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RM550x Zero Fan Mode


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Yesterday i build a new PC (i5 6600, bequiet Pure Rock, ASUS B150 PRO GAMING, HyperX fury 16gb 2133 DDR4, Sapphire R3 390).

With the RM550x as a PSU.

In Idle the System consume 80W.

Under 225W the PSU should run in the ZERO Fan Mode and should be completely silent(https://www.links.co.jp/wp-content/uploads/2015/11/RM550x_NOISE_WEB_082015_m.jpg) .

But it is louder than the rest of the fans in the case.

So my question is, is it normal?

Shich cause could it have, and can i fix it or should I exchange it at shop?

The last question is: Can i test the rest of the system or could it damage other components, like the CPU or the videocard?



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It is very very unlikely that the PSu will damage the motherboard or CPU of another system. I would suggest trying with a different system to see if you're getting the same issue.


Try using the PSU in another outlet also without any other electrical components attached.

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