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Unreal Tournament 2003 is the best game for you to show the Gfx capabilities. I would recommend X-Plane too, which plays extremely nicely on my Dual G5. :) Both, kick ass! :D
 
If your intention is to showoff to your PC buddies with games on the G5, you will be sorely disappointed. The video drivers for the PC world for the same video cards are much better/optimized. Add to that the availablity of higher-end versions of the same cards, and on a graphics' level it's not a competition point.

However, if you are doing this just to see better graphics on your system, UT2K3 is as good as any program to show some nice l&t and pixel shaders.
 
Originally posted by legion
However, if you are doing this just to see better graphics on your system, UT2K3 is as good as any program to show some nice l&t and pixel shaders.

Its my first Mac and the best PC I used is my Pentim 3 1Ghz (still pretty good). So with all this power and the novelty of the G5 Mac I wanna see what it can do :D
 
Aliens Vs Predator 2

Aliens Vs Predator 2 would challenge your system. On a dual 800 MHz G4 PowerMac I have to run it at the lowest resolution with the lowest quality textures but on a dual G5 it should be playable the way it was meant to be played.
 
That's if it isn't delayed like Halo always seems to be. I haven't played Alien v. Predator 2 yet, but Unreal 2k3 is pretty good for showing all out power with everything turned on.
 
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