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post #1 of 34 (permalink) Old 01-26-2019, 08:45 AM - Thread Starter
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Seasonic SS-1000XP loud?

So I have a 1000W Seasonic powering a Ryzen 2700x and a AMD 290, plus a couple of SSD's. Now, I just replaced all my fans, so I have two Noctua NF-A14's in the front, and two NF-A15's on my Noctua D15. My GPU is running fans at the lowest speed when idle, however my case still has an audible hum to it. I've found that it is my PSU that keeps spinning up the fan, even though it is set to hybrid, I thought it would be controlled by the power usage, so it would be running completely off when my system is idle? My case fans and CPU fans are running at their lowest speed as well. My case is a NZXT H500, in which I removed all the stock fans.

I am considering buying a fanless PSU if this is normal behavior for my PSU.

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post #2 of 34 (permalink) Old 01-26-2019, 08:51 AM
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Its not normal and its defective
Why did you buy a 1000 watt PSU for a system that does not even draw half that?

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post #3 of 34 (permalink) Old 01-26-2019, 09:08 AM
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Quote: Originally Posted by shilka View Post
Its not normal and its defective
Why did you buy a 1000 watt PSU for a system that does not even draw half that?
I did something like this too, did I mess up?

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post #4 of 34 (permalink) Old 01-26-2019, 09:19 AM
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theres no problem with excessively high wattage PSUs so long as it's one of the good models, it just means you've overspent on something pointless.

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post #5 of 34 (permalink) Old 01-26-2019, 09:58 AM - Thread Starter
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Quote: Originally Posted by shilka View Post
Its not normal and its defective
Why did you buy a 1000 watt PSU for a system that does not even draw half that?
Because I bought it back when running SLI Fermi and a dual Xeon setup? I've uploaded a video with the noise here:

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post #6 of 34 (permalink) Old 01-26-2019, 10:01 AM
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On some models it also means the fan will almost never spin because it hasn't crossed a power threshold that requires the fan to move, and that could be worth the price bump for some. Then again, the P2 1200w I had was in eco mode it's whole life and it broke after 2 years...not using that mode again.

Here's what I got:
Check psu orientation. If you're on carpet, you could be choking the fan if it's facing down. Raising your case or flipping the unit around should help if that's what's happening.
Monitor voltages in bios/multimeter to see if everything's in spec (Usually +/- 5%, and you shouldn't see any rapid fluctuations).
Blow dust out, if any.
Run in normal mode and see what happens.
Monitor power usage with killawat.

When in hybrid mode, the fan should be off when utilizing less than 30% power capability. At 30-50%, it should be in silent mode which is 16dba, and above that it'll ramp up the fan to more audible levels as power consumption increases. In normal mode, instead of running passively at 0-30%, it'll run in silent mode (16dba), which shouldn't be audible unless you have a super low noise floor in your room or if you got noisy bearings.

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post #7 of 34 (permalink) Old 01-26-2019, 10:12 AM
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Just asking but you are sure you have it in hybrid mode right?

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WD Ultrastar DC HC530 14 TB
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post #8 of 34 (permalink) Old 01-26-2019, 10:13 AM - Thread Starter
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Quote: Originally Posted by shilka View Post
Its not normal and its defective
Why did you buy a 1000 watt PSU for a system that does not even draw half that?
Quote: Originally Posted by airisom2 View Post
On some models it also means the fan will almost never spin because it hasn't crossed a power threshold that requires the fan to move, and that could be worth the price bump for some. Then again, the P2 1200w I had was in eco mode it's whole life and it broke after 2 years...not using that mode again.

Here's what I got:
Check psu orientation. If you're on carpet, you could be choking the fan if it's facing down. Raising your case or flipping the unit around should help if that's what's happening.
Monitor voltages in bios/multimeter to see if everything's in spec (Usually +/- 5%, and you shouldn't see any rapid fluctuations).
Blow dust out, if any.
Run in normal mode and see what happens.
Killawatt

When in hybrid mode, the fan should be off when utilizing less than 30% power capability. At 30-50%, it should be in silent mode which is 16dba, and above that it'll ramp up the fan to more audible levels as power consumption increases. In normal mode, instead of running passively at 0-30%, it'll run in silent mode (16dba), which shouldn't be audible unless you have a super low noise floor in your room or if you got noisy bearings. If everything checks out, then your unit likely needs to be RMA'd.

Thanks! My PC is on a wooden floor, and is installed with the fan down, drawing air from the outside. I will try to run it in normal mode later, but that would only make it run louder I guess. If you see my video above you can hear it. I was recording with a good microphone so it isn't some static noise, but the actually noise coming from the PSU.

// Ryzen 2700X 4GHz // GSkill 16GB F4-3600 // 256GB 970 Evo NVME // Gigabyte 2080 Gaming OC White // NZXT H500i //
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post #9 of 34 (permalink) Old 01-26-2019, 10:14 AM - Thread Starter
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Quote: Originally Posted by shilka View Post
Just asking but you are sure you have it in hybrid mode right?
Yes I am. I will try to flip it to normal in a moment and report back.

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post #10 of 34 (permalink) Old 01-26-2019, 10:29 AM
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Quote: Originally Posted by epic1337 View Post
theres no problem with excessively high wattage PSUs so long as it's one of the good models, it just means you've overspent on something pointless.
For me I wanted the computer to be inaudible from 3 ft away regardless of what I was doing

When I had PSUs closer to my wattage they would get very loud during gaming (sometimes audible from 15+ feet away) so I felt the extra 100 or so was well worth it

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