Where all 5 cards FE models? And its impressive that in all 5 the whine was gone after fitting a block. I was put off even bothering to consider water block route for my 3080FE, as I figured no point removing the fan noise if all Im going to hear is whine.
Would be great to find the exact components that emit the whine... but cant think of a way of doing that. Sadly no useful internet result either.
Correct, two of my own 3090FE's, Bro with his 3090FE and work colleagues who I helped with custom loop each a 3080. 4 x EK blocks and 1 x Corsair block.
Your not wrong. Was initially my main reservation but case it ended up in needed it to be water blocked which as you say, normally means things are quiter hence any whine would be more pronounced. Fortunately not been the case, but damm did I had a grin after the whine went away after blocking the card


Undervolt helped reduce it a bit. After I re-padded the card, the fans never go above 1100rpm, so its whisper quiet. Rest of my system is too. Means the whine, even in 'reduced' state is the loudest part of the system...