Which raises the question: which is the best iMac of them all? It would be easy to simply say that it's the M4 iMac, since it's the most powerful model to date, but can you really ...

That means there were three years between when Apple introduced the white plastic iMac G5 and the aluminum iMac in 2007 – a pretty quick turnaround time for a major redesign of a Mac.

The G5 processor was designed was to be put into multi-processor machines, which Apple sold at the upper end of its product range. In practice, these numbers meant that the Power Mac G5 ran circles ...