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tss-mflanagan
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11 Posts
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20153
June 26th, 2021 12:00
Precision 7550 CPU Throttle
Precision 7550; i7 10850H CPU @ 2.70GHz; Win 10 Pro
- Prior to plugging in a WD19TBS, task manager would show my CPU speed varying from 0.8 up to 4.3GHz (or so). Nice and fast.
- BIOS (1.7.0) shows turbo boost on
- Plugged in the WD19TBS dock, and the cpu seems stuck at 0.81GHz, no matter what we plug into/out-of the dock, what programs are running, etc.
- Unplug dock and restart--no change.
- Unplug dock and cycle power: CPU back to 4.3GHz.
- Plug dock back in--CPU steadily downgrades to 0.8GHz in about 5-10 seconds
- Dell support diddled with the system:
- Installed bios 1.8.0--no change
- Disabled some Windows services (non-MS)
- Went in to Dell Power Manager and chose "Ultra Performance"
- Set regedit key Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\intelppm from 3 to 4
- CPU now runs at 2.7GHz at all times
- I then made the following changes:
- reset the intelppm/start key back to 3
- Unplugged dock
- Changed Dell Power Management to "Balanced"
- Cycle power: CPU now stuck at 0.81GHz.
- Changed Dell Power Management back to "Ultra"
- Cycle power: CPU now "stuck" at 2.7GHz. It's a noticeable slowdown.
How do I get my system back to where it was before all this started? I don't even care to get the dock working with it right now...I need my speed back.
Wardski1974
2 Intern
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189 Posts
1956
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Posted July 29th, 2021 19:00
I can confirm this does fix the throttling issue!
tss-mflanagan
1 Rookie
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11 Posts
6046
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Posted July 29th, 2021 20:00
WD19TBS.
tss-mflanagan
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11 Posts
2361
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Posted July 29th, 2021 20:00
Yay! I'll try it out as soon as I can. THanks for the heads up.
tss-mflanagan
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11 Posts
2359
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Posted July 29th, 2021 21:00
Yes; it seems to have solved the problem.
Next step (probably on Friday), try installing the WD19TBS T'bolt Dock.
Jeff R Lewis
1 Message
2593
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Posted July 30th, 2021 14:00
I tried downloading & running the 1.7 BIOS update, but it doesn't seem to have taken. It shows that I still have v 1.8. Can you share the correct link so that I'm sure I'm downloading from the right place? Is there anything else I should do to perform this downgrade?
tss-mflanagan
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Posted July 30th, 2021 16:00
@Jeff R Lewis Look at silverkorn's post (above) with the link to v1.8.1.
tss-mflanagan
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Posted July 30th, 2021 16:00
There's an even better solution, I think. 'silverkorn' has posted a link to v1.8.1; several have tried it (including me), and it works. It's in this thread. I'll mention you in reply to his post so you can get the link.
Here's the link that silverkorn posted. I've tried it, and it works.
tss-mflanagan
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Posted August 1st, 2021 10:00
"Final" update: this all started when I tried installing a Thunderbolt Dock (WD19TBS), which needed a BIOS upgrade to 1.8.0, which slowed down the system, etc., etc. (Dell suggested a motherboard replacement, which I declined.) Now, after the updated BIOS v1.8.1, I installed the dock, and everything is working fine (fingers crossed, knock on wood). No m'board replacement required.
aguilara
1 Message
5768
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Posted July 29th, 2021 17:00
Out of curiosity, which dock station are you using? is it one of the WD19 performance docks?