10 Replies Latest reply: Apr 11, 2012 12:25 PM by chris_gmu
chris_gmu Level 1 (0 points)

A friend owns the first intel mac pro, apple made. Model identifier is MacPro1,1. He has 3GB of memory installed. One pair of 2x512MB and one pair of 2x1GB.

We want to install one more pair of 2x1GB and a pair of 2x2GB. Is this possible ? if yes is it ok to install the 2x1GB pair in the riser that already holds the 2x1GB pair and then install the 2x2GB pair to the riser that holds the 2x512MB pair ?

 

Memory:

 

Memory Slots:

 

  ECC:          Enabled

 

DIMM Riser A/DIMM 1:

 

  Size:          512 MB

  Type:          DDR2 FB-DIMM

  Speed:          667 MHz

  Status:          OK

  Manufacturer:          0x830B

  Part Number:          0x4E54353132543732553839413842442D3343

  Serial Number:          0x28EE0C63

 

DIMM Riser A/DIMM 2:

 

  Size:          512 MB

  Type:          DDR2 FB-DIMM

  Speed:          667 MHz

  Status:          OK

  Manufacturer:          0x830B

  Part Number:          0x4E54353132543732553839413842442D3343

  Serial Number:          0x58DC0C62

 

DIMM Riser B/DIMM 1:

 

  Size:          1 GB

  Type:          DDR2 FB-DIMM

  Speed:          667 MHz

  Status:          OK

  Manufacturer:          0x0000

  Part Number:          0x000000000000000000000000000000000000

  Serial Number:          0xFFFFFFFF

 

DIMM Riser B/DIMM 2:

 

  Size:          1 GB

  Type:          DDR2 FB-DIMM

  Speed:          667 MHz

  Status:          OK

  Manufacturer:          0x0000

  Part Number:          0x000000000000000000000000000000000000

  Serial Number:          0xFFFFFFFF

 

DIMM Riser A/DIMM 3:

 

  Size:          Empty

  Type:          Empty

  Speed:          Empty

  Status:          Empty

  Manufacturer:          Empty

  Part Number:          Empty

  Serial Number:          Empty

 

DIMM Riser A/DIMM 4:

 

  Size:          Empty

  Type:          Empty

  Speed:          Empty

  Status:          Empty

  Manufacturer:          Empty

  Part Number:          Empty

  Serial Number:          Empty

 

DIMM Riser B/DIMM 3:

 

  Size:          Empty

  Type:          Empty

  Speed:          Empty

  Status:          Empty

  Manufacturer:          Empty

  Part Number:          Empty

  Serial Number:          Empty

 

DIMM Riser B/DIMM 4:

 

  Size:          Empty

  Type:          Empty

  Speed:          Empty

  Status:          Empty

  Manufacturer:          Empty

  Part Number:          Empty

  Serial Number:          Empty

  • Kappy Level 10 (266,068 points)

    About RAM installation in the Mac Pro

     

     

    Ram should be installed minimally in matched pairs and optimally in matched quads.  This means the memory modules are the same size and specifications.  They should also be equipped with the Apple-certified style of heat sink.

  • Network 23 Level 6 (11,900 points)

    I know that it is possible because I have three pairs of RAM from three different manufacturers, and it's been running great that way for about 5 years now. And it's a crazy mix...2x512MB (stock), 2x2, and 2x4.

     

    What I don't know, which you'll get from other, better posts, is how to arrange them to get the absolute best performance.

  • Kappy Level 10 (266,068 points)

    Then take a look at the links in my earlier post.

  • The hatter Level 9 (60,930 points)

    MacPro1,1

     

    Generally, 4 is ideal (one set on each Riser A1:2, B1:2

     

    2 x 512MB: not worth using up two slots

     

    Mixing 512s and 2s and 4s.... not that ideal "symmetrical memory performance" and nor is having 6 DIMMs, 4 or 8 DIMMs.

     

    Using slots 3&4 those are shared bandwidth and add to higher latency with the slots 1&2

     

    FBDIMMs have iimproved and dropped in price since Jan 2007 (forget anything before that except maybe OEM Apple) and it was March '07 that every vendor seemed to get it right.

     

    They are rated for 10-15W each DIMM which adds up and puts out a lot of heat when you think of them running up to 80*C (under 70C though is what you want and to aim for, even by boosting fans from their low default by 300 rpm).

     

    2008 was more forgiving and didn't have the trouble with latency or having to use 4 or 8, there you wanted to use all 8 slots. And they took 800MHz. A few people had trouble mixing 4GB with 1GB (the smallest size supported in Early 2008).

  • chris_gmu Level 1 (0 points)

    The problem is that my friend is a music producer and wants to upgrade his pro tools HD setup in version 10 that has a minimum memory requirment of 8GB. What do you suggest ?

  • Kappy Level 10 (266,068 points)

    Maybe your friend should consider buying memory based on how much he needs and what provides the best memory performance which in the MP 2006 means installing memory in equal-sized quads for quad-channel performance. Here's a pricing chart from DataMem where I purchase my RAM:

     

    Screen Shot 2012-04-11 at 1.09.27 PM.png

  • The hatter Level 9 (60,930 points)

    #1 remove the 2 x 512MB that only gives you 1GB

     

    A Add 2 x 4GB to give you 4 x 4GB then

     

    B add another set of 2 x 2GB for 24GB 

     

    C add 4 x 2GB to your setup and you save and still have 20GB

     

    often there is minimum and recommended configuration.

     

    OS X will cache a number of things also for you with the add'l RAM

     

    I picked up 4 x 2GB for $110 recently

    http://www.amazon.com/BUFFERED-PC2-5300-FB-DIMM-APPLE-Memory/dp/B002ORUUAC/

  • chris_gmu Level 1 (0 points)

    But this mac pro model goes up to 16GB of memory...

     

    Thank you all for your replies!

  • The hatter Level 9 (60,930 points)

    Nooooo - it was shown early on 8 x 4GB is supported. And that was as soon as 4GB DIMMs existed. Apple never updates their specs so don't abide or you'd be asking if 1TB hard drives are supported, or what about putting the ATI 5770. Take some things with a grain of salt.

     

    http://www.macsales.com/memory/macpro

    - as well as Crucial and others

     

    And there is also your online encyclopedia

     

    http://www.bing.com/search?q=Mac+Pro+1%2C1+32GB

  • chris_gmu Level 1 (0 points)

    ooooo YOU ARE THE MAN! Thank you sooo much!