How loud is the whine exactly?

Im preparing for the worst.. how bad is the whine that you guys experience? Would it be enough to get kicked out of class? I won't have time to send this one back once it gets here because school is starting and I need it for my digital media class.

The loudness varies. Many users can hear the whine when sitting at a normal arms-length typing distance from their notebook. For others, the whine is much louder and can be heard several yards away.
It may be enough for a prof to ask you to shut down the machine, if the room is small and the prof has sensitive ears. I take a lot of classes in small conference rooms that seat ~15 people. Some of my profs would tease me for the whine, but never asked me to shut my MBPRO off. It was definitely much quieter than, for example, a Dell P4 notebook with the fans cranking full blast. The high-pitched nature of the noise may be especially irritating to some people, thougn.
Anyway, if you are worried about your MBPRO getting kicked out of class then there are several workarounds you could use in that setting. You could use the PhotoBooth workaround, or possibly the Mirror Widget workaround. Another option is to install Apple Developer Tools and run the CHUD tools. In CHUD there is an option to disable one of the processor's cores, which kills the whine. The downside to these workarounds is that you lose processor performance and battery life

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