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macrumors 65816
The Quadro FX 4500 is a workstation card. Can't be compared to consumer cards like the GeForce 8800 series.The current graphics cards will probably replaced with these:
nVidia GeForce 7300 GT ------------> nVidia GeForce 8300 GT
ATI Radeon X1900 XT ---------------> ATI Radeon HD X2900 XT
nVidia Quadro FX 4500 ---------------> nVidia GeForce 8800GTX or Ultra
I doubt Apple will replace the FX 4500. If they do, they will go with a more powerful Quadro card.
I don't care, I am hoping the X1900 XT is replaced by either the X2900 XT or a GeForce 8800 series card.
If I could pick, I would take a 8800 Ultra or GTX card. They are doing a little better in gaming benchmarks than the X2900 XT.
ATI does not perform as well with OpenGL as nVidia cards.