Hi guys, I have been a long term user of Macbook Pro and I am super happy about how dead silent those computers are. I cannot hear a single thing out of my 2015 macbook pro. Recently I purchase a brand new 2019 27inch iMac. It is the base model configured with 512g SSD. I find out there is a constant level of noise mixed with fan and some buzzing/clicking sound as long as I turn it on. Then I did a replacement, but the replacement has the same issue and noise is even louder. The buzzing/clicking noise is something that worries me. It sounds like some coil whine on mainboard or power unit. Neither my PC or macbook pro have that. Do you guys have the same experience with your iMac? I do not know if I should downgrade to a 21.5 inch iMac or just have another replacement if this issue is real.