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Capsule summary if you read the whole thread is -- 8 GB failed abysmally.

Although 8 GB is recognized, as soon as you start addressing more than 4 GB, performance slows to a crawl.
I was more surprised that the machine booted though. I doubt we're going to get a fix from Apple for current hardware, ever.
 
Perhaps it's a conflict with the firmware or some hardware component of the MacBook Pro, but I always knew they could take it, we just needed somebody to prove it... and now it has been proved (though buggy).
 
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