Most power efficient (non-Atom) CPU?

I am going to build my first home server, and am looking for the most power efficient CPU. I haven't found direct comparisons between cheapest (presumably also better power efficient) Intel and AMD CPUs.
Any info will be appreciated.
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  1. yugo23 said:
    I am going to build my first home server, and am looking for the most power efficient CPU. I haven't found direct comparisons between cheapest (presumably also better power efficient) Intel and AMD CPUs.
    Any info will be appreciated.


    This might help you compare efficiency

    Intel : http://www.techarp.com/showarticle.aspx?artno=354&pgno=6

    AMD: http://www.techarp.com/showarticle.aspx?artno=354&pgno=2

    As a rule of thumb, the lower the numbers for TDP, Voltage, Maximum current and Fabrication process - in (nm) - the more efficient a processor is
  2. heat mainly depends on amount of cores, voltage (which affect speed) and manufacturing process. while both of those are the coolest offerings from amd and intel, they are also pretty much the worse. heres more modern ones, (although if all you care about is power efficiency, those win)

    http://www.newegg.com/Product/Product.aspx?Item=N82E16819115222

    http://www.newegg.com/Product/Product.aspx?Item=N82E16819103681
  3. Thanks for the advices. I see that also E3200 is mentioned as very efficient CPU.

    I am still trying to find exact figures - LE-140 vs Intel counterpart. Which one is better.
  4. the LE-140 is the worst modern amd cpu, therefore pick the worst intel cpu more or less. it is a much better buy to buy one of their better cpus, while retaining low power consumption.
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