HT4584: Mac Pro (Mid 2010): Registered DIMM support

Learn about Mac Pro (Mid 2010): Registered DIMM support
frankELF
Level 1 (47 points)
Mac OS X

Q: How do I know if I have RDIMM (registered) installed already or DIMM (unregistered) (Mac Pro 2010 mid year Quad)

I have a Mac Pro Mid 2010, Quad core. The article says not to mix registered with unregistered. So how do I find out which I have installed already? The system report just says - 1066 MHz DDR3 ECC, nothing else.

Frank Fitzpatrick

Mac Pro (Mid 2010), OS X Mavericks (10.9.5)

Posted on Nov 30, 2015 5:50 PM

by Grant Bennet-Alder,Solvedanswer
Grant Bennet-Alder Grant Bennet-Alder
Level 9 (61,373 points)
Desktops
A:

For the mac Pro 2010, the question to ask is, ¿What SIZE is each DIMM?

 

0.5GB, 1GB, 2GB, 4GB are all Unregistered in every case.

 

8GB could go either way -- older ones could be Registered, the ones you bought in the last few years are not.

 

16GB and 32GB are always Registered.

Posted on Nov 30, 2015 7:01 PM

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frankELF

Q: How do I know if I have RDIMM (registered) installed already or DIMM (unregistered) (Mac Pro 2010 mid year Quad)

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  • Helpful answers

  • by Grant Bennet-Alder,Solvedanswer

    Grant Bennet-Alder Grant Bennet-Alder Nov 30, 2015 7:01 PM in response to frankELF
    Level 9 (61,373 points)
    Desktops
    Nov 30, 2015 7:01 PM in response to frankELF

    For the mac Pro 2010, the question to ask is, ¿What SIZE is each DIMM?

     

    0.5GB, 1GB, 2GB, 4GB are all Unregistered in every case.

     

    8GB could go either way -- older ones could be Registered, the ones you bought in the last few years are not.

     

    16GB and 32GB are always Registered.

  • by frankELF,

    frankELF frankELF Nov 30, 2015 7:02 PM in response to Grant Bennet-Alder
    Level 1 (47 points)
    Mac OS X
    Nov 30, 2015 7:02 PM in response to Grant Bennet-Alder

    Thank you. That answers my question because the sizes are 4GB, 2, 2, and 2.

  • by Grant Bennet-Alder,Helpful

    Grant Bennet-Alder Grant Bennet-Alder Dec 17, 2015 5:32 PM in response to frankELF
    Level 9 (61,373 points)
    Desktops
    Dec 17, 2015 5:32 PM in response to frankELF

    Look closely at the price of 8GB DIMMs. If you can get one for the price of 2 4GB DIMMs, then that is a better deal because it leaves more slots open for future expansion.

     

    Always buy from a Vendor who promises:

     

    "It works in your Mac,

    or your money BACK!"

     

    Otherwise you run the risk of owning truly excellent DIMMs, that do not happen to work in your Mac.

     

    When the new ones arrive test them by themselves, to see if the work by themselves, then check whether they "play nice with others".