Will this work? MacPro 1,1 and Xeon X5355

Discussion in 'Mac Pro' started by Hammer59, Jan 20, 2014.

  1. Hammer59, Jan 20, 2014
    Last edited by a moderator: Jan 20, 2014

    Hammer59 macrumors newbie

    Joined:
    Dec 15, 2013
    #1
    I have a MacPro 1.1 and I want to upgrade the processors on it. Found this intel Xeon X5355 - 2.66 GHz - 4 core - LGA771 Socket - for ProLiant BL460c at a decent price. Can anybody tell me if this processors will work with my computer. Already upgraded the firmware to 2.1
    Thanks
     
  2. Robert Davies macrumors 6502

    Robert Davies

    Joined:
    Jul 28, 2011
    Location:
    People's Republic of Wrexham
    #2
    Short answer = Yes

    Not so short answer = Yes, you need a matched pair.

    Longer answer = Ditto the above, plus you will have noticed various steppings being available denoted by 'SLAED' or 'SLAC4' or similar, after the model numbers - Ideally the steppings should match, but in the early days of processor upgrades in the Mac Pro 1,1 it was found that mismatched steppings did work most of the time.

    If i've been unclear (as usual! :)) get back to me.

    -Rob
     
  3. Hammer59 thread starter macrumors newbie

    Joined:
    Dec 15, 2013
    #3
    Thank you Robert for your answer. I have 1 more question tho. I am going to order this processors from a company that sells components from old servers. If I am going to tell them that I need a matching pair will it be enough? I mean, they should know what I want without going into more details, right?
    Thanks again
     
  4. Sko macrumors regular

    Sko

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    Germany
    #4
    That should do it. Tell them you want SLAEGs if possible, as that's the last stepping with dramatically reduced power consumption in idle states.
     
  5. Hammer59 thread starter macrumors newbie

    Joined:
    Dec 15, 2013
    #5
    OK guys, thanks again for your help. I'm going to order them, asking them for a matching pair with SLAEG if possible. Was also looking for a video card upgrade. Right now I have the Radeon HD 2600 XT, but since I want to switch to Maveriks, I understand that a more powerful card is recommended. If I get a Radeon 5770 PC version, are this cards coming with the power cable? I know that the Mac version of the card comes/uses that power cable, but have no clue about the PC ones. And since "Zeus" is no longer developed, is there any other method to flash the 5770?
     
  6. hwojtek macrumors 65816

    hwojtek

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    A small rural village in western Poland
    #6
    Yes, you use ATIFlash and look for firmware on netkas.org.
     
  7. Robert Davies macrumors 6502

    Robert Davies

    Joined:
    Jul 28, 2011
    Location:
    People's Republic of Wrexham
    #7
    On the netkas forum there is a dedicated thread on flashing/updating 5770/5870s using the tool hwojtek detailed above - just click the blue text in his post and it should download.

    btw

    You WILL need a Mac power cable - It may be sold as a Power Mac G5 video card power cable, or a Mac Pro video card power cable. The Mac Pro itself will only come with the vid card cables for the card it shipped with as std - the 2600 didn't need a cable so… you know what you need.
     
  8. hwojtek macrumors 65816

    hwojtek

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    #8
    A quick advice though: the OP will definitely need a FreeDOS boot image (I am not quite sure if it would boot from USB or not), sure as hell it boots from a CD, so with a bit of tinkering, OP can burn a CD with FreeDOS and ATIFlash and firmware file, boot from it, reflash the graphic card, reboot and he'll be all set. The card will work in FreeDOS even if not flashed, so it is really easy.
     
  9. hannibal2, Mar 13, 2016
    Last edited: Mar 13, 2016

    hannibal2 macrumors newbie

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    Mar 13, 2016
    #9
    I am also looking into updating my MP 1,1 with 2x5355's. I've been reading quite a lot about it. One thing is still unclear to me though: what exactly is a matched pair? does that only mean that both need to be of the same model (e.g. SLAED)? Currently I've got two offers for 1x 5355 each and I am wondering whether I can mix them. I saw pictures of the two processors and both read the same:

    Intel 05 x5355
    Intel Xeon
    SLAEG Costa Rica
    2.66GHZ/8m/1333
    3752....

    Greetings!
     
  10. Machines macrumors 6502

    Machines

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    Jan 23, 2015
    Location:
    Fox River Valley , Illinois
    #10
    Well, technically a matched pair of processors means they both have the same S-Spec .

    For the X5355 Xeon processor , there are three different Mac compatible production grade S-Specs :

    SL9YM , SLAC4 , SLAEG .

    You should really use matched pairs, as each version has specific characteristics . You might lose some characteristics if you mix and match them in an installation .

    By the way, you are advised to avoid Engineering Samples due to undocumented errata . These have a different S-Spec designation .
     
  11. hannibal2 macrumors newbie

    Joined:
    Mar 13, 2016
    #11
    Thanks for your reply,

    ok. So if I am getting two SLAEGs (even though from two different dealers) there shouldn't be a problem? I thought maybe there is something else to a matched pair than the S-Specs. Maybe there are different 'batches' of them so that you can only use e.g. two 5355s from March 2006 or so. So if the two processors read the same as mentioned in my previous post they should work fine together, right?
     
  12. les24preludes macrumors member

    Joined:
    Feb 6, 2011
    #12
    For the X5355 Xeon processor , there are three different Mac compatible production grade S-Specs :
    SL9YM , SLAC4 , SLAEG .........

    On the same theme, I'm thinking of using E5345 since they're cheaper. The model numbers there appear to be SL9YL, SLAC5, SLAEJ.

    Are all those Mac compatible?
     
  13. Machines macrumors 6502

    Machines

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    Jan 23, 2015
    Location:
    Fox River Valley , Illinois
    #13
    http://forums.macrumors.com/threads/mac-pro-cpu-compatibility-list.1954766/
     
  14. les24preludes macrumors member

    Joined:
    Feb 6, 2011
    #14

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