View Full Version : Stupid question
Dr DRAM
11-04-2001, 10:40 AM
This might sound like a pritty lame question. but which way should the case fan blow? in or out?
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YODA74
11-04-2001, 10:53 AM
Which direction would I want the fan to blow? The most common places to install extra fans are on the side, top and front of the case. Fans mounted on the top of the case are useful because they help to get rid of the hot air that rises to the top of the case, so these fans are usually blowing air up, out of the case. Fans on the front of the case are used to introduce colder air into the case, which helps to lower the temperature of anything inside the case. Fans mounted on the side are usually placed strategically, to help cool a specific part of the system, the video card, and the CPU are the most common. When people put fans on the side of the case, they need to consider very carefully which direction the air should be pushed. In some cases, you want fresh, cold air being circulated, but other times you just want to pull any hot air that might be trapped, right out of the case.
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BigBlue66
11-04-2001, 01:48 PM
Hey Doc,
One fan in front of case blowing fresh air in, and one in the back of the case, sucking hot air out.
Cheers,
Big Blue 66
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iisbob
11-04-2001, 03:24 PM
No such thing as a stupid question; just improper ones-and this is a proper question.
At the very least have a fan in the rear to pull air out of your system; conversly pulling fresh air into your system from the front vents.
Now i do overclock my video card, and to a small degree my CPU; but i only run a fan in the rear of my system ( not counting the power supply fan, Graphics card fan/HS and CPU fan/Heatsink )-it's a large bladed model running at around 5500rpm. Larger blades equate to less noise and more air volume moved=cooler, less noisy system.
I've used several case fan combo's, and i've seen this single quality fan produce just as good a temperature decline as to faster, smaller blaede ones ( 1>front/1>back ). The key to effective cooling is proper airflow, you can hurt your system's temperature by having to many fans improperly creating an airflow turbulence. You want the air flowing in a smooth arc over your peripherals and the CPU out the case. This is where proper front side ventilation comes into play. I took my case and enlarged the front air bevels; then added a dust filter.
To give you an idea fo my current case temps ( during a full load ) with a 1.1 T-bird( OC'd ) and a Geforce3Ti500 and a 450watt powersupply, my average internal case temp stays around 78* F ( roughly 40* C ) this also applires to my CPU-it hovers around the 75-80* F mark.
So use a little common sense when implacing case fans-and don't buy those cheapo'sfrom Bestbuy or CompUSA.
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iisbob
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rond36
11-06-2001, 03:42 AM
If you need more info on this go Here (http://www.virtual-hideout.net). If you need parts go here (http://www.subzeropc.com/) or here (http://www.theoverclockerzstore.com/).
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