How can the CPU speed exceed the max speed?

6

I was watching my CPU speed in the task manager when I noticed that sometimes the CPU speed exceeds the maximum speed.

Screenshot

Actually, sometimes it goes up more than attached.

How can this happen?

KhaledWas

Posted 2016-03-07T16:59:01.677

Reputation: 63

1This shows your processor running at 2.08 GHz. This is not in excess of the CPU's maximum speed, which is a boost clock of 2.4 GHz. So, what exactly are you asking? – ChrisInEdmonton – 2016-03-07T17:02:27.047

1Because that is not the maximum speed. – Moab – 2016-03-07T21:19:47.050

5

Possible duplicate of Windows 10 Task Manager: CPU Speed Rises Above Maximum Speed

– Ben N – 2016-03-08T00:44:07.947

Answers

9

This particular cpu has a turbo speed up to 2.4GHz, where it's standard maximum speed is rated at 2GHz (the figure shown in task manager.)

This means the clock speed of the processor is constantly adjusted, taking into account the temperature, load and power requirements of the machine and current profile. If it's deemed necessary, the processor speed can be scaled up beyond the rated maximum of 2GHz temporarily, at the cost of higher temperatures and power usage.

Further reading - https://en.m.wikipedia.org/wiki/AMD_Turbo_Core - http://cpuboss.com/cpu/AMD-A8-6410

Jonno

Posted 2016-03-07T16:59:01.677

Reputation: 18 756

2The phrase "Standard Max Speed" is the key. I see. Kind of like airplane engines. Each engine has a max power, but it can be exceeded when in extremis. Related: when athletes say they gave 110%, that's just goofy talk. "You've been holding back on us." :) – Paulb – 2016-03-07T22:09:44.567