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    XPS 15 - Thermal difference between i5-6300 and i7-6700?

    Discussion in 'Dell XPS and Studio XPS' started by rosemeyer2, Mar 12, 2016.

  1. rosemeyer2

    rosemeyer2 Newbie

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    Hi, I am going to order a xps 15, but wonder would difference it would make between the both cpu choices i5 and i7 from a thermal and fan perspective? I am looking for a quite machine.

    Regards,
    Rudolf
     
    rosemeyer2, Mar 12, 2016
    #1
  2. mazzy80

    mazzy80 Notebook Enthusiast

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    nothing.... same TDP, i7 are just higher binner i5 on the mobile world... with slight L3 cache size
     
    mazzy80, Mar 12, 2016
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  3. Eason

    Eason Notebook Virtuoso

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    Hyperthreading does create more heat when used, as do the higher frequencies. The i5 runs pretty cool for me after repasting, so you might not need to worry about heat either way. For games, the performance is identical.
     
    Eason, Mar 12, 2016
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  4. bennni

    bennni Notebook Evangelist

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    Edited due to wrong info - probably won't make a gigantic amount of difference to heat. There's about 300MHz difference and hyperthreading in the i7 - not a huge deal. Unless the i7 was close in price to the i5 and I ran a lot of hyperthreading optimised apps, I'd be inclined to go for the i5 since it's a quad core and the clock speed isn't far from the i7.
     
    Last edited: Mar 12, 2016
    bennni, Mar 12, 2016
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  5. kent1146

    kent1146 Notebook Prophet

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    Just buy the faster CPU. I wouldn't worry about heat.

    Mazzy mentioned that both CPUs have the same TDP (15W), which is true. But TDP is a rating of the maximum heat generated.... Not the actual heat generated at any given time.

    Technically, Eason is correct. Faster CPUs generate more heat because of their higher clock speed (even if the CPUs come from the same family). But that faster CPU will also get work done faster than a slower CPU, which means it doesn't need to be at high clock speed for a very long time.

    In reality, the difference we are talking about here is so small that you would never notice a difference in fan noise. In order for it to make a difference in fan noise, you'd need to compare two processors that have dramatically different heat generation behaviors; and not the small difference that were talking about between a Core i5 / o7 in the same CPU family. So Just buy the CPU you want, and rest assured that you'll never notice a difference in terms of fan noise.

    Sent from my XT1575 using Tapatalk
     
    kent1146, Mar 12, 2016
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  6. Eason

    Eason Notebook Virtuoso

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    Indeed. This is the first real quad-core i5 for mobile. Iirc they used to be dual core with hyperthreading, like a u-series? So they're like the desktop counterparts more
     
    Eason, Mar 12, 2016
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