessary. So I did do some testing.
I did change blowing from in -> out to out -> in. It did lower down couple of dec, but it didn't do anything on rpm's. on idle mode. On load thou rpm's drop just about 50rounds. When I toked right fan out of my case, the reaction was more than I suspected. Idle temps get up for 5Â°C and load rotations bounced to little less than 1200rpm. The fan was on full speed!
Here is pic from desktop on full load with 2 fans blowing out -> in. Fan rpms are from faster fan.
Funny thing is that Everest takes Suoritin (CPU) temp from... don't know and the Aux is the real CPU temp. I use Orthos for loadin CPU 'cos it can load both cores (unlike CPUBurn).
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