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Haswell Refresh vs Ivy Bridge power consumption

Hi, my old ivy i3 died and this new i5 4460 just came in today.
I was wondering if anyone has any real info on the power consumption regarding the two technologies, in full load and no overclocking of course.
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More about haswell refresh ivy bridge power consumption
  1. i'm asking about power consumption rookie, not TDP
  2. Best answer
    rockie_ said:


    That's the TDP, not it's power consumption. Consumption on idle for the i5 4460 should be around 55-61 watts depending on the chip, and around 156 watts under full load. It being a non-K series CPU means that there will be no overclocking anyway, so that 156W maximum should account for turbo speeds as well.


    EDIT: I shall correct myself. The i5 4460 consumes just 44W on average at idle, and 122w at full load running Linpack, as detailed here:

    http://www.xbitlabs.com/articles/cpu/display/intel-haswell-refresh_6.html

    FURTHER EDIT: Here are the details for the Ivy Bridge counterparts, from tests conducted by the same people as the previous link:

    http://www.xbitlabs.com/articles/cpu/display/core-i5-ivy-bridge_9.html
  3. the higher the TDP the higher the power consunption. as true quad cores i5 have higher tdp, thus power consumption compated to dual cores i3
  4. Following on from my previous post it would seem that, for non-K series CPU's, the only real difference between the Ivy Bridge and Haswell i5's is that the Haswells use less power at idle speeds than their forebears. To reach this conclusion I have compared the i5 3550 and the i5 4460 as I believe they are the two closest CPU's from each range in terms of speed and TDP.

    EDIT: For the sake of completeness, here are the specifications from the ivy bridge i3 range:

    http://www.xbitlabs.com/articles/cpu/display/core-i3-ivy-bridge_7.html#sect0

    As you can see, the i3's all consume between 60-62W in idle and 84-87W under full load. Comparatively, the i5 is just as energy efficient as the i3, given that it contains two more physical cores than the i3.
  5. AdmiralDonut said:
    rockie_ said:


    That's the TDP, not it's power consumption. Consumption on idle for the i5 4460 should be around 55-61 watts depending on the chip, and around 156 watts under full load. It being a non-K series CPU means that there will be no overclocking anyway, so that 156W maximum should account for turbo speeds as well.


    EDIT: I shall correct myself. The i5 4460 consumes just 44W on average at idle, and 122w at full load running Linpack, as detailed here:

    http://www.xbitlabs.com/articles/cpu/display/intel-haswell-refresh_6.html

    FURTHER EDIT: Here are the details for the Ivy Bridge counterparts, from tests conducted by the same people as the previous link:

    http://www.xbitlabs.com/articles/cpu/display/core-i5-ivy-bridge_9.html


    You re messing up the CPU and the system consumption
  6. thanks AdmiralDonut, excellent reads
  7. rockie_ said:
    AdmiralDonut said:
    rockie_ said:


    That's the TDP, not it's power consumption. Consumption on idle for the i5 4460 should be around 55-61 watts depending on the chip, and around 156 watts under full load. It being a non-K series CPU means that there will be no overclocking anyway, so that 156W maximum should account for turbo speeds as well.


    EDIT: I shall correct myself. The i5 4460 consumes just 44W on average at idle, and 122w at full load running Linpack, as detailed here:

    http://www.xbitlabs.com/articles/cpu/display/intel-haswell-refresh_6.html

    FURTHER EDIT: Here are the details for the Ivy Bridge counterparts, from tests conducted by the same people as the previous link:

    http://www.xbitlabs.com/articles/cpu/display/core-i5-ivy-bridge_9.html


    You re messing up the CPU and the system consumption


    Which is still more of an accurate representation than the TDP.
  8. AdmiralDonut said:
    rockie_ said:
    AdmiralDonut said:
    rockie_ said:


    That's the TDP, not it's power consumption. Consumption on idle for the i5 4460 should be around 55-61 watts depending on the chip, and around 156 watts under full load. It being a non-K series CPU means that there will be no overclocking anyway, so that 156W maximum should account for turbo speeds as well.


    EDIT: I shall correct myself. The i5 4460 consumes just 44W on average at idle, and 122w at full load running Linpack, as detailed here:

    http://www.xbitlabs.com/articles/cpu/display/intel-haswell-refresh_6.html

    FURTHER EDIT: Here are the details for the Ivy Bridge counterparts, from tests conducted by the same people as the previous link:

    http://www.xbitlabs.com/articles/cpu/display/core-i5-ivy-bridge_9.html


    You re messing up the CPU and the system consumption


    Which is still more of an accurate representation than the TDP.


    Disagree , different video cards different consumption .... my i3 mobile is idling at 5W .
  9. rockie_ said:
    AdmiralDonut said:
    rockie_ said:
    AdmiralDonut said:
    rockie_ said:


    That's the TDP, not it's power consumption. Consumption on idle for the i5 4460 should be around 55-61 watts depending on the chip, and around 156 watts under full load. It being a non-K series CPU means that there will be no overclocking anyway, so that 156W maximum should account for turbo speeds as well.


    EDIT: I shall correct myself. The i5 4460 consumes just 44W on average at idle, and 122w at full load running Linpack, as detailed here:

    http://www.xbitlabs.com/articles/cpu/display/intel-haswell-refresh_6.html

    FURTHER EDIT: Here are the details for the Ivy Bridge counterparts, from tests conducted by the same people as the previous link:

    http://www.xbitlabs.com/articles/cpu/display/core-i5-ivy-bridge_9.html


    You re messing up the CPU and the system consumption


    Which is still more of an accurate representation than the TDP.


    Disagree , different video cards different consumption .... my i3 mobile is idling at 5W .


    Does TDP tell you the idle wattage now? Fascinating.
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