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ThoST
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Solved!

HP EliteBook 840 G6 Turbo Boost Issue

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HP EliteBook 840 G6
Microsoft Windows 10 (64-bit)

Hello,

 

Wish to get some wisdom from community about a weird issue I observed on HP EliteBook 840  G6.

 

After turn on the laptop while connecting to AC power, CPU can easily turbo boost up to 3 Ghz and more.

 

And then when unplug AC to run on battery for a while, the turbo boost is not great when connect back to AC again.

 

After connect back to AC, the turbo boost rarely goes beyond 2 Ghz. A restart will fix this and allow higher turbo boost.

 

Is there any way to allow the same turbo boost without rebooting ?

 

* Edit *

Have a new observation, after observing the lack of turbo boost, put the laptop to sleep and wake up, the boost speed returns.

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erMalino
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I had the same problem with my Elitebook 850 G6. It turned out that opening Throttlestop is enough to force CPU to activate AC adapter mode. No need to restart over and over again to get full turbo. Hope it helps! 🙂

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soccer_dan
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can you check and make sure the laptop is up to date? Use HP Image Assistant and update BIOS and all drivers, including Intel DPTF (Dynamic Platform and Thermal Framework)

I work for HP. However, all opinions and comments are my own.
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erMalino
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I had the same problem with my Elitebook 850 G6. It turned out that opening Throttlestop is enough to force CPU to activate AC adapter mode. No need to restart over and over again to get full turbo. Hope it helps! 🙂

View solution in original post

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ThoST
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Hi Soccer_dan,

 

I tried running HP support Assists, all driver is up to date (as well as windows update).

 

Hi ErMalino,

 

Thanks for the tip, it works.

 

From my testing, Throttlestop has to be already running before disconnecting AC and move to battery mode.

 

When connect back to AC mode with Throttlestop still running, the turbo boost is excellent.

 

Disclaimer : Incorrect use of Throttlestop might damage the PC, for my case, no functions of Throttlestop has been enabled explicitly, just open the program as it is.

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