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I still have an old Power PC machine and was wondering what the latest OS X build I can install on it?

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Thanks for the tag edit. I did not have the mojo to add a new tag! Darn you Dr. Evil! – geoffc Sep 8 '10 at 19:16
up vote 8 down vote accepted

snow leopard (OS X 10.6) is also the first Mac OS release since the introduction of System 7.1.2 that does not support the PowerPC architecture, as Apple now intends to focus on its current line of Intel-based products.

Thus OSX supported PowerPC upto and including version 10.5 (Leopard)

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10.5 Leopard is the last to support PowerPC as far as I know:

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Snow leopard does support PowerPC applications, this function was dropped with Lion. I base this on one MacBook with Snow Leopard on it works fine with Microsoft Office X, Quake II (OS XVersion), Halo, Roxio Toast Lite 5.2.2.

However on my upgrade MacBook running Lion they are tomb stoned and when you try to run them the message you receive is PowerPcC no longer supported!

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OS X running on PowerPC hardware and OS X supporting PowerPC applications is not the same thing. – patrix Apr 6 '14 at 8:17

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