Nagus

Q: Mac Pro 3,1 early 2008 CPU Upgrade Question

I'm using an Early 2008 Mac Pro with a single CPU configuration (2.8Ghz, 4 Cores) and I just tried to upgrade it with two 3.4Ghz Xeon X5492 SLBBD, finding out, that they dont work in my 2008 Mac Pro.

 

The Question is: will two Xeon X5482 SLANZ 3.2Ghz C0 work in my mac pro 3,1 from early 2008?

... or is there any possibility to persuade my old mac runnig with the two 3.4Ghz CPUs i bought first?

 

Thanks!

Erich

Posted on Jul 24, 2014 2:56 AM

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Q: Mac Pro 3,1 early 2008 CPU Upgrade Question

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  • by kaz-k,

    kaz-k kaz-k Jul 24, 2014 4:28 AM in response to Nagus
    Level 5 (5,872 points)
    Desktops
    Jul 24, 2014 4:28 AM in response to Nagus

    2008 Mac Pro CPU Upgrade report(from single 2.8GHz to dual 3.0GHz Quad Core):

    http://www.xlr8yourmac.com/archives/aug10/082310.html

  • by Nagus,

    Nagus Nagus Jul 24, 2014 4:56 AM in response to kaz-k
    Level 1 (0 points)
    Jul 24, 2014 4:56 AM in response to kaz-k

    Thanks, but what about going from signle 2.8GHz to dual 3.2GHz?

  • by kaz-k,

    kaz-k kaz-k Jul 24, 2014 5:46 AM in response to Nagus
    Level 5 (5,872 points)
    Desktops
    Jul 24, 2014 5:46 AM in response to Nagus

    They work on your early 2008 Mac Pro.

    Apple Mac Pro Eight Core(2008) spec.

    http://www.everymac.com/systems/apple/mac_pro/specs/mac-pro-eight-core-3.2-2008- specs.html

  • by Nagus,

    Nagus Nagus Jul 24, 2014 5:52 AM in response to kaz-k
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    Jul 24, 2014 5:52 AM in response to kaz-k

    Thanks, I'll give it a try and post my findings

  • by Nagus,

    Nagus Nagus Aug 22, 2014 12:13 AM in response to Nagus
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    Aug 22, 2014 12:13 AM in response to Nagus

    I did it and it worked!!! went from one 2,8Ghz xeon to two 3,2Ghz xeons worked absolutely flawlessly!

  • by Jon Tangent,

    Jon Tangent Jon Tangent Dec 1, 2014 8:09 AM in response to Nagus
    Level 1 (0 points)
    Dec 1, 2014 8:09 AM in response to Nagus

    Do you mind sharing the full details of your 3,2Ghz Xeons Nagus?

     

    I've just hit the same problem!  Originally bought a couple 3.2GHZ, X5482s but they got lost in the post!  So, got a couple 3.4GHz, X5492s from the same guy, dropped them in with some Arctic Silver and the MAC won't boot.  Called Jigsaw who said that MACs are weird with certain apparently interchangeable parts and just aren't compatible.  Apparently, there wasn't a board change until 2009 so, apart from the power jump, I don't get it!  PSU rates at about 900W I think.


    Nagus just managed to swap out for the 3.2GHz, X5482s when they're also not supposed to be compatible and are also rated at 150W just like the 3.4GHz.  Anyone know why?  Only thing I can think of is the EFI but I'm more used to PCs and a bit of a MAC noob to be honest!

     

  • by Szmooz,

    Szmooz Szmooz Mar 17, 2016 6:03 AM in response to Nagus
    Level 1 (0 points)
    Mar 17, 2016 6:03 AM in response to Nagus

    I know that this post is quite old already however, I am hoping to find out if there are 2 different 'versions' of the Xeon x5482 3.2Ghz processor. I purchased a matching pair and they were advertised as 'Intel Xeon 3.2Ghz SLBBG Quad-Core'. Both are identical.

    The 2.8Ghz that I pulled out, had the phrase 'SLANT' stamped on the processors, the replacements do not. I tried to compare other listings for the x5482 and some seller's reference the phrase 'SLANZ' yet I don't seem to see it stamped on the processor.

    I did install these proc's and my MAC will not power on.

     

    I also found E5482 Xeon processors and those have the phrase 'SLANZ' stamped on them......did I buy the wrong proc's for my upgrade?

  • by rafael152,

    rafael152 rafael152 Jun 7, 2016 4:56 AM in response to Szmooz
    Level 1 (4 points)
    Jun 7, 2016 4:56 AM in response to Szmooz

    Yesterday I tried replacing two of my 2.8 for 3.2 and nothing.  Didn't work.  Are the CPUs labeled Slanz required to do this upgrade?

     

    Not a lot of information on this topic, just trying to get a few more years out of my Mac Pro 3,1

     

    The processors I tried were Intel Xeon X5482 3.2GHz SLBBG Quad Core LGA771 Processors.