GeYun

Q: Can i install ecc reg modules in my mac pro mid 2010 ?

Hi all, my mac pro has 6x1GB pc3-10600E modules original installed,  I want expand to 6X4GB ,but there is no 4GB 10600e modules from store(not apple store, too expensive), but there are so many cheap pc3-10600R modules, should 10600R module work on my mac ?

 

GeYun

Mac Pro 2010

Posted on Nov 21, 2013 6:21 AM

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Q: Can i install ecc reg modules in my mac pro mid 2010 ?

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  • by ttreen1950,Solvedanswer

    ttreen1950 ttreen1950 Nov 21, 2013 6:47 AM in response to GeYun
    Level 2 (161 points)
    Mac OS X
    Nov 21, 2013 6:47 AM in response to GeYun

    Apple suggests that they will:-

     

    See:- http://support.apple.com/kb/HT4433#2

     

    Beware - your Mac won't start if you have both types installed. For full details see:-

     

    Mac Pro (Mid2010) Registered DIMM support.  http://support.apple.com/kb/HT4584

     

    Do your reading thoroughly, or seek advice from Crucial or OWC:- I've had great service & good advice from both in the past - and I'm in the UK, but I've still bought from these guys.

     

    HTH

     

    Ted

  • by The hatter,Helpful

    The hatter The hatter Nov 21, 2013 6:54 AM in response to GeYun
    Level 9 (60,935 points)
    Nov 21, 2013 6:54 AM in response to GeYun

    Difference between RDIMM and UDIMM

    R = Registered, U = Unregistered, FB = Fully Buffered, 5520 always needs ECC registered fully buffered.

    please strictly stick to the memory compatibility list for your motherboard - there are even more differences than buffered vs. unbuffered (eg. single/dual/quad rank) - when purchasing memory not on the compatibility list get a written confirmation from the dealer the modules will work for a certain motherboard.

    When you populate slots 3 & 4 you do take a hit as they share one channel.

    If 2 memory DIMMs are used per channel, this "...results in a reduction of maximummemory bandwidth for 2DPC (DIMMs per channel) configurations with UDIMM by some 5% in comparison to RDIMM." [1] (p. 14). This is because "...when you go to 2 DIMMs per memory channel, due to the high electrical loading on the address and control lines, the memory controller uses something called a “2T” or “2N” timing for UDIMMs. Consequently every command that normally takes a single clock cycle is stretched to two clock cycles to allow for settling time. Therefore, for two or more DIMMs per channel, RDIMMs will have lower latency and better bandwidth than UDIMMs." [2]  http://en.wikipedia.org/wiki/Unbuffered_memory

     

    www.macsales.com

     

    How To Install and Remove Memory Mac Pro

     

    Mac Pro 2009 - 2012

     

    http://www.datamemorysystems.com/apple-mac-pro-quad-core-intel-xeon-nehalem-2-66 ghz-mb871ll/a-early-2009-memory-upgrades/

     

    I would say 6 x 4GB only if you don't thiink you will ever need more than 24-32GB. Otherwise look at 8GB DIMMs

  • by Grant Bennet-Alder,Helpful

    Grant Bennet-Alder Grant Bennet-Alder Nov 21, 2013 7:15 AM in response to The hatter
    Level 9 (61,140 points)
    Desktops
    Nov 21, 2013 7:15 AM in response to The hatter

    Look hard at 8GB DIMMs. My shopping showed that one 8GB DIMM was cheaper than 2@4GB, so there is no reason to buy smaller than 8GB DIMMs any more.

     

    In the US, also look at Data Memory Systems for good quality at modest prices with the usual lifetime replacement and guarantee that:

     

    "It works in your Mac,

    or your money Back!"

     

    http://www.datamemorysystems.com/apple-memory/

  • by GeYun,

    GeYun GeYun Nov 21, 2013 8:48 AM in response to ttreen1950
    Level 1 (0 points)
    Nov 21, 2013 8:48 AM in response to ttreen1950

    Thanks for your help, i reading http://support.apple.com/kb/HT4433#2 thoroughly, that i know my mac pro support registered dimms , if nothing wrong , 10600R ECC modules will work fine in my mac , OWC or DMS mention by The hatter and Grant Bennet-Alder provide excellent solution, but......I live in china, buy something thought International package delive is a adventure(may take months, goods broken) ,in here, mac pro didn't popular like US, UK, that's why i hardly find a dealer sell 10600E modules, because very rare computer use unbuffered ECC module . last year, my mac pro CPU brokendown(i known it when fix done), Apple Maintenance technician spend 3 month repaire my mac , they guys replace a part  and waiting for another part because they didn't have enought replacement part... so you know how rare mac pro in here......Sorry, i get carried away -.-|||

    I will buy one 4GB 10600R Ecc module first, make sure it will work in my mac , or refund it .....

    thanks for all you people's help...regards

    GeYun