Matt Mcgregor

Q: Mac Pro 6.1 Memory config for upgradeability

Hi All,

 

Keen on purchasing a new Mac Pro 6.1 but want some guidance on Memory configurations that will allow for an upgrade path for more memory. The apple memory installation guide for Mac Pro (https://support.apple.com/en-us/HT205044) shows configs with most, or all, of the RAM slots populated.

Ie. 16GB = 4GB x 4 slots. / 32GB = 8GB x 4 slots. The issue with purchasing a Mac Pro with this config is there is no room for expansion without replacing ALL existing RAM modules. Especially given that the 8GB 'UDimm' module can't co-exist with the 16GB 'RDimm' module.


A. If I wanted a workstation with 32GB Ram

Is it possible to purchase 32GB as 2 x 16GB RDIMMS, to leave 2 slots free for future expansion to the full 64GB (RDIMM Max)? 


B. If I wanted a workstation with 16GB Ram

Is it possible to purchase 16GB as 2 x 8GB UDIMMS, to leave 2 slots free for future expansion to 32GB (UDIMM Max).? 

 

If possible, how is this done through the Apple Store, or does a Reseller need to place a special BTO (Build to Order) config?

 

Please advise.

 

Thanks,

 

Matt.

Posted on Sep 10, 2015 4:38 PM

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Q: Mac Pro 6.1 Memory config for upgradeability

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  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Sep 10, 2015 5:02 PM in response to Matt Mcgregor
    Level 9 (61,368 points)
    Desktops
    Sep 10, 2015 5:02 PM in response to Matt Mcgregor

    it is clear we can both leave slots open (which Apple has done in some configurations), and mix sizes (from experiments OWC/macsales has done).

     

    the issue with registered DIMMs forces your hand in this case -- if you EVER can imagine going larger than 32GB, you should use 16GB DIMMs (which are Registered) from the start.

     

    The only unresolved issue in my mind is whether ONE 16GB module works by itself. If it does, that is the ideal way to begin to phase in your memory expansion.

    --------

     

    Apple has historically priced its modules Very High. That has moderated somewhat, but they are still higher than the deals you can get from some other Reputable Mac-Centric Vendors.

     

    always buy from a Vendor who can promise you:

     

    "it works in your Mac,

    or your money Back!"

     

    These three Vendors meet those criteria well:

     

    Data Memory Systems

    OWC/macsales

    Crucial

     

    .