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Thread: Dual-core vs. Core Duo?

  1. #1
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    Question Dual-core vs. Core Duo?

    Hi Guys,

    I am trying to find the information on the difference between these two CPUs, but could not locate a proper article on it yet.

    What I have so far is that the Intel Dual-core CPU is called the 'D'-series which has two full processing cores, while the Duo-core has two 'execution' cores.

    Can anyone perhaps point me in the right direction or explain shortly in standard English what the difference is?

    It seems like the Core 2 Duo is the newer/faster type?

    Thanks a lot.
    Sometimes you just have to take the leap, and build your wings on the way down.

  2. #2
    Super Grandmaster killadoob's Avatar
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    i wouldm like to know as well
    i see the new laptops are core solo
    core duo
    are these conroe chips?

  3. #3
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    Pentium D is a dual core version of the Pentium 4 (basicaly two P4's stuck together)

    Core Solo, basically only the new name for Pentium M (so they're not Conroe/Merom)

    Core Duo is the dual core version of Core Solo (so it's like two Core Solo's in one)

    Core 2 Duo is the new genaration chips, this is what Conroe (for Desktops) and Merom (for Notebooks) will be called.

    'Two execution cores' is just a fancy way of saying dual core.
    insomnia FTW!

  4. #4

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    Core 2 Duo = Conroe

    Follow the review links at the top of this Slashdot article:
    http://hardware.slashdot.org/article.../07/17/0612202

  5. #5

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    Khyron : In a nutshell, the Core Duo is for laptops and similar devices (Devices that require lower heat). The Core 2 Duo is the Desktop version

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    Quote Originally Posted by JStrike
    Khyron : In a nutshell, the Core Duo is for laptops and similar devices (Devices that require lower heat). The Core 2 Duo is the Desktop version
    But there's also going to be a Core 2 Duo for notebooks (Merom), like I said, the current Core Duo is just a 65nm dual core version of the Pentium M
    insomnia FTW!

  7. #7
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    Quote Originally Posted by JStrike
    Khyron : In a nutshell, the Core Duo is for laptops and similar devices (Devices that require lower heat). The Core 2 Duo is the Desktop version
    That is a bit incorrect. Yes Pentium M chips are used mostly in laptops, but there are many aplicationes for Pentium M chips. HTPC is an example. at the end of the day ther is nothing stopping you from putting a Pentium M in your desktop...

  8. #8

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    Quote Originally Posted by mic_y
    at the end of the day ther is nothing stopping you from putting a Pentium M in your desktop...
    Except for trying to find a supporting motherboard. Lets's face it, there aren't many desktop boards that support pentium M.

  9. #9
    Super Grandmaster supersunbird's Avatar
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    Core 2 Duo and Core Duo are just new brand names (instead of Pentium) of a series of dual core processors.

    Pentium D: Dual cores that are basically two stuck together Pentium 4's

    Core Duo: Dual core processor with Pentium M heritage

    Core 2 Duo: Dual core processor taking stuff from Netburst and Pentium M and AMD and some new stuff

    X2: Dual core from AMD


    Yeah, Core 2 Duo is newer and is way faster than a Pentium D...
    Quote Originally Posted by saor View Post
    saor is a dumbass

  10. #10
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    If you wanna read the spec...

    The IntelŪ Core Duo processor is the dual-core version of the Intel PentiumŪ M processor for notebooks. It is part of the new mobile technology offering from Intel code-named Napa. Unlike Intel's first dual-core designs for desktop PCs, Intel Core Duo is a much more integrated design that shares storage and power management resources within the chip. Here is a quick overview of this new CPU:

    Intel's first dual-core optimized CPU
    667 MHz front-side bus
    Built on new 65nm technology
    Two mobile optimized execution cores in a single processor
    Parallel threads executed on separate cores with dedicated CPU resources


    Intel will also implement a host of new features into the new Intel Core Duo chip.

    Intel Smart Cache - This is an enhanced version of handling the L2 cache from the previous dual-core desktop processors that allows both cores to access the same L2 cache.
    Intel Dynamic Power Coordination - This feature coordinates the power states between the two cores, enabling them to each individually step down activity as required.
    Intel Digital Media Boost - Digital Media Boost provides enhancements to Gaming, Video Streaming, Digital Music and Photography, as well as other multimedia applications.
    Intel Advanced Thermal Manager - New thermal sensors and management technology allows for enhanced accuracy with dual-core optimized thermal management.
    Intel Virtualization Technology - This delivers a hardware-assisted robust virtualization and manageability solution.

    L2 Cache
    The desktop version dual-core Pentium D processor uses separate 1MB cache memory banks dedicated to each core. In the Intel Core Duo processor, a single 2MB cache memory bank is available to both cores, reducing the chance that data will have to leave the chip to be temporarily stored in a system's main memory bank. This means that one core can store a piece of data in the cache that might be needed later by the other core, and the other core can access that data without having to leave the chip. The larger amount of storage allows Intel Core Duo's cores to spend less time navigating through the front-side bus and more time executing instructions, which will dramatically improve performance.

    The shared cache design also allows Intel to eliminate some of the disadvantages of its front-side bus design, which many analysts see as a bottleneck in the dual-core era. The front-side bus is the connection between the processor and the main system memory via a chipset. On Intel's chips, this interface is located on the chipset, farther away from the CPU. Intel plans eventually to move to a different design, but in the meantime it has been raising the speed at which its buses move data in order to cope with the increased activity of two processor cores. Intel Core Duo's two cores will share a single front-side bus running at 667MHz.

    Dual-Core processors provide a greater advantage over Hyper-Threading. In Hyper-Threading, parallel threads are executed on a single core using shared resources. With the Dual-Core solution, parallel threads are executed on separate cores with dedicated resources.

    Intel Core Duo will use sophisticated power management techniques to make sure that each core is only drawing as much power as it needs to process its instructions. The processor can monitor the application activity passing through each core and allocate power as needed between the cores, reducing power consumption during idle moments. As a result, the battery life of notebooks with the Intel Core Duo and the rest of the Napa platform should exceed that of the current generation of Intel's Centrino technology.

    Not so short an explanation after all...
    Information from my study notes - just completed a certification exam on the technology used in Dell's XPS series notebooks.
    Eish!

  11. #11

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    ok, this just made me more confused

    what is better/ faster Pentium M, or Centrino
    this is Laptop, assuming the same ghz.

  12. #12

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    centrino is a brand name for a bunch of components, not a cpu name, so you cant say "which is faste,r pentium m or centrino"

    intel, yes you spent a lot of $$$$ marketing the centrino brand, now spend some more to get rid of the confusion

  13. #13
    Super Grandmaster supersunbird's Avatar
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    A Pentium M is a part of Centrino (long with a specific mothebaord chipset and wireless chipset).

    Its like a McDonalds McMeal, you can buy the things seperate, but it all goes together nicely in one product...
    Quote Originally Posted by saor View Post
    saor is a dumbass

  14. #14
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    Quote Originally Posted by DAE_JA_VOO
    Except for trying to find a supporting motherboard. Lets's face it, there aren't many desktop boards that support pentium M.
    Ok a year ago yes there were problems finding a motherboard. Today there are no such problems. There are multiple desktop baords avaliable from pretty much any manufacturer that support the Pentium M.

  15. #15
    Super Grandmaster spiderz's Avatar
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    Game Over? Core 2 Duo Knocks Out Athlon 64
    http://www.tomshardware.com/2006/07/...out_athlon_64/

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