PCGamesHardware.de had a chance to speak with id programmer Jan Paul van Waveren about AMDs upcoming triple core CPUs, & optimizing game code.

"Exploiting task parallelism can be very effective. However, it is not always easy to identify different tasks that take up similar amounts of time such that all cores are tasked equally. Furthermore, it typically requires a lot of programmer time to cleanly separate the task such that they can run in parallel."