The Playstation (original) has a 33Mhz CPU and 2MB RAM, but can manage games like Quake II and Wipeout 2097 because of its GPU.
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It did NOT manage Quake2... It BUTCHERED Quake2...
:-)
The engine was really butchered, the lighting
effects were reduced to a minimum, the game did
not have the dark feeling the original had.