Hx650 corsair psu.. LOUD...help?

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johnv466267

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Feb 17, 2016
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Hi guys.
I purchased a hx650 ps second hand. It works fine powering my pc but holy sh#! is it friggen loud.
Has anyone encountered their psu running at full fan speed? Besides returning and rma ing it because im on a budget, is there a way to reduce the fan speed on this?
 
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Some PSUs can't be tightened too tight to the case or the sheet metal bends and causes too much vibration. Check that first, by just undoing the PSU screws by a 1/4 turn. Next, if you want to connect a "resistor" inline with the fan, I'd recommend a variable resistor. Approx. 1/4W @ 100-Ohm. This will allow you to adjust the fan speed. Please note that if it is a thermally adjusted fan, you could cause other issues because the fan won't be responding correctly with the onboard sensors. So if your system shuts down, that's because the heat caused the internal temp sensor to trip.

However, while you're in the PSU, you could also find a better fan to replace the existing one. Many PSU fans are 4 or 5 fin fans. See if you can...
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gity69

gity69

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Feb 16, 2012
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This model claims to have a thermally regulated fan speed. If you are not putting it under load it should be relatively quiet. What is the ambient temperature of the room? It says on the website that it has a seven year warranty perhaps you could RMA it even being that you got it second hand?

Edit: reading a few reviews it seems to have a chirping fan noise issue or the thermal regulator is shoddy and the fan goes max speed all the time, I would definitely look into a return if possible.
 
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johnv466267

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Feb 17, 2016
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Dang. If I RMA it, I'm pretty much losing out on the "deal" i got it for... I'm on a budget atm.
Do you think I could attach a diode in the fan circuit to reduce the fan speed to reduce noise?


 
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gity69

gity69

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Feb 16, 2012
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Certainly but you also run the risk of it overheating and dying for good. If you have the pieces you could easily splice in a fan control switch, however you would need some way of monitoring temperature otherwise it may fry itself. It would be safer to let it run at max. Is it possible to just move the tower further away from where you sit? I am also greatly irritated by fan noise so I can empathize.
 
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johnv466267

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Feb 17, 2016
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Unfortunately, I can't and I was planning to put the tower on the desk away from the carpet in my bedroom. It's ridiculously loud. I've never heard a pc this loud except on a 15 year old dell trying to open up autocad at work.

I have the pieces but I would feel more comfortable knowing that a few more members has tried splicing and their pc's are still running and not in flames.

Yeah, definitely too good to be true. $40 modular psu off craigslist -_-

btw. thanks for leaving input on my questions
 
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Doramius

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Mar 24, 2013
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Some PSUs can't be tightened too tight to the case or the sheet metal bends and causes too much vibration. Check that first, by just undoing the PSU screws by a 1/4 turn. Next, if you want to connect a "resistor" inline with the fan, I'd recommend a variable resistor. Approx. 1/4W @ 100-Ohm. This will allow you to adjust the fan speed. Please note that if it is a thermally adjusted fan, you could cause other issues because the fan won't be responding correctly with the onboard sensors. So if your system shuts down, that's because the heat caused the internal temp sensor to trip.

However, while you're in the PSU, you could also find a better fan to replace the existing one. Many PSU fans are 4 or 5 fin fans. See if you can find a fan with more fins. a 10 fin fan moves more air at slower speeds, and thus would be a bit quieter. Used in conjunction with a variable resistor, you can have more control over the thermal transfer and sound of your PSU.
 
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