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Z520 atom processor downclocks when running on battery!

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Last response: in Laptop General Discussion
July 24, 2009 6:12:11 PM

It downgrades the multiplier from x10 to x6. I have tried changing the powerscheme to always on and checking my bios to see if I can disable speedstep. No luck.

I run a acer aspire 0751h. Its so frustrating i want to control the speed myself. I want to run at full speed when surfing on battery and not carry my power adapter everywhere.

Any suggestions?

More about : z520 atom processor downclocks running battery

a b D Laptop
July 24, 2009 7:26:17 PM

In the BIOS it would show up as either EST or EIST, not just Speedstep.

Download the RightMark CPU Clock Utility:

I just put it on my computer to see if you could disable EIST and for me atleast it allows that change. Give it a shot.
July 24, 2009 7:50:37 PM

hmm I got it installed but cant find that setting. Is it a pro version option. Where did you find in your computer?
a b D Laptop
July 24, 2009 8:20:57 PM

No, I downloaded the free version (too cheap :)  )

It's under the "Advanced CPU Settings" tab: