This is the correct answer. Often, Intel and AMD actually partners the design to someone else (probably Delta (Electronics, not the airline!), Foxconn, or Nidec

This is the correct answer. Often, Intel and AMD actually partners the design to someone else (probably Delta (Electronics, not the airline!), Foxconn, or Nidec) then the partner knocks down the design for three things a) cheap, b) reliable and c) meets the minimum power dissipation requirements. Acoustic performance is an afterthought if it's even considered (most of the time it isn't).