MacPro 3,1

This is the machine I want to upgarde to El Capitan

Model name: Mac Pro

Model identifier: MacPro3, 1

Processor name: Intel Quad - Core Xeon

Processor speed: 2.8 GHz

Number of processors: 1

Total number of Cores: 4

L2 Cache: 12 MB

Memory: 4 GB

Bus speed: 1.6 GHz

Version of the SCM (System): 1.25f4

I want to move to Mac OS X version 10.5.8 to sow Leopard Mac OS version 10.6.3 and I get this message that Mac OS X Snow Leopard cannot be installed on this computer... no explanation...

Do I need to buy more memory, a larger hard drive?

Any help will be greatly appreciated

What Snow Leopard disc are you using?

A retail disk (it has white background mark)?

Tags: Mac

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    DIMM 3

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    Imation ImationFlashDriv 7.74 GB

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    Brother HL-2140 series

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    [loading] 149 tasks Apple

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    [ongoing] com.etresoft.EtreCheck.292832

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    [ongoing] com.fiplab.memoryclean.89312

    [ongoing] com.google.Chrome.72672

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    [ongoing] com.macpaw.CleanMyMac3.Menu.142752

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    [ongoing] JP.co.Canon.cijscannerregister.193952

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    Flash Player: 22.0.0.209 - SDK 10.9 (2016-07-17) [Support]

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    AdobePDFViewer: 15.017.20053 - SDK 10.11 (2016-08-09) [Support]

    WacomSafari: 1.1.1 - 1 (2010-11-16) [Support]

    EPPEX plugin: 3.0.5.0 (2009-07-30) [Support]

    JavaAppletPlugin: Java 8 update 91 build 14 version Check (2016-05-06)

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    CitrixOnlineWebDeploymentPlugin: 1.0.105 (2013-04-26) [Support]

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    Adobe Version Cue CS4 (2010-09-16) [Support]

    Flash Player (2016-06-29) [Support]

    Flip4Mac WMV (2011-01-14) [Support]

    Java (2016-05-06) [Support]

    Paragon NTFS for Mac® OS X (2016-07-15) [Support]

    Perian (2011-07-24) [Support]

    Retrospective (2012-10-17) [Support]

    Seagate for Mac OSX dashboard (2015-06-09) [Support]

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    Skip system files: No.

    Mobile backups: OFF

    Automatic backup: YES

    Volumes to back up:

    Macintosh HD: Disc size: 999,35 GB disc used: 737,51 GB

    Destinations:

    Backup drive Seagate Plus [Local]

    Total size: 3.50 TB

    Total number of backups: 62

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    Last backup: 08/11/16, 16:31

    Size of backup drive: Excellent

    Size of backup 3.50 TB > (disk size 999,35 GB X 3)

    Top of page process CPU: ⓘ

    48% retroISA

    9% WindowServer

    6% CEPHtmlEngine Helper (10)

    4% kernel_task

    2% plugin-container

    Top of the process of memory: ⓘ

    1.18 GB RetroISA

    1020 MB kernel_task

    Firefox 999 MB

    647 MB mdworker (21)

    Com.apple.WebKit.WebContent (5) 426 MB

    Information about virtual memory: ⓘ

    219 MB of free RAM

    7,77 used GB RAM (1.62 GB being cached)

    10.51 Go Swap used

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    August 11, 2016, 14:44:49 ~/Library/Logs/DiagnosticReports/Mail_2016-08-11-144449_[redacted].crash

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    Hello!

    I've got this MacPro (8-core 2,4 / mid-2010), and I can't seem to find new 1066 MHz DDR3 RAM buy to the Brazil.

    I can only find 1333 MHz or higher available. Do you know if one of these newer DDR3 would work with it?

    Thank you!

    1333 MHz RAM works perfectly if the manufacturer declares that they will work in a Mac Pro 2012.

    The only problem you might have is the mixture of memory speeds.

    Also, you can mix the memory ECC and non - ECC

    In addition, you can not mix registered and non-registered RAM. Usually 16 GB and more big sticks are recorded.

    I upgraded the memory I have my Mac Pro 2013 (1866 MHz) and deleted memory worked fine in my Mac Pro 2009 but ran at 1066 MHz

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