The Case of the Missing RAM



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Buy brand new RAM from OWC ( and then sell back all of your existing DIMMs, or return the 2 new DIMMs and sell back the 2 old/Apple DIMMs and buy all new RAM.

Having ANY sort of mismatch between brands, manufacturing, timing, etc has been EXTREMELY problematic on our MacPro's at work, so much so that when we upgrade RAM we do full upgrades and do not combine old and new.

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