Well, After weeks and weeks I decided to replace my aging 2008 iMac core 2 duo 3.06 with a new thunderbolt display and a macbook pro. After using it today I am less than satisfied. Not so much with the speed, but the fan noise. I know fan noise if very subjective, but its just too loud. I can understand if I started a handbrake session, but all I am doing it browsing, some youtube and I watch tv from and eyetv box. This is all stuff I do with my current iMac and I don't hear any noise at all. So, is the iMac much better at suppressing all the noise or if I trade out this setup for a new iMac, will it be just as noisy doing these kind of things. Thanks for the input.