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    Haswell 4700 vs 4810?

    Discussion in 'Sager and Clevo' started by SpinalTarp, Mar 30, 2014.

  1. SpinalTarp

    SpinalTarp Notebook Consultant

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    Sager seems to be offering the 4810 for only $35 more. Will the 4810 be much hotter than the 4700? Is there a refresh for the 4700?
     
    SpinalTarp, Mar 30, 2014
    #1
  2. n=1

    n=1 YEAH SCIENCE!

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    No refresh for 4700, and for $35 getting the 4810 is a no-brainer.
     
    n=1, Mar 30, 2014
    #2
  3. Support.3@XOTIC PC

    Support.3@XOTIC PC Company Representative

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    Definitely jump on the deal while they have it going on. No heat issues about them.
     
    Support.3@XOTIC PC, Mar 30, 2014
    #3
  4. n=1

    n=1 YEAH SCIENCE!

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    Posted this in the AW forums, but might as well bring this up here as well since it might be relevant...

    All the MQ chips have a rated TDP of 47W, whereas the MX is rated 10W higher at 57W. On going from the 4700MQ to the 4900MQ, the base and turbo clocks increase by 400 MHz, but the TDP stays the same. Yet another +200 MHz with the MX chips, and the TDP goes up by 10W.

    If we calculate W per GHz for the base clock, it turns out that the 4930MX is actually just barely better than the 4700MQ!

    4930MX: 57W / 3GHz = 19W per GHz
    4900MQ: 47W / 2.8GHz = 16.79W per GHz
    4800MQ: 47W / 2.7 GHz = 17.41W per GHz
    4700MQ: 47W / 2.4 GHz = 19.58W per GHz

    Obviously I'm not sure if such calculations have any validity in the context of turbo boost/overclocked speeds (or any validity at all), but this does seem to highlight that within the MQ series of CPUs, the faster clocked ones would appear to be more efficient.
     
    n=1, Mar 31, 2014
    #4
  5. dennis96411

    dennis96411 Notebook Consultant

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    I believe you did your calculations backward. It should be clock speed divided by power consumption.

    Sent from my SAMSUNG-SGH-T989
     
    dennis96411, Mar 31, 2014
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  6. Benchmade 42

    Benchmade 42 Titanium

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    How come the review of the W230SS by notebookcheck shows temps of 100c?
     
    Benchmade 42, Mar 31, 2014
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  7. divideoverflow

    divideoverflow Notebook Consultant

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    Reviews of laptops with the 4700 are showing the same temps. I'd go for the 4810, so if it does throttle, you still get better performance.

    The W230SS is throttling due to a single fan, and small case size. The haswell temps are warm regardless of 4700,4810,4910. So the benchmarked gains are only slightly higher for the 4810 over the 4700 in the small 13.3", size.

    The larger form factors are definitely worth it, and the P series showed no actual throttling, although boost would drop when running prime 95, which is an unrealistic torture test anyway.

    For $35, always get the better CPU. You can under clock if the temps really are too high...
     
    divideoverflow, Mar 31, 2014
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  8. Meaker@Sager

    Meaker@Sager Company Representative

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    The silicon quality is pretty similar but the 4800MQ has higher multipliers open to it.

    Both pushed to the max will go down to similar frequencies unless you adjust the TDP in which case the 4810qm will be able to get significantly ahead.
     
    Meaker@Sager, Apr 1, 2014
    #8