Will it make sense to reverse my rear exhaust fan into an intake fan to improve cooling?

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himmatsj

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Feb 23, 2014
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This is what I have currently (a pre-built Dell Inspiron 660 casing):

Front/side/back: http://i.stack.imgur.com/QalLB.jpg (there is no fan at the back of the PSU like in this image though, PSU fan is inside the casing, see below)

Inside: http://i.stack.imgur.com/2FFrh.jpg

Would it at all be better if I were to reverse the direction of the exhaust fan, such that it now becomes an intake fan? Do you foresee better cooling for my components with this tweak?

Also, what are the dangers of doing this, and what is the potential downside?

Thanks!

 
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Joeyob32
That's exactly what I did last week, blowing cold air onto the VRMs and towards the CPU. It dropped my temps across the board (pun intended) by about 5 degrees celsius. Note though that my case had a 20cm top exhaust fan, and I reversed the front intake to an exhaust too, so my case was perfect. Might not be suitable in your case. (pun intended again)
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Barty1884

Barty1884

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It's not a good idea. If you only have a single fan, it should be an exhaust.

If you don't have an exhaust fan, the hot air within the case has no way of being removed at any great speed. You're relying on "hot air rises" and hoping you have vents on top for it to escape though.

In addition, if all you have is an intake (and no exhaust), there's nowhere for that quantity of air to go fast enough, creating back pressure against the fan.
 
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himmatsj

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Do you have any suggestions as to how I can get air to my GPU? Because I can understand the side panel providing fresh air for the CPU, but the GPU is located below the panel. My GPU temps hit 80C when under maximum load. I would like it to run just a bit cooler.
 
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himmatsj

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How would I go about adding a fan for intake exactly? Attach it to the grills where the HDD currently is located? Would this work, even though there is a bezel up front (though there is a small intake slot at the bottom of the front of the PC, so air can possibly be sucked in from here).

Also, for this to work, would I have to remove my HDD or can I leave it as it is?

And seriously, would adding in a case fan improve matters at all in the first place for me (theoretically speaking)?
 
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Joeyob32

Joeyob32

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Mar 28, 2013
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That's exactly what I did last week, blowing cold air onto the VRMs and towards the CPU. It dropped my temps across the board (pun intended) by about 5 degrees celsius. Note though that my case had a 20cm top exhaust fan, and I reversed the front intake to an exhaust too, so my case was perfect. Might not be suitable in your case. (pun intended again)
 
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