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Apple Computing Products:
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<blockquote data-quote="rexk" data-source="post: 1569044" data-attributes="member: 243284"><p>Thanks. </p><p>As you can see through this thread, the diagnosis has evolved today. I'm pretty sure that the basis of the problem is hardware (the logic board is only utilizing 8gb RAM from one (lower) riser, and not recognizing the 8gb available from the upper riser. Now using the Activity Monitor, I see that the numerous apps, Parallels, and trading platforms I routinely use consume the 8gb, and peak activity times need more RAM than that. </p><p>So, again, if no one has directions for a possible way to recover the use of the upper riser of four 2gb RAM cards, I will buy a functional logic board and hope it corrects the problem. I hope I can figure out the installation.</p></blockquote><p></p>
[QUOTE="rexk, post: 1569044, member: 243284"] Thanks. As you can see through this thread, the diagnosis has evolved today. I'm pretty sure that the basis of the problem is hardware (the logic board is only utilizing 8gb RAM from one (lower) riser, and not recognizing the 8gb available from the upper riser. Now using the Activity Monitor, I see that the numerous apps, Parallels, and trading platforms I routinely use consume the 8gb, and peak activity times need more RAM than that. So, again, if no one has directions for a possible way to recover the use of the upper riser of four 2gb RAM cards, I will buy a functional logic board and hope it corrects the problem. I hope I can figure out the installation. [/QUOTE]
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