We work with Apple, ATI, and Nvidia to make everything run as well as possible. Doom 3 had AltiVec code in it, and there were driver changes to make things work better. The bottom line is that the compiler / cpu / system / graphics card combinations available for macs has just never been as fast as the equivalent x86/windows systems. The performance gap is not a myth or the result of malicious developers trying to make your platform of choice look bad. -- John Carmack

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