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So the linked diagram would be correct for a 2.66 MacPro, right? I ask because that is what I have and the Apple Genius has me keep the 2X512k in riser A and the 2X2GB under them in riser B. That diagram shows the 2X2GB in riser A with the smaller memory below. Would this be better to put the big sticks in riser A then?

Perhaps this is where my question should go:

https://forums.macrumors.com/posts/5192256/
 
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