Gigabyte Windforce OC 5090 - grinding noise when fans stop (0 RPM)

Hi,

I've just bought this GPU after weeks of trying to find any RTX 5090 in stock. A quick question to all 5 owners of this GPU - do any of you hear a grinding sound when the fans turn off? There's a strange grinding sound on mine when temperatures are low enough for the fans to come to a stop (0 RPM) and I'm quite bothered by it.

Also, does anyone consider their Windforce OC loud? The fan noise coming from mine gets pretty annoying when fan speed exceeds 60%. And by fan noise I do mean fan noise, not the sound of air rushing through the fin stack which I can tolerate just fine. It's some kind of buzzing that can be heard. Anyone else have this on their sample?

Additionally, the fans don't seem to be tuned correctly. They ramp up to 70% (~2100 RPM) when the GPU temperature is just 70*C. 70*C should be well in the comfort zone, shouldn't it? My MSI Suprim 3090's fans don't ramp up that high until the GPU temperature is well into the 80s. Are vendors just overcompensating because of the removed hotspot reading in the RTX 50 series and they want to be sure that the hotspot, even though not readable any more, is in check? Not sure, but I would have been much happier if the fan curve wasn't that aggressive, if possible.

I'm kind of regretting getting this particular model now, but it was the only one that I found in stock. :( Are all Windforce OC models like this or is my sample just defective? Having paid the honestly insane price of $3200 I expected everything to be top notch.