Base Mac Pro w/ Intel Core i5?

Discussion in 'Mac Pro' started by Quad 2.5 G5 =), Sep 8, 2009.

  1. Quad 2.5 G5 =) macrumors 6502

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    #1
    Today, Intel introduced the first Core i5 processor that is on the LGA 1156 processor socket. This processor has hyperthreading disabled, and runs at 2.66 GHz with 4 cores.
    Will :apple: possibly use this processor as a base configuration in the MP, or possibly a high end configuration in the iMac?
     
  2. Transporteur macrumors 68030

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    #2
    Replacing the XEON i7 with a stock i5 without HT? Won't happen.

    The Core2Duo processors the iMac uses, have 35W TDP, the i5 has 82W. I don't think that the iMacs can handle that.
     
  3. milk242 macrumors 6502a

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    #3
    xeon and i7 are different cpus... I think Apple will always rely on workstation processors for their Mac Pros and Xserve products. I just don't see that ever changing unless intel drops xeon from their roadmap (never going to happen).
     
  4. 300D macrumors 65816

    300D

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    #4
    This idea drops back to the imaginary "xMac" that will never exist.
     
  5. Transporteur macrumors 68030

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    #5
    No they are not.
     
  6. capitanbuzo macrumors 65816

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    #6
    Oh yes they are.
     
  7. 300D macrumors 65816

    300D

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    #7
    Only to those that don't know the differences.
     
  8. Transporteur macrumors 68030

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    #8
    Both the i7 and the Nehalem Xeon are based on the same technology.

    The XEON UP models are besides from the ECC support pretty much identical.
    The XEON MP added support for multiple units, but nevertheless it's the same core.

    That's why I personally would not say that they are 'different cpus'.
     
  9. capitanbuzo macrumors 65816

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    #9
    But they are.
     
  10. goMac macrumors 603

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    #10
    Yeah, those aren't the only differences...
     
  11. alphaod macrumors Core

    alphaod

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    #11
    No HyperThreading or the 3rd memory channel? I don't think Apple would downgrade like that.
     
  12. nanofrog macrumors G4

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    May 6, 2008
    #12
    Core i5 = LGA1156
    Core i7 = LGA1366

    So they're not physically compatible, though they're both based on the same architecture.
     
  13. Dr.Pants macrumors 65816

    Dr.Pants

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    Jan 8, 2009
    #13
    Well, wasn't LGA 1156 supposed to deliver hexa-core processors? Maybe they're just not out yet....

    Still, on The Egg, of the three 1156 CPUs, all three are Lynnfield but only one is labeled as "i5". What happens to make this processor different from its "i7" cousins that inhabit the same socket? Is it just marketing?
     
  14. Genghis Khan macrumors 65816

    Genghis Khan

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    #14
    lol...best thread ever

    btw...the 'i7' and Xeons in the Mac Pro are both subsets of the family of 'Nehalem' processors

    so while not identical, they're damn similar
     
  15. lixuelai macrumors 6502a

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    Oct 29, 2008
    #15
    i7 and Xeon are just branding. Current gen lower end Xeon processor are identical to i7 just named differently.
     
  16. chaosbunny macrumors 68000

    chaosbunny

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    #16
    No it's not. :D
     
  17. AppleWorking macrumors regular

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    Jan 20, 2009
    #17
    Yes, it is. :p ;)
     
  18. Umbongo macrumors 601

    Umbongo

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    #18
    In addition to lower speeds Core i5 does not have the hyperthreading or VT-d enabled.
     
  19. goMac macrumors 603

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    #19
    The i7 doesn't support SMP or extended page tables, among other things.

    It's NOT just branding.
     
  20. capitanbuzo macrumors 65816

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    #20
    Gotta agree with you there.
     
  21. TheStrudel macrumors 65816

    TheStrudel

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    #21
    I was given to understand that Xeon had support for ECC memory (among other things) and non-Xeons did not, making it more than just naming.
     
  22. J the Ninja macrumors 68000

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    #22
    IIRC, i7's support ECC in hardware, it's just turned off since it's more of a hindrance than a benefit in a gaming machine.
     
  23. Quad 2.5 G5 =) thread starter macrumors 6502

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    Mar 29, 2009
    #23
    Also, I do remember that the i5 is basically a i7 without HT (and a bunch of different things). The i7 is basically a Xeon (with features added and removed),
    which makes the Core i5 a distant relative of the Xeon.
     
  24. nanofrog macrumors G4

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    May 6, 2008
    #24
    i5-750:
    LGA1156
    Turbo Boost = Yes
    Hyper Threading = No
    Vt-d (virtualization support) = No
    Memory = DDR3 Dual Channel
    ECC = No
    Bus Communication = DMI, not QPI
    TDP = 95W

    Source.
     
  25. Quad 2.5 G5 =) thread starter macrumors 6502

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    Mar 29, 2009
    #25
    That much removed/changed? More than I thought... the VT is actually a "yes" as it has a checkmark on it.
     

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