Leaopard on Powermac Dual 500mhz processor?

If leopard needs 867 mhz, is that cumulative? Will it install without xpostfacto on a computer with dual processors that add up to at leats 867 mhz?

As far as I know, it needs to be 867mhz "non-cumulative". Even if you could get it on that machine, it would likely be painfully slow.

Dual 500mhz does not equal the processing power of 1Ghz, much like my 2.1 C2D does not equal a 4.2Ghz processor. Each core is only capable of 500mhz of processing power.

Van is correct. It does not use the combined MHZ of the 2 CPU's to figure it. Each CPU would have to be 867 Mhz.

There is a utility that you can run to fool 10.5 installer to think you have a 867 Mhz G4 but like Van said, I doubt 10.5 will run that well on your Mac. I used that utility and got it running on a 667Mhz Mac. For just basic and I mean BASIC things it's very useable but it will not even play a DVD without choking and flash videos are a bit draggy.