Mine's very quiet. Antec P183 case, all Scythe SlipStream 120mm fans. All fans mounted on anti-vibration rubber mounts, same for HD/Optical drives. SSD for main OS. Aftermarket (Scythe Mugen something or other) heatsink+fan for CPU, GPU fan is from Arctic, not sure the exact model off the top of my head. CPU: Intel Core i7 4770k GPU: ATI Radeon R9 290x RAM: 32GB, Corsair. Too lazy to look up the timings. MB: Asus Maximus 7 Hero. I live across the street from a gas station, and the sound of their HVAC system is louder through closed windows than my PC 1m away at idle. Under heavy load it becomes audible, but I use headphones which serve to mitigate that quite well.