den4b Forum

damike

Member

Registered: 2012-11-06

Posts: 3

How come cpu speed MHz drops below pstates

I was just wondering what does the current cpu speed (mhz) drops below the minimum pstate? Is this the c1 state or something else?

Last edited by Stefan (2012-11-07 11:24)

Stefan

Moderator

From: Germany, EU

Registered: 2007-10-23

Posts: 1,151

Re: How come cpu speed MHz drops below pstates

Hi, welcome. What application are you talking about? Which version? On which OS?

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damike

Member

Registered: 2012-11-06

Posts: 3

Re: How come cpu speed MHz drops below pstates

cpumon 1.60 on windows xp x86

den4b

Administrator

From: den4b.com

Registered: 2006-04-06

Posts: 3,309

Re: How come cpu speed MHz drops below pstates

CPU speed is calculated in real-time and it will always vary slightly depending on the load of the system and other introduced latencies.

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damike

Member

Registered: 2012-11-06

Posts: 3

Re: How come cpu speed MHz drops below pstates

ok cool, so the mhz is the apparent speed of the cpu, which is different from the actual speed like the one given in cpu-z. So when it drops to something very low like 30 mhz, it is not an actual pstate. Thanks!