Since i replaced my front fans, there is a trade off. They are quieter but they don't run as fast. So even though its -5c outside, my CPU cores aren't as low now as they were a few weeks back. I can''t hear them now so that is the upside.
Another upside to them is unlike my last fans, they have a zero rpm mode so in theory I could just have them turn off if PC got really cold, but its more useful to be able to run them slower. Last fans minimum speed was 350 and they really didn't like any speed over 400. Kind of pointless.
I have matched my two bottom fans to the
PCH since its actually the hottest thing in my PC at the moment - apart from CPU but its got the attention of my front fans and the cooler.
PCH is right over their location and conveniently, so is my GPU and nvme. So it keeps those parts cool
PC not exactly hot right now.
So I have a winter profile set up, I can't hear the PC... need to wait 6 months to make a summer one now.