The Riing fans are pretty low RPM fans at max to being with. When things ramp up, it's more whooshy then tornado. Hard to describe sounds in words. I capped the 3 exhaust fans at 90% using the BIOS, and the 2 upper intakes are using the inline resisters to slow them down, as they're being run through the Fractal AIO fan hub.
It all can get hot when pushed for a long period of time, but no throttling and "least" amount of noise - which is what I wanted to achieve. Could be cooler if I uncorked the fans a bit more, but it'll rarely get pushed that hard (synthetic bench) for that long when used for reals. Sounds like that would work for you too?
Yeah that should work for me. I am going to try to try keep the noise as low as I can without any throttling (which I guess is the goal for most builds!).