On Mar 30, 2011, at 1:22 AM, Jonas Ulrich wrote:
I'd put 10.5.8 on it. I just set up a G4 iBook 1GHZ with Leopard and
it ran great.
With 10.4.11 it would run great 20-30% faster.
Don't take my word for it, here's some measured results:
10.4.11 Xbench score 37.78:
<http://db.xbench.com/merge.xhtml?doc1=443708>
10.5.2 Xbench score 23.71
<http://db.xbench.com/merge.xhtml?doc1=287855>
Note, there were no Xbench scores for 10.5.8 on a 1GHz iBook, but you
could test yours independently and upload your result to the Xbench
archives.
As I have said previously, the difference in speed is noticeable on my
1.58GHz Mini, and applies to all PPC Macs running Leopard. The strange
thing is that for Intel Macs Leopard runs faster than Tiger, while for
PPC Macs Leopard runs slower. This means if you had an Intel Mac that
was identical speed to a PPC Mac in Tiger, when you installed Leopard
onto both, the Intel Mac would seem blazing and the PPC Mac really
slow when they were previously identical under Tiger. I believe this
is evidence of planned obsolescence by Apple, similar to the way Intel
compilers produce code that runs slower on AMD CPUs, and faster on
Intel CPUs, when there should be little or no difference. I know of no
logical reason that Leopard should vary so dramatically from Tiger
unless someone was purposefully looking for these specific results.
Apple has done similar shenanigans in the past, for example
underclocking the original 500MHz iceBook's bus speed to 66MHz because
at its native 100MHz it was a faster computer than the TiBook still
being sold. Apple was moving to Intel, and slowing down PPC Macs was a
good tactic for forcing the issue. Tiger is the fastest PPC Mac
version of OS X if you have sufficient RAM, HD space, and a supported
video card.
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