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    Are all dual-core processors x64?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by grok, May 30, 2008.

  1. grok

    grok Notebook Enthusiast

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    I don't personally own a dual core but I would very much like to know if all dual core processors are x86 x64 as opposed to i386 that I use now. I want to avoid the headaches that sometimes are involved with x64 architecture and linux.

    Thanks.
     
    grok, May 30, 2008
    #1
  2. Budding

    Budding Notebook Virtuoso

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    Old dual cores, such as the Intel Core Duo series, are not 64bit compatible. All new dual cores, such as the Intel Core 2 Duo series, are. If you buy a decently priced (as in not some yard sale machine for $100) computer now, chances are it will be 64bit compatible.
     
    Budding, May 30, 2008
    #2
  3. TommyB0y

    TommyB0y Notebook Deity

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    All AMD dual core cpus are 64-bit
     
    TommyB0y, May 30, 2008
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  4. Gophn

    Gophn NBR Resident Assistant

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    The only dual cores that are NOT x64 are:
    - Pentium Dual-Core (mobile).. last generation
    - Core Duo
     
    Gophn, May 30, 2008
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  5. R4000

    R4000 Notebook Virtuoso

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    The latest Merom Pentium Dual-Cores are 64bit (ie; T2370, T2390). The older Yonahs were not.........
     
    R4000, May 30, 2008
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  6. NJoy

    NJoy Няшka

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    t2330 is 64bit compatible too=)

    even the last generation of Celerons do, as they are also based on Merom core
     
    NJoy, May 30, 2008
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  7. Jamaicanyouth

    Jamaicanyouth Notebook Evangelist

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    Pentium D is x64 capable.
     
    Jamaicanyouth, May 31, 2008
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  8. unknowntt

    unknowntt Notebook Evangelist

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    Is the pentium D really x64 capable??? Never knew that...
     
    unknowntt, May 31, 2008
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  9. powerpack

    powerpack Notebook Prophet

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    Well now I am confused!
     
    powerpack, May 31, 2008
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  10. grok

    grok Notebook Enthusiast

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    I guess the next question is -- can x64 machines use x86 operating systems? Or is that inadvisable. What are some of the ramifications of using x86 on an x64 machine?

    Thanks in advance.
     
    grok, May 31, 2008
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  11. Bog

    Bog Losing it...

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    64-bit CPUs

    AMD;
    Athlon 64
    Turion 64
    Turion 64 X2
    Phenom

    Note that Semprons are not 64-bit.

    Intel;
    high-tier Pentium 4 (ex, P4 630)
    Pentium D (essentially two P4s slapped together)
    Core 2 Duo and all Merom platforms
    Core 2 Quad (or whatever silly name Intel came up with, codename Kentsfield)

    Note that the Core Duo (codename Yonah Platform) is not 64-bit capable.

    This list does not include server CPUs, of course.

    If I've missed any or made a mistake, please feel free to point them out.
     
    Bog, May 31, 2008
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  12. R4000

    R4000 Notebook Virtuoso

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    Sempron LE-1150,1250 & 1300 are 64bit (but they are also single core).
     
    R4000, May 31, 2008
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  13. Budding

    Budding Notebook Virtuoso

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    32bit OSes run fine on a 64bit CPU. The only loss is that you lose the full capability of the 64bit CPU.

    And it is a common misconception, but Pentium Ds are 64bit compatible. All Pentium Ds support EM64, since they are based on the later Pentium 4s which also support EM64.
     
    Budding, May 31, 2008
    #13