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Uhh dude? You can upgrade a G5 to X1900XT now...

And i think dual 2.5 is faster than the iMac, so just upgrade RAM and GPU and whatever else you think is a downfall. It's cheaper.

The x1900xt will not fit into my model. I don't have a PCI express. Also, I need an Intel Mac, as I have stated before, a PPC upgrade is not an option for me.
 
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