Difference between Penrynn and Core 2 DUO?

Discussion in 'MacBook Pro' started by legaleye3000, Jan 27, 2008.

  1. legaleye3000 macrumors 65816

    Jul 31, 2007
    What's the difference between the current processors and the new penrynn?

  2. wildwobby macrumors member

    Nov 3, 2007
    The penryn is a core 2 duo.

    It uses newer technology than the current merom processors. It's main difference is the fact that the transistors are only 45nm long. This makes them more power efficient and powerful.

    Performance wise, it also includes the new SSE4.1 instructions which makes things like encoding go about 40% faster. Other than that, its expected these processors will be around 7-10% faster Ghz for Ghz.
  3. legaleye3000 thread starter macrumors 65816

    Jul 31, 2007
    Oh ok- So benefits are longer battery times and more speed?

    Is the speed increase significant or minor? Same with battery time?
  4. Ryox macrumors 6502a


    Oct 27, 2007
    Penryn Processors will be branded as "Core2Duo" when they are released
    The main difference between the processors are the size.
    The new penryn processors are smaller in physical size than current ones found in the laptops (45nm). This means they will run faster, cooler and consume less power then current models
  5. blurb23 macrumors 6502a

    Feb 25, 2007
    Penryn is still a Core 2 Duo, with a die shrink. The shrink will allow for about a 10-15% performance gain, along with lower power consumption and heat output.

    For reference, the current (mobile) Core 2 Duo's are known as Merom.
  6. wildwobby macrumors member

    Nov 3, 2007
    Your wrong. the 45nm refers to the transistor size, not the processor itself. 45nm is VERY small. 1x10^-9 m. The physical size of the merom and penryn are identical.

    The battery significance has been reported as quite modest. About 7% increase in overall time. However, the processors aren't the only things that take up a lot of power. The display, hard drive, and superdrive all take up a lot too. They are constantly being made more energy efficient. The screens for instance of the 15" MBPs are LED backlit. It is expected the 17" screens will get this treatment with an update too.
  7. gazfocus macrumors 68000


    Jan 3, 2008
    Liverpool, UK
    The Penryn speeds are as follows:

    X9000 2.8 GHz, 44W, 6MB Cache

    T9500 2.6 GHz, 35W, 6MB Cache

    T9300 2.5 GHz, 35W, 6MB Cache

    T8300 2.4 GHz, 35W, 3MB Cache

    T8100 2.1 GHz, 35W, 3MB Cache

    The rumoured processors for the Macbook Pro's are the T9300 2.5GHz and the T9500 2.6GHz but I don't think this will offer a large enough gap for the different prices of the Macbook pro's.

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