I have a PowerPC 7200 90MHz 48M RAM 1G HDD MacOS8.0, and I'm considering
installing Linux. I have checked up the Linux site - the 7200 is listed as
capable of  supporting it.

Can anyone advise me if there would be any substantial gain in the performance
of Csound under Linux compared to MacOS8.0? Also are there any known pitfalls
of which I should be aware?

Any help would be much appreciated.