Installation problem with Mac Pro RAM
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From: Jolly Roger on 14 Feb 2010 14:41 In article <1jdwr2a.1mtdnismvsd4sN%mikePOST(a)TOGROUPmacconsult.com>, mikePOST(a)TOGROUPmacconsult.com (Mike Rosenberg) wrote: > Jolly Roger <jollyroger(a)pobox.com> wrote: > > > > Apple has specific instructions in the manual that came with your Mac > > > Pro. Follow those instructions and things should be fine. Vary from them > > > at all and the Mac won't access all the RAM. > > > > Right. I don't understand why he didn't read the instructions before > > inserting a stick of RAM into the machine to begin with. Puzzling... I > > certainly figured cracking open the manual wasn't too much trouble when > > I upgraded mine to 6 GB! > > The thing is, prior Apple tower models weren't nearly as a big deal. The > G4 models took one DIMM at a time with no placement rules, you just had > to have the right specs. The G5 models required matched pairs of DIMMs > installed symmetrically. It's easy to explain here what someone needs to > do. > > Not so with the Mac Pro line. Mine came with two 1 GB DIMMs installed > and I added a 4 GB DIMM. Figuring out the correct locations on my own > would have taken too much trial and error since it was counter-intuitive > for me. Yep - same here. Of course I knew that the day I bought mine, because one of the first things I did was open the manual and take a look at the upgrade steps. -- Send responses to the relevant news group rather than email to me. E-mail sent to this address may be devoured by my very hungry SPAM filter. Due to Google's refusal to prevent spammers from posting messages through their servers, I often ignore posts from Google Groups. Use a real news client if you want me to see your posts. JR
From: Mike Rosenberg on 14 Feb 2010 14:51 Jolly Roger <jollyroger(a)pobox.com> wrote: > Yep - same here. Of course I knew that the day I bought mine, because > one of the first things I did was open the manual and take a look at the > upgrade steps. Patting ourselves on our respective backs doesn't help the OP, though. ;-) -- My latest dance performance <http://www.youtube.com/watch?v=I_9pudbFisE> Mac and geek T-shirts & gifts <http://designsbymike.net/shop/mac.cgi> Prius shirts/bumper stickers <http://designsbymike.net/shop/prius.cgi>
From: Jolly Roger on 14 Feb 2010 16:13 In article <1jdwrw2.oitwb899ukgN%mikePOST(a)TOGROUPmacconsult.com>, mikePOST(a)TOGROUPmacconsult.com (Mike Rosenberg) wrote: > Jolly Roger <jollyroger(a)pobox.com> wrote: > > > Yep - same here. Of course I knew that the day I bought mine, because > > one of the first things I did was open the manual and take a look at the > > upgrade steps. > > Patting ourselves on our respective backs doesn't help the OP, though. > ;-) Well I hope to teach by example. : ) -- Send responses to the relevant news group rather than email to me. E-mail sent to this address may be devoured by my very hungry SPAM filter. Due to Google's refusal to prevent spammers from posting messages through their servers, I often ignore posts from Google Groups. Use a real news client if you want me to see your posts. JR
From: Mike Lane on 14 Feb 2010 17:04 Mike Rosenberg wrote on Feb 14, 2010: > Jolly Roger <jollyroger(a)pobox.com> wrote: > >>> Apple has specific instructions in the manual that came with your Mac >>> Pro. Follow those instructions and things should be fine. Vary from them >>> at all and the Mac won't access all the RAM. >> >> Right. I don't understand why he didn't read the instructions before >> inserting a stick of RAM into the machine to begin with. Puzzling... I >> certainly figured cracking open the manual wasn't too much trouble when >> I upgraded mine to 6 GB! > > The thing is, prior Apple tower models weren't nearly as a big deal. The > G4 models took one DIMM at a time with no placement rules, you just had > to have the right specs. The G5 models required matched pairs of DIMMs > installed symmetrically. It's easy to explain here what someone needs to > do. > > Not so with the Mac Pro line. Mine came with two 1 GB DIMMs installed > and I added a 4 GB DIMM. Figuring out the correct locations on my own > would have taken too much trial and error since it was counter-intuitive > for me. > > I don't understand this. My Mac Pro instruction's specifically state, 'DIMMs must be installed in equal-sized pairs', and this is what I have done. How is it that you have installed a single DIMM? -- Mike Lane UK North Yorkshire email: mike_lane at mac dot com
From: Neill Massello on 14 Feb 2010 17:37 Salmon Egg <SalmonEgg(a)sbcglobal.net> wrote: > 1. Is one 4GB with three 1GB modules a viable combination? There always > seems to be the possibility of a gotcha. In regard to their own memory offerings for the 2009 Mac Pro, OWC states: "4GB Module sets require that all installed modules be of the same kind OWC 4GB module (p/n OWC8566D3MPE4GB)." <http://eshop.macsales.com/Customized_Pages/memory/spn1066.html> The Apple discussions area also contains at least one report of a boot failure caused by mixing a 4GB module with smaller sizes. <http://discussions.apple.com/thread.jspa?threadID=2222148&tstart=135>
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