How to address high Temps in XPS 8930

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  1. Posts : 31
    Windows 10
    Thread Starter
       #11

    bobkn said:
    Intel specifies a maximum die temperature of 100°C for the I7-9700K. I don't know what temperature the Dell is reporting: die, CPU case?

    If your CPU isn't going into thermal throttling, I presume that Dell would tell you that everything is operating within the specified range. The story would be the same for your graphics card.

    That's not to support Dell. I wouldn't like it, myself. I'd be concerned that the life of the components would be shortened. (Not that enthusiasts keep the guts of a PC more than a few years.)

    I'm surprised. I haven't been inside a Dell for a few years. They used to do things like a duct that allowed them to cool the CPU and case with a single fan. (Effective, and quiet. Difficult to duplicate in a DIY build.) The CPU fan in the XPS 8930 looks more like an OEM unit, which most enthusiasts would discard as inadequate.
    I spoke with the Dell technicians and they said running in the mid and upper 90's is not good and they said if push comes to shove they would look at replacing the CPU and the thermal paste (??) to see if that is the problem. The fan I have looks more like the squirrel cage type on your AC unit. It is supposed to be better than the fan & cooler that they put on some of the lower spec ed units. The issue with the XPS is that the case is very small and unlike any others in the way it is designed. I went with it because it is small, powerful and lots of bang for the buck. I am very satisfied other than the temps of the CPU.
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  2. Posts : 31
    Windows 10
    Thread Starter
       #12

    Brink said:
    If you mean for "Maximum processor frequency" from your first post, it is what I also referenced in my post above.
    I thought you were referencing where you merely set the limit to 99% but the solution I was referencing was limiting the MHZ which according to the person who posted it says it does not affect the computing power like lowering the percentage to 99%
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  3. Posts : 68,679
    64-bit Windows 11 Pro for Workstations
       #13

    Rlp1963 said:
    I thought you were referencing where you merely set the limit to 99% but the solution I was referencing was limiting the MHZ which according to the person who posted it says it does not affect the computing power like lowering the percentage to 99%

    The percentage was just another option, but they both basically serve the same purpose of limiting the CPU by going about it using different settings. You could test both and see what gives you better results.
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  4. Posts : 31
    Windows 10
    Thread Starter
       #14

    I am refrencing this conversation on another post. The link I shared is this solution.

    RE: Dell XPS 8930 is noisy under load - How to improve Cooling - Top Fan and CPU Cooler
    Excellent answer Soil85!

    I did some further testing and got the following results.

    Max CPU Frequency

    CPU Power usage CPU Temp Encoding Time (sec)
    No limit - 4592 MHz

    95w 85C 60
    4000 91w 83C 60
    3900 86w 80C 60
    3800 80w 77C 63
    3700 74w 74C
    64

    3600 68w 69C 66
    Any setting of at least 3900 mhz seems to have no impact on performance - at least in this particular test. I assume that something else is the bottleneck in this test once the CPU speed is 4000 or above e.g. memory speed. Alternatively the change in performance above 3900 is less than 1 second.

    Note that the above values are specific to this 1 minute test. I will repeat the test for ripping a whole bluray and report on the performance, maximum temps and maximum power usage.

    Each setting progressively reduces the noise levels under load - at 3600 the machine was pretty quiet.

    I suggest that people experiment themselves with the values above and choose whatever mix of performance and noise suits them.

    Add tags
    ghooper
    ghooper
    2 Bronze
    ‎12-26-2017 12:15 PM
    RE: Dell XPS 8930 is noisy under load - How to improve Cooling - Top Fan and CPU Cooler
    I ran a test ripping a whole movie with the Max CPU frequency unlimited and set to 3900mhz. The two took almost the same amount of time - around 1h 28 min. So that would indicate that a setting of 3900 really does not impact performance.

    With the longer test, when the CPU speed was unlimited the CPU temperature went up higher than in the 1 minute test. The maximum temperature was 93C and the maximum power was 101 watts.

    (That is 8C and 6 watts higher than the short duration test.)

    With the 3900 setting the maximum temp during the longer test was 83C and the maximum CPU power was 89 watts. (3C and 3 watts higher than the short duration test.)

    I am still considering an improved cooler to run the CPU at lower temperatures - even if it wont really improve performance. It is a challenge to see if I can get one to fit and work now.
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  5. Posts : 31
    Windows 10
    Thread Starter
       #15

    So I am asking for someone to comment on whether they have done this? Does it make sense to those more informed than me? How to do it step by step for a person who is not completely computer illiterate but not comfortable with doing this without help along the way.
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  6. Posts : 31
    Windows 10
    Thread Starter
       #16

    Thanks to all those who are taking the time to comment.
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  7. Posts : 68,679
    64-bit Windows 11 Pro for Workstations
       #17

    I have used that setting before in Power Options and in BIOS.

    It'll certainly reduce the temp of the CPU, but at a performance cap.

    In your situation, it may be best to look at cooling and airflow, and how you may be able to improve it. The better you can improve it, the less you will have to restrict the CPU.

    You'll just have to test and see what will work best for your situation.
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  8. Posts : 31
    Windows 10
    Thread Starter
       #18

    Okay thanks
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  9. Posts : 12,799
    Windows 11 Pro
       #19

    A good way to test it is to take the side of the case off and blow a house fan directly into the case. If you see a significant drop in temps it tells you you need more airflow. If it doesn't reduce temps it tells you there are other issues.

    I am sure you are aware, but all CPU coolers use the air inside the case to cool the CPU. So, if there is not sufficient cool outside air coming into the case, no CPU cooler will operate at its expected efficiency. The cooler you can keep the air inside the case, the better off you will be. Not only for CPU temps but for all the other components as well.
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  10. Posts : 31
    Windows 10
    Thread Starter
       #20

    essenbe said:
    A good way to test it is to take the side of the case off and blow a house fan directly into the case. If you see a significant drop in temps it tells you you need more airflow. If it doesn't reduce temps it tells you there are other issues.

    I am sure you are aware, but all CPU coolers use the air inside the case to cool the CPU. So, if there is not sufficient cool outside air coming into the case, no CPU cooler will operate at its expected efficiency. The cooler you can keep the air inside the case, the better off you will be. Not only for CPU temps but for all the other components as well.
    Thanks, I will try that.
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