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Fan questions...simple ones,but I don't know the anwswer.

B

Bizuca

Member
I never try to put any fan yet on my computer,but now I guess I need a couple,I have a few questions for you guys.

1- Do I always need to cut a hole to install a fan on the side of the case ? Or just for exhaut fans?

2- I want to install a intake and exhaust fan right in front of the memory bay.I don't have any other empty place inside my case.

3- How many fans are necessary for proper cooling ( Using a P4 1.5 GHZ )I got now only a VidCard fan and another one in the back of the PC,blowing air towards the back.

4-What about fan size,bigger always better ?


Thanks for all responses



 
I'm thinking one 80mm exhaust fan in back is always a good start. Does your case have a vacant hole in back, below the power supply unit? Does it look similar to this one? If so, just pick up a 80mm fan and a couple of fan screws (these are coarse-thread screws with Phillips heads) and that's a good start.

If you want to take it further, keep in mind that you can get a case fan WITH a well-ventilated case for $56 shipped and just put your existing power supply in it. This particular case has a holder for an 80mm fan right inside the hard drive holder to keep the hard drive cooled off. It's also very easy to work with. Click on "See It!" for some photos. The purpley-blue plastic things hold the fans.

Or you could get feisty with your existing case and cut some ventilation holes in it. Putting in a side intake and a top exhaust is a popular setup. This doesn't really catch your hard drives directly in the flow, however. If you take this route, you could try using a hole saw, or an electric jigsaw with a fine-toothed blade, or a Dremel with fiberglass-reinforced cutting wheels. Always wear eye protection with any of those tools or you might pay a very high price.

When shopping for fans you have to pick something that gives good flowrate but doesn't drive you crazy with the noise level. There are some adjustable-speed fans like this one which would leave the noise/output level up to you.

Sizewise, the 80mm are common. If you're going to cut holes, some of the quiet-running 92mm fans or the quietest 120mm fans could be good picks also. The smaller the fan, the faster it generally runs and the higher the pitch. Fast 60mm fans sound like a hair dryer, for instance, while a 120mm fan moving the same amount of air runs with a quiet whoosh.
 
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