XPS 15 9560 - CPU stuck at 1.9 Ghz

Discussion in 'Dell XPS and Studio XPS' started by Vlatko, Dec 4, 2017.

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  1. Vlatko

    Vlatko Notebook Enthusiast

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    Me again with problems with my XPS. :(

    It seems my CPU frequency is stuck at 1.8 Ghz. I try the Throttlestop TS Bench and it will not go over 1.9 Ghz. [​IMG]

    Under power settings Maximum frequency is set to 100%. Latest BIOS, all the latest drivers. The only thing which drives it up to 3.4 Ghz is clicking the Set Multiplier in Throttlestop and setting it to 38 T. I know I can run Throttlestop all the time and set it to run at boot but I'd rather FIX this properly.

    I saw the supposed fix was to disconnect the battery for 15 seconds but I don't have such small torx screws and I'd rather not pry open such an expensive and brand new notebook. Any other ideas?

    Thanks!
     
  2. don_svetlio

    don_svetlio In the Pipe, Five by Five.

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  3. Maleko48

    Maleko48 Notebook Evangelist

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    Here is the in-depth version of the link posted above. They go together nicely for you and your XPS:

    http://forum.notebookreview.com/thr...ures-benchmarks-xps-15-9560-kaby-lake.802345/
     
  4. Vlatko

    Vlatko Notebook Enthusiast

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    Whaaaaat? There is no way I'm doing all that on this 2 weeks old and super expensive laptop...at least while it's still in warranty. I'd rather return it. :-/

    But I really don't think temperatures are the issue. I'm at 40C and doing light browsing, nothing major so I don't think the CPU is being throttled....or? I mean I can't believe 1 chrome tab can cause throttling, no matter how incompetent Dell Squad is. The problem is like the CPU frequency multiplier is wrong. If I set it manually in Throttlestop at 38T, the CPU works normally.

    It's like this thread but not stuck at 0.8 Ghz but 1.9 Ghz;

    https://www.reddit.com/r/Dell/comments/5uh6wo/fixing_your_dell_xps_cpu_stuck_at_minimum/
     
  5. Maleko48

    Maleko48 Notebook Evangelist

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    Have you checked Dell's website for a BIOS update? Are all you main drivers fully up to date? How are your Windows 10 power profiles and power slider set? What are your CPU min/max thresholds set to under Windows power profile configs that you are actively using? Tbh, Windows 10 is **** right now. You might have a better experience on Windows 7 in terms of performance and control.
     
  6. don_svetlio

    don_svetlio In the Pipe, Five by Five.

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    Not normal thermal throttling - VRM throttling. The CPU is at 70*C while the VRMs are at 120*C and they limit the power delivered to the CPU and thus clockspeed falls.
     
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  7. Vlatko

    Vlatko Notebook Enthusiast

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    Yeah, 1.5.0 is the latest version. I did a clean install of Windows 10 like 2,3 days ago. All newest drivers from Dell, some even directly from Intel as suggested here.

    I only have 1 power profile in control panel(Balanced) and min is set to 5% and max is set to 100%.
     
  8. Maleko48

    Maleko48 Notebook Evangelist

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    What is your system cooling method set to? Active or Passive?

    TBH all of this is moot really due to the VRM baking. Look at post #3 above I linked you to for your machine. Then scroll down to the first screenshot with HWiNFO and see that @iunlock 's CPU was in the low 70's and his VRM was hitting 105C which is much too much. Hence why your graphs seem a bit strange. It is ultimately something flying under the radar due to traditional graphs and monitoring systems not really analyzing the VRM temps too closely since they are focused on the CPU/GPU primarily.

    @don_svetlio is not wrong here. It is not an explicit throttle happening on your system but a lack of voltage being able to be supplied from a minor component to a primary component which ultimately equates to power loss and clock speed loss even if the laptop and monitoring software isn't reporting any explicit throttling in the traditional sense that they know how to look out for.

    EDIT:

    That being said, it is incredibly ****ty of Dell to charge a premium for a premium product packed with high performance hardware that can't actually fully utilize said hardware due to thermal constraints and market it as a superior machine, to say: my 7577. Luckily for you, a thorough analysis and guide has already been laid out with outstanding results so it is really down to your skill and confidence as to whether you want to go that route.
    I believe @custom90gt is looking to sell his XPS 15 that is already modded I believe. Maybe that deal could work out for you two since you are still within your full refund return period?
     
    Last edited: Dec 4, 2017
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  9. pressing

    pressing Notebook Deity

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    Cramming "high performance" components into a crippled laptop is an industry problem.
     
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  10. Maleko48

    Maleko48 Notebook Evangelist

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    I've never been much of a weight weenie myself... I don't care so much about how thin a laptop is. I would rather have unrestrained performance.
     
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