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    XPS 15 9550 running extremely hot

    Discussion in 'Dell XPS and Studio XPS' started by antik, Apr 27, 2016.

  1. antik

    antik Notebook Consultant

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    Hey all,

    I've noticed my XPS 15 runs extremely hot under load. During Prime95 Small FFT's, CPU will hit 90 degrees in under a couple of minutes. If I set the Core Offset voltage on the CPU to -200mV, it will hit 70-75 degrees within a few minutes of Prime95...

    Would you guys start with a repaste?
     
    antik, Apr 27, 2016
    #1
  2. Bommel87

    Bommel87 Notebook Consultant

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    Repaste seems worth it. PS: You are pretty lucky to be able to run at -200mV! Mine crashed at -190mV in Prime. Went down to -175mV.
     
    Bommel87, Apr 27, 2016
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  3. antik

    antik Notebook Consultant

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    Repaste is definitely going to happen but I didn't think those temps would be achievable in such a short load even with crappy paste, so I'm worried it's something else.

    What temps do you get stock settings and undervolted during load?
     
    antik, Apr 27, 2016
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  4. GoNz0

    GoNz0 Notebook Virtuoso

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    This is a laptop, not designed to run benchmarks so you are getting exactly what should happen!
     
    GoNz0, Apr 27, 2016
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  5. antik

    antik Notebook Consultant

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    Well according to what I've seen on this forum, one should be able to run Prime95 for 20 minutes without hitting 80 degrees on these machines...
     
    antik, Apr 27, 2016
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  6. GoNz0

    GoNz0 Notebook Virtuoso

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    Can you confirm they ran small FFT's or a standard test as small FFT's will push it well beyond it's limits as I doubt anything real world will punish a CPU like that?
     
    GoNz0, Apr 27, 2016
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  7. antik

    antik Notebook Consultant

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    Yes, confirmed they ran small FFT's: http://forum.notebookreview.com/thr...rature-observations-undervolt-repaste.785963/

    Also I just tried Blend instead of Smalll FFT's and 2 of 4 cores still hit over 90 degrees after 90 seconds...
     
    Last edited: Apr 27, 2016
    antik, Apr 27, 2016
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  8. GoNz0

    GoNz0 Notebook Virtuoso

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    I banged straight up to 92 until the fans kicked in, at 4000rpm I get about 83 with a repaste only. so yours look fine.

    Also every CPU will benchmark at different temps, and that is before you start to account for ambient temps etc.
     
    GoNz0, Apr 27, 2016
    #8