BeQuiet 1000 W Dark Pro 11 Power Supply. This unit has never had any coil whine in my experience using it (with a R 3900x + RTX 3070, so decent power draw).
Please feel free to ask questions. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\Power Supplies". The seller is "jasaw32" and is located in this country: GB. This item can be shipped to United Kingdom.