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Apple Computing Products:
macOS - Operating System
RAM not showing
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<blockquote data-quote="pigoo3" data-source="post: 1383647" data-attributes="member: 56379"><p>Not 100% sure about that difference...but the 8gig showing under the pie chart would seem to indicate that the computer is only "seeing" 8 gig of ram (instead of 16gig).</p><p></p><p>Here's a link to how Apple suggests that the ram be installed in Mac Pro's:</p><p></p><p><a href="http://support.apple.com/kb/HT4433#3" target="_blank">Mac Pro: How to remove or install memory</a></p><p></p><p>...lots of install video's on You Tube as well...just make sure the videos are for 2008 Mac Pro's.</p><p></p><p>What I would do is...remove all eight ram DIMMS (marking those that were working previously)...and see if they look different in any way. Different manufacturer, different chip layout, etc. And put them together in 'Matching pairs"...then reinstall per the Apple instructions linked above.</p><p></p><p>If the ram DIMMS have little white labels on them (sometimes with spec. info on them)...check the ram speed if this info is there. You should be using <strong>"800 MHz DDR2 ECC fully-buffered DIMM (FB-DIMM) memory"</strong>. If the speed on the ram is different than that...it might be the wrong ram. For example...667mhz or 1066mhz. Or if the ram is not "fully-buffered"...it might be the wrong ram.</p><p></p><p>Check everything out...and please report back with your findings.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>- Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1383647, member: 56379"] Not 100% sure about that difference...but the 8gig showing under the pie chart would seem to indicate that the computer is only "seeing" 8 gig of ram (instead of 16gig). Here's a link to how Apple suggests that the ram be installed in Mac Pro's: [url=http://support.apple.com/kb/HT4433#3]Mac Pro: How to remove or install memory[/url] ...lots of install video's on You Tube as well...just make sure the videos are for 2008 Mac Pro's. What I would do is...remove all eight ram DIMMS (marking those that were working previously)...and see if they look different in any way. Different manufacturer, different chip layout, etc. And put them together in 'Matching pairs"...then reinstall per the Apple instructions linked above. If the ram DIMMS have little white labels on them (sometimes with spec. info on them)...check the ram speed if this info is there. You should be using [b]"800 MHz DDR2 ECC fully-buffered DIMM (FB-DIMM) memory"[/b]. If the speed on the ram is different than that...it might be the wrong ram. For example...667mhz or 1066mhz. Or if the ram is not "fully-buffered"...it might be the wrong ram. Check everything out...and please report back with your findings.:) - Nick [/QUOTE]
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