ID software has released an update for Quake 4 (still in beta for Windows and Linux). The software now utilises both processors in dual processor machines. The gain in performance is said to be between 25% and 75%.
Now that Intel and AMD invested in multi-core processors, this evolution will tend to spread.
There already was a slightly optimised dual processor version of Quake 3 for the Mac. It was not completely thorough, though, as it only used the additional processor for the management of the sound, leaving the rest for the other processor.
Let's hope that Quake 4 for the Mac will also be optimized for dual processors, since the number of Macs with at least two processors is much higher proportionately than in the Wintel world.
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