How to upgrade 8 core clovertown to 8 core nehalem

Discussion in 'Mac Pro' started by speters, May 30, 2009.

  1. speters macrumors member

    Joined:
    May 9, 2009
    #1
    I remember when the first 8 Cores came I saw that people where buying the quad cores an replacing the processors with the 8 core processors. So what I am wondering is if there is any way to upgrade a 8 core Clovertown to an 8 core Nehalem? Obviously this is not something apple would offer and I am sure it would void your warranty, but has anyone done this?
     
  2. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    Nope: the CPUs don't run on the same sockets so you need a whole new logic board, memory (they don't use FB-DIMMs) etc. The only way to "upgrade" is to sell your current machine and buy a new one.
     
  3. macz1 macrumors 6502

    macz1

    Joined:
    Oct 28, 2007
    #3
    No, as you would mix up two different processor families. A CPU swap works only if you replace one CPU with another of the same series. For example 53XX Xeons are in the 2006 Macpros, 54XX in the 2008 MP and the Nehalem Xeons belong to the 55XX family...
    The nice jump from dual to quadcore CPUs can only be done on the 2006 models because they were originally equipped with dualcore processors. After that, quadcore 53XX became available.

    I think the best cpu you can install in a 2008 Mac Pro is a X5492 which is clocked at 3.4 GHz. This would roughly lead to a 20% speed increase for a veeery high price.
     
  4. Umbongo macrumors 601

    Umbongo

    Joined:
    Sep 14, 2006
    Location:
    England
    #4
    Thankfully used Mac Pro prices mean it's not too expensive to do this. Though certainly more than the cost of two new processors due to increase in Mac Pro pricing from Apple.
     
  5. gugucom macrumors 68020

    gugucom

    Joined:
    May 21, 2009
    Location:
    Munich, Germany
    #5
    Who is offering conversion kits for 2006 quad cores then? I would be interested to look at the option. Is there a thread to cover this on this board?
     
  6. Sehnsucht macrumors 65816

    Joined:
    Sep 21, 2008
    #6
    NewEgg sells quad 2.93 GHz Nehalem Xeons for US$1,450 a whack, so for two, that's nearly $3,000. Assuming you have no way of getting a really good deal on these from somewhere else, it'd be much cheaper/less hassle to just buy a new Mac Pro. :)
     
  7. Spanky Deluxe macrumors 601

    Spanky Deluxe

    Joined:
    Mar 17, 2005
    Location:
    London, UK
    #7
    You can get 2.66GHz or 3.0GHz Quad core chips from various sources. They're not usually cheap though.

    Those will *not* work in a 2006 Mac Pro.
     
  8. gugucom macrumors 68020

    gugucom

    Joined:
    May 21, 2009
    Location:
    Munich, Germany
    #8
    So when I browse Neweggs server CPU offerings I can find a Harpertown L5430 @ 2,66 GHz with 771-pin socket and 80 W. I would assume that a pair of these would double my processing power at under 1000 $.
     
  9. Umbongo macrumors 601

    Umbongo

    Joined:
    Sep 14, 2006
    Location:
    England
    #9
    Sadly the 5400 series processors don't work on the 2006 Mac Pros. Probably a firmware issue that Apple have no interest in fixing. Your best bet is searching eBay for Xeon 5355. You can get them for under $400 each sometimes.
     
  10. gugucom macrumors 68020

    gugucom

    Joined:
    May 21, 2009
    Location:
    Munich, Germany
    #11
    It is probably due to different node density. the 5355 has 65 nm and the 5430 45 nm.

    the pair of 5355 I can presently get NEW at 500€. sounds quite interesting for doubling the oumpf of the machine.


    5150 (4M Cache, 2.66 GHz, 1333 MHz FSB) X5355 (8M Cache, 2.66 GHz, 1333 MHz FSB)

    Lithography 65 nm 65 nm
    Max TDP 65 W 120 W
    1ku Price $690.00 $744.00
    Number 5150 X5355
    # of Cores 2 4
    Clock Speed 2.66 GHz 2.66 GHz
    Cache 4 MB L2 Cache 8 MB L2 Cache
    System Bus 1333 MHz 1333 MHz
    Instr. Set 64-bit 64-bit
    Core Volt. 1.00V-1.50V 1.0-1.5V
    Tcase 65°C 70°C
    Size 37.5mm x 37.5mm 37.5mm x 37.5mm
    Die Size 143 mm2 286 mm2
    #Transist. 291 million 582 million
    Sockets LGA771 LGA771, PLGA771

    I wonder about the different Thermal Design Power going up from 65W to 120 with only 5 °C higher case temperature. Is that supposed to be done with the same passive heat sink that Apple uses, or do you have to go active heat sink?
     
  11. Sehnsucht macrumors 65816

    Joined:
    Sep 21, 2008
    #12
    Yes, I know. ;) My point was that even if they did work (and they obviously won't) it'd be goofy to do a CPU upgrade instead of just ordering a new Nehalem MP from Apple.
     
  12. gugucom macrumors 68020

    gugucom

    Joined:
    May 21, 2009
    Location:
    Munich, Germany
    #13
    I will start looking for 3565 from Proliant servers. If I can lay my hand on two of those for a decent price I will have a 10% speed bump and a good gain with rendering programms.
     

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