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CM690. 5 120mm intake and 0 exhaust?

post #1 of 13
Thread Starter 
Would this work? Just have 5 120mm fans forcing cold air in, two in the front, 2 in the side and one in the bottom, and let the hot air seep out any of the many many vents the cm 690 has (out the top, or back).

Im thinking it could go two ways
1. It works great, and simply as more air is blown in, more naturally comes out the top side of the case, (which is all just air vent, right along the top)and is blown out the back by my cpu cooler
2. It just becomes a big clogged up mess of hot air.

Would it work?
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post #2 of 13
It would be inadvisable - generally, you want a balanced intake/exhaust with maybe a bit more exhaust... at the very least, you definitely want an exhaust fan on the rear to insure that the CPU's heat is properly removed from the case

Also, a large volume of air being pumped into the system without being circulated out will turn your computer into a dust filter for your room
post #3 of 13
Quote:
Originally Posted by killa_concept View Post
It would be inadvisable - generally, you want a balanced intake/exhaust with maybe a bit more exhaust... at the very least, you definitely want an exhaust fan on the rear to insure that the CPU's heat is properly removed from the case

Also, a large volume of air being pumped into the system without being circulated out will turn your computer into a dust filter for your room
on the +side you wont need to buy one of those magnetic dust trappers on tv for your room ^_^
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post #4 of 13
Thread Starter 
Quote:
Originally Posted by wildfire99 View Post
on the +side you wont need to buy one of those magnetic dust trappers on tv for your room ^_^

lol. Theres a saving right there, which i can put toward a new monitor!

So should i have fans coming in at the bottom and front at all then? Or just in the sides?
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post #5 of 13
Quote:
Originally Posted by brownbox View Post
lol. Theres a saving right there, which i can put toward a new monitor!

So should i have fans coming in at the bottom and front at all then? Or just in the sides?
The best way IMO would be to have the front fans as intake and the side/rear as exhaust. This will usually give you the best circulation and wont end up in you having a big clogged mess.
post #6 of 13
front = intake
bottom = intake (if it's elevated and not on a carpet)
rear = exhaust
top = exhaust
sides = disrupts airflow - leave open or set to exhaust
Edited by killa_concept - 6/7/08 at 11:18pm
post #7 of 13
i think it would work tbh m8, but im not sure how well.

i have 4 in 2 out and my temps are great. well 3 in and 1 half ish, its cable tied to the back of the bottom 3 dvd drives blowing onto my ram but its sucking thru the front so... and my 2 outs are in the roof sucking thru my cpu heatsink but i have my psu upside down so its sucking out from the case and my gpu is aswell.

i have 2 front 1 bottom 1 side in and 2 roof out with nothing on the rear other than my psu/gpu and my temps are preety dam good if i say so myself. i have a fan on my nb heatsink blowing up into my cpu heatsink which is also blowing up out thru the roof fans. i tried fron to back and bottom to top and found this was bets for my setup.

best thing to do is test, go with 3 in and 2 out and see where they work best for you.
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post #8 of 13
yea just make sure you have all your fans on the side going the same direction or the air inside of your case is going to just going in circles.
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post #9 of 13
i would not advise you do that. in general you only want a little more intake than exhaust. if you really want to run intake that bad, id suggest you at least make 1 exhaust at the rear of the case. all you are doing when making them all intake is stressing all the motors to work harder for less output. they are pushing air into the case with the air nowhere to go, creating lots of positive pressure.

positive pressure is good, but you need exhaust.
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post #10 of 13
and also you must note that cm690 has hard drive cage rotated, so that it blocks airflow from front fan in a certain way...
    
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