Hi I have just bought the following iMac config: 3.2GHz Processor 1TB Storage 3.2GHz quad-core Intel Core i5 processor Turbo Boost up to 3.6GHz 8GB (two 4GB) memory, configurable up to 32GB 1TB Fusion Drive1 AMD Radeon R9 M390 with 2GB video memory Retina 5K 5120x2880 P3 display However, the noise coming from it is really bugging me. I also have a MacBook Pro with a SDD which is silent until the fans pump up when needed but this new iMac is constantly making a whooshing sound which is audible when sitting at my desk with no sound in the room. I was told by the Apple salesman that they run silent so I am very disappointed. The fans are running at 1200rpm and I have tried playing around with fan apps to see if it is the fan noise but am guessing it is the HD spinning. Would getting a SSD be quieter or a different config improve the noise? I expected to hear a little noise if I put my ear right up to the screen but not as much as I am getting. Does the HD constantly spin?