I think it can be summed up in the fact that the iMac is a consumer machine, and the PB is a professional. The specs reflect this ie, FSB 100 to 133, L3 Cache and the video card, t…

The HD in my Ti/500 has been getting progressively louder since I bought it. It seems to have peaked at a noise level that is just short of unbearable- it's only fractionally quiet…