ok, now I get your point and concept. Thanks for explaining it more detailed!
Are G5s realy that expensive over there? you can get a 2x2,3GHz G5 for about 420USD (300EUR) on german ebay
😕
I would recommend, you study the specs on everymac.com (open several tabs for comparing the specs more detailed or use the comparison function on everymac.com for a quick overlook/comparison).
There are 4!!! Generations of 2x2GHz G5s and the last one would be the most worthy of them it has PCIe instead of PCI-X and AGP. (Though I would go for a 2,3GHz if I still wanted one or a Quad 2,5GHz if I'd like to play the game of "to leak or not to leak").
There are also 2 generations of the 2x2,3GHz model! (second with PCIe, etc.).
Stay away from the 2x2,5GHz since it is liquid cooled and the most prominent to fail (still not sure whether they were just more often sold or really more crappy than the other two liquid cooled models 2x2,7 and 4x2,5GHz. I am not sure because they keep counting on the internet but do not say how many percent failed of the models sold, they only say how many percent of all models that came to service.
BUT! If you not need a certain powerpc programm, but want to add cards than go for the Mac Pro or if you just like the older Macs than buy a PowerMac G4/G5, but care for the price.
Others might/should correct me, though. every solution has its plus
and trade offs.