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Old March 6, 2012, 06:32 AM
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would it be okay to replace the psu fan with a quieter one? im planning on a silent build.
i am going to use a corsair tx550m and replace it with a noctua ulna 500rpm
i know it sounds ridiculous but what do you guys think?

the psu probably will never be at 100% load. i5 and 7770.
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Old March 6, 2012, 06:34 AM
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or if not, what is the quietest 500ish watt psu i can get for about 70 bucks?
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Old March 6, 2012, 06:47 AM
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why? I have a tx850 and the thing is silent already
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Old March 6, 2012, 07:02 AM
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ohhh is it?
my system is going to be so quiet that the only sound will be from the psu.
all noctuas at 500rpm and ssd

well i guess if that's the case, then ill stick with the stock fan.
hmm
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Old March 6, 2012, 08:04 AM
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The big concern I would have about limiting the PSU fan to such a low RPM is it may not get the air flow it needs under a heavy load and you could damage the PSU.

My Corsair AX850 fan doesn't even run when my PC is just idle. Once it gets to around 50% load or so, then the fan starts to rev up. IIRC, alot of the 80 Plus Gold/Platinum PSUs are like this...since they are so efficient, there's very little waste heat.

I'm not sure if you'll be able to get one on your budget, but if you want to keep things really quiet, it might be worth looking for a PSU with a fan that works similar to the AX850 I have. :)
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Old March 6, 2012, 10:30 AM
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Look for a PSU with hybrid fan design, aka semi-passive. The fan does not kick on until the PSU reaches a certain load point. I generally suggest jonnyguru.com for the most comprehensive PSU reviews.
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Old March 6, 2012, 02:36 PM
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I decided to go with the ax650 instead. peace
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