I'm assuming you mean the fan?

I'd talk to Quiet PC myself, my one from them seems to be a very cool
performer and the fan hardly needs to rotate at all. Strange as in my
experience its the cpu fan which is noisy.

Maybe in your psu it is the fan you need.
Brian

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"pinnerite" wrote in message
news:20210429164030.0c10c6a835a418bf46e8073e@gmail .com...
The power supply in my home build low profile HTPC has become very noisy.

It is a Zalman ZM500-GT 500W and very good until recently.

I want to replace it with a low noise job but do not want to spend more
than I need to. Very few of those advertised on the Internet quote how
many dbs to expect.

Does anyone have any knowledge of what might be a good choice?

TIA
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