Giving developers a programmable 3D pipeline that allows them to create customized code paths for different GPUs means that gamers living at different ends of the 3D food-chain will hopefully all be able to have at least a good (if not great) gaming experience. The problem is how to evaluate 3D performance in an "apples to apples" manner, and give consumers a good idea of what kind of performance they can reasonably expect from a given piece of hardware.
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