2009 macpro4,1 2.66 upgradeable to hex?

Discussion in 'Mac Pro' started by auhlixer, Mar 12, 2012.

  1. auhlixer macrumors regular

    Apr 15, 2006
    Philadelphia, PA
    If the firmware is flashed to 5,1 can the 2.66 cpu be upgraded to the W3680 Xeon 3.33?

    I read somewhere that the chipset in the 2009 macpro4,1 lacked some sort of stepping feature that the W3680 uses..
  2. Inconsequential macrumors 68000

    Sep 12, 2007
    Works fine.

    Infact, i've just done it.

    6 cores @ 3.46GHz (Turboboost) is great.

    Fans need to run quite fast to keep it in the highest performance state tho.
  3. WardC macrumors 68030


    Oct 17, 2007
    Fort Worth, TX
    Before this Flash update was available, the only way to upgrade a 2009 machine to a Westmere (6-core) was to do a Motherboard swap to a 2010 board (backplane board), which can be done and works. I have a friend who did this.

    The reason for this was that that the firmware that supports the B1 stepping is only on the 2010 boards.

    The Flash tool now available will change your 2009 board (which by default only supports D0 stepping/Nehalem) to support the Westmere B1 stepping which is used by the 6-core processors.

    So, yes, by applying the flash upgrade (flashes the firmware to your backplane board), and then dropping in your Westmere 6-core W3680 or W3690 processor, and of course carefully putting on your heatsink with thermal paste, you should have a working 6-core Westmere machine.
  4. garymadison macrumors newbie

    Mar 12, 2012


    The computer I'm thinking about is a Mac Pro 2.66GHz Two Dual Core Xeon. - Apple Computer MA356LL/A.
    Will this computer upgrade to Hex?

    Thanks everybody

  5. ashman70 macrumors 6502a

    Dec 20, 2010
    No, your Mac Pro 1,1 is not capable of upgrading to 'Hex', however you can upgrade to two quad core processors, there is a thread in here all about doing that. Only a Mac Pro 4,1 from 2009 is capable of the 'Hex' upgrade.
  6. wonderspark macrumors 68040


    Feb 4, 2010
    My Mac Pro is from 2009, was a 4,1 with the 3.33GHz Quad, now it's got the 5,1 firmware with W3680 6-core 3.33GHz CPU. No heat issues whatsoever no matter how long I render HD video. Stays cool when not working hard.

    I have the firmware switching application, and it lets you go back and forth 4,1 <--> 5,1 at will, so you can always go back if you want.
  7. CaptainChunk, Mar 13, 2012
    Last edited: Mar 13, 2012

    CaptainChunk macrumors 68020


    Apr 16, 2008
    Phoenix, AZ
    Nope. 1,1 Mac Pros use different architecture and will only work with 5100 and 5300 series chips.

    The fastest chip that machine will accept is the Clovertown X5365 (3.0GHz quad-core). You can find these chips for under $300 each online. Just make sure both CPUs are the same eSpec/stepping if you decide to upgrade (there are two revisions of the X5365, for example).
  8. auhlixer thread starter macrumors regular

    Apr 15, 2006
    Philadelphia, PA
  9. AppleDroid macrumors 6502a

    Apr 10, 2011
    I am so tempted to do this with my 4,1 Quad but I have a history of frying things in computers. (As in bad thermal paste application = CPU died after 2yrs).
  10. garymadison macrumors newbie

    Mar 12, 2012
    Mac 1,1 Upgrade

    Thanks everybody, may just wait for awhile before a purchase.

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