Performa 640 CD DOS

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Performa 640 CD DOS

I was just wondering, what is the maximum Mac OS that I can run on a Performa 640 CD DOS without a PPC upgrade?

eMac Mac OS X (10.4.6) Performa 640CD DOS

eMac, Mac OS X (10.4.6), Performa 640CD DOS

Posted on Nov 22, 2006 6:35 PM

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Answer 1

Nov 22, 2006 6:42 PM in response to awmusic

The maximum Mac OS for the Performa 640CD DOS is Mac OS 8.1. If you choose to upgrade the processor to a full 68040 though Mac OS 8.1 may not always run reliably. This happened to me when I upgraded my LC 580 to a full 68040. If you decide to upgrade to a full 68040 then I'd recommend Mac OS 7.6.1 instead since it's more reliable in my experience.

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