a PS3 but I did have a Xbox 360 which was very loud. I went back to the store I bought it from and exchanged it. The exchanged unit is a lot quieter.
Have you asked this question in the Games & Gear forum? There may be more members with the answer you seek.
I have a PS3 and am very happy with it except for one thing, the fan noise. Whenever I watch a standard or bluray DVD, the fan kicks into high gear within 10 minutes and stays on the whole movie. I have it on a glass TV stand and it is not enclosed, so ventilation is not a problem. Does anyone have similar problems?