what fan do you get? Pop the top cover off, if it have 12 segments (the one circling the center of the fan, before the blades), its DELTA and its the loud one. Replace it with a Nidec (8 segments). If you already have nidec... i have no idea how can it still be loud. Did you also replaced the thermal pads?I replaced the stock thermal paste on my Pro with liquid metal and cut an intake hole in the top cover above the fan. It made a noticable difference but it's still loud as hell. I don't play it much anymore or I would have probably added a 120-140mm fan to the other side. The stock heatsink is a joke. I'm not paying retail for a PS5 unless the cooling solution is solid. I hope the XBX shape rubs off on them.
do we have a thread talking about making PS4 (and pro) quiet?