ThomasXPS15
2 Bronze

XPS 15 9570 is really slow after update to BIOS 1.11.2

Hello,

yesterday I have updated my XPS 15 9570 to the latest BIOS version 1.11.2  In the release notes I can read "Enhances thermal management of the system." Unfortunately this thermal improvements causes extreme trotteling of the CPU while the fans are relatively quite.

 

-> Running Prime95 on 12 threads for some minutes (Windows 10 power setting "Max performance", Dell Power Manager: Optimized, on AC adapter) causes the system to have a 58°C CPU at 1,4GHz while fans are running just at 3.7000 RPM. Super silent but super slow!!!!!!

 

I am expecting a next BIOS version fixing this. Yes! Silent fans are great. But why I have a 1,4GHz CPU at 58°C while fans are not running at full speed. The CPU package power is just 12.5W (PL1 Power Limit!) instead of the designed 45W. That must be a BUG! Am even not using the GPU while doing this test.

 

Here are some further details:

After some minutes of stress testing the CPU frequency is decreased. Also fan speed an temperature are going down!

XPS15LowPower.pngThat is the final stable state:

XPS15LowPower_3.pngXPS15LowPower_2.pngMuch to slow for this premium Notebook.

 

I hope this will be fixed.

 

Regards,

Thomas.

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12 Replies
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ThomasXPS15
2 Bronze

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

Hello, I was just back to the previous BIOS version 1.10.1. Unfortunately the problem was not gone. So I am not sure, if the problem starts with a previous BIOS version or the problem is not fixed with a BIOS rollback or I have some other troubles.... Are there any other users having he same trouble? Regards, Thomas.
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ThomasXPS15
2 Bronze

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

Hallo,

 

some further details:

 

Maybe that this problem is caused especially by Prime95 and other CPU intensive task are less effected by the low CPU frequenzy and low temporature problem. Even the Prim95 Test "Small FFTs" which uses less RAM is running stable at 2,5GHz at full FAN speed. Especially the "Blend" test which is using more RAM leads to low CPU frequencies (1,2GHz) at low FAN speed.

Regards,

Thomas.

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ThomasXPS15
2 Bronze

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

Hello,

 

it seems, that the problem is not caused by the new BIOS.

 

It was and is:

 

Intel Dynamic Platform and Thermal Framework

 

After uninstalling and testing (before Windows update installs it again) the CPU reaches 97°C while stress testing again. Which is what I would expect in full performance mode (power plan and dell power magagement settings....)

 

Regards,

Thomas.

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JimmyChenXPS15
1 Copper

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

Hi ThomasXPS15,

Could you please advise how to uninstall "Intel Dynamic Platform and Thermal Framework"?

Thanks!

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andr_moura
1 Copper

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

Intel problem.pngHello, I checked what you just said and then I encountered this situation, it's supposed to work this way or you think they are overlapping each other and then causing the slow in the performance? 

 

I thank you in advance, 

Andr_Moura 

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event-horizon
1 Copper

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

I’ve also recently noticed a lot of throttling when all 6 cores on my machine are being used. My machine is not throttling as bad as yours, but I will hit 25 watts or so on the PL1 power limit. This is running images through pix4d. I’ll take a look into the intel thermal framework driver and see if uninstalling and reinstalling it helps.

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Moderator
Moderator

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

event-horizon,

 

Click my name and private message me the pc service tag number as well as your registered name, email address, and phone number.

 


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ThomasXPS15
2 Bronze

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

Hello, some further details about my problem: I have an XPS 9570 for which I have updated following components: SSD: Samsung 970 EVO 2TB RAM: Corsair Vengeance SO-DIMM Kit 32GB, DDR4-2666, CL18-19-19-39 (CMSX32GX4M2A2666C18) Everything is working fine and stable since months (except the throtteling problem which suddenly appears somewhere in the past....). To solve the throtteling problem described above I have done following: 1. start Prime95 on 12 threads for some minutes (Windows 10 power setting "Max performance", Dell Power Manager: Optimized, on AC adapter) and wait until CPU goes down to about 1Ghz and fan getting silent... 2. start hwinfo and start watching of sensors for CPU frequency, fan speed, cpu temp, memory temp (if available), ssd temp, and the other ambient temp sensors. 3. open device manager 4. look for the "Intel Dynamic Platform and Thermal Framework Generic Participant" devices under "System devices" 5. for each of these devices open the properties and look for the device with "ACPI\INT3403\NGFF" as device path (this is the SSD device reporting sensor result to the Intel DPTF). 6. uninstall the device with the device path "ACPI\INT3403\NGFF" (via context menu of the device in the device manager tree) 7. immediately after the uninstall I could see, that the CPU goes up to 3GHz and above... (prime95 was still running) 8. also uninstall the device with the path "ACPI\INT3403\TMEM" 9. after that CPU was running as expected and normal thermal throtteling was started (fans are spinning up and CPU is working as fast as thermal conditions allow this... 3GHz and above...) WARNING: Windows would install the drivers for the uninstalled devices after triggering a "search for new devices" or via Windows update. So I have blocked device driver installation via group policy for devices with the hardware ID "ACPI\INT3403". Unfortunately all other still installed DPTF devices have the same hardware ID and they will not be updated via future driver updates with this policy. So this is still a temporary workaround. I think DELL has done a bad job implementing his BIOS for the XPS 15. It seems, that only hardware components distributed by DELL a supported by the BIOS. My own hardware replacements lead to wrong reported thermal sonsor data to DPTF causing this big thermal trotteling issures event all components are staying cold. I have also observed SSD and memory temperatures after uninstalling the both corresponding DPTF devices. CPU is running at full speed, fans are working at full speed while Prim95 is running and SSD and memory temp are staying stable far below the max operating temperatures. I hope this information helps to improve your XPS 15 and helps some others having the same troubles. Regards, Thomas.
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Moderator
Moderator

Re: XPS 15 9570 is really slow after update to BIOS 1.11.2

ThomasXPS15,

 

Click my name and private message me the pc service tag number.

 

 


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