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    Intel Sandy Bridge - Much Better?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Jack, Jan 23, 2011.

  1. Jack

    Jack Guest

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    In the battle of the mobile processor units, just how much better is the new Sandy Bridge lineup.
    Comparing:
    Intel Core i7-720qm... and the
    Intel Core i7-2630qm.
    Are there any speed or cache advantages, or only integrated graphics.
     
    Jack, Jan 23, 2011
    #1
  2. Seanwhat

    Seanwhat Notebook Evangelist

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    yeah they're pretty quick. from various sources i've seen estimates of about 15-20% increase in overall like for like performance (eg. 720qm vs 2720qm), and about a 100% increase in the gpu. decent improvements in heat and power usage should also be noted.

    I normally like to start here:
    Code: 
    http://www.notebookcheck.net/Mobile-Processors-Benchmarklist.2436.0.html
     
    Seanwhat, Jan 23, 2011
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  3. Jack

    Jack Guest

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    ok, thats good.
    Do you know anything about battery change?
     
    Jack, Jan 23, 2011
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  4. Seanwhat

    Seanwhat Notebook Evangelist

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    .I do not.
     
    Seanwhat, Jan 23, 2011
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  5. Althernai

    Althernai Notebook Virtuoso

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    15-20% clock-for-clock. The actual difference between the 2720QM and 720QM is much larger than that because the 2720QM runs at a much higher clock speed -- it's more like 50-100% depending on the number of threads and cooling of the Sandy Bridge machine.

    Yes. Sandy Bridge gets about twice as much battery life as Clarksfield (the CPU family the 720QM is part of). The 2630QM is the weakest of the Sandy Bridge quad cores, but it's still a whole lot better than the 720QM in terms of both performance and battery life.
     
    Althernai, Jan 23, 2011
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  6. Jack

    Jack Guest

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    Ok.
    And, wow.
    Cinebench comparison:
    720qm vs 2630qm
    8773.7 vs 13325.7!
    That is 65% better!
     
    Jack, Jan 23, 2011
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  7. Botsu

    Botsu Notebook Evangelist

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    10% faster at the same frequency seems to be the average, but it differs greatly depending on the task so it doesn't mean a lot. The important thing is that they reach much higher speeds and bring incredible power saving gains.

    Where a i7-740qm tops at 1.86 with 4 active cores its sandy bridge counterpart tops at 3.0ghz for a short while and would slowly stabilize at 2.5 or something like that. So the gain is generally huge.
     
    Botsu, Jan 23, 2011
    #7