I can't believe something so small can make so much noise. It sounds like a red line car constantly changing gears. It's audible over everything, to such an extent that it's difficult to hear a normal TV volume over it. As if they found a fan with bad bearings and slapped the blades with a piece of wire. To be fair, when the Xbox is off or in sleep mode, it gets quieter. It gets even quieter when I put it back in the box and send it back.