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Old 08-14-2009
lixuelai lixuelai is offline
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Default Use lower CFM fan...suicide?

Hi, I have a Silverstone Zeus 750w powering a Q9450 @ 3.4GHz (1.18v) on a P5Q Deluxe, 8GB, GTX 260 and 2 HDDs (1 a Velociraptor), 3 fans and some USB devices.

I am trying to lessen the noise of the PC. The Zeus has a Sanyo Denki 80mm 42CFM fan. The fan is rather noisy though and is the single loudest thing in my case. I am thinking of either ditching the Zeus or replacing the fan. I would rather keep it as it has served me well and works fine other than the noise. Anyway the fan I am looking at is a Scythe S-FLEX SFF80C which pumps out 29CFM.

http://www.newegg.com/Product/Produc...82E16835185120

What I am wondering is how bad would the lower CFM be for the PSU. My rig is moderately overclocked and I estimate at most 400 watt load, probably much less than that. The room I use it in is temperature controlled (its a college dorm). IMO the the 42CFM fan would need to cool the Zeus at worst conditions and I obviously is not close to that. So would a 29CFM fan work out or am I just fooling myself and that I should just get a new PSU? Thanks.
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Old 08-14-2009
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The chassis fan lacks not only the CFM. Components in PSU creates some air flow impedance, which means the fan needs to provide sufficient air flow with a certain static pressure.
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Old 08-15-2009
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p4l1ndr0m3 p4l1ndr0m3 is offline
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This is why you should get a PSU with a 120mm fan.
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Old 08-15-2009
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MrWicked1968 MrWicked1968 is offline
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Quote:
Originally Posted by p4l1ndr0m3 View Post
This is why you should get a PSU with a 120mm fan.
don't let Jedi Yoda hear you say that. For those of you who don't know what that is, he was, at one time, the resident propagandist for everything PC Power and Cooling.


and on a side note, Firefox's built-in spellchecker didn't highlight "Jedi" or "Yoda".
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Old 08-15-2009
lixuelai lixuelai is offline
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I had my Zeus for awhile. Back when I bought it it was one of the top PSUs so I did not think too much about noise.

Anyway I bought a Corsair TX750 for $80. Some say it is quiet some say it is not. I guess Ill find out.

Also anyone know how the Silencer 750w compares to the Zeus in terms of noise? My roommate is interested in swapping with me as he thinks the Zeus is a bit better and I think the Silencer would be easier to get rid of. Thanks again.
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Old 08-15-2009
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My modular cooler master is silent. As is the rest of my computer case. It kind of happened that way, unintentionally. When putting together this build, I took old 120mm fans I had laying around apart, lubed them, de-haired them, etc. I have 2-220mm and 7-120mm fans including my PSU and CPU cooler.
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Old 08-15-2009
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Oh and my case is a cooler master HAF 922.
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