CPU's Speed keeps changing in Task Manager

[Wozi]

The CPU speed keeps changing from under 1GHz to sometimes over 2GHz but most of the time it is under 1.5GHz. I checked my sisters laptop and her speed stays the same and close to its actual speed, I also checked another PC and it is the same, should I be worried if so is there anything I can do to fix it


CPU: Intel i5-4460S CPU @ 2.90GHz

some pictures of my Task Manager with a browser (with 4 tabs open) and Steam:

http://prntscr.com/bmbfqx
http://prntscr.com/bmbgqd
http://prntscr.com/bmbh7w
http://prntscr.com/bmbhor

 

[Wozi]

Alright I realised that the CPU Speed drops are there to save power, so I found a solution if anyone is interested

http://smallbusiness.chron.com/prevent-drops-cpu-speed-70828.html

 

[BulLove]

It changes because you are not utilising the processor and it goes in efficiency mode and downclock itself to 0.8 Ghz

 

[Wozi]

thank you I have one more question the "maximum speed" of my CPU is 2.9GHz but sometimes it goes over by a little, is that ok?

 

[1N07]

This is normal behavior for a CPU.
You shouldn't prevent it from underclocking. It saves power and creates less heat.
It will boost it back up as needed. No need to worry about it.

As to boosting over the "maximum speed", that's good. The CPU just boosts itself because there's headroom in terms of power and heat.

All normal

 

[Wozi]

Thank you very much 😀

 

[BulLove]

It's because you have Intel Turbo Boost enabled which raises your cpu's frequency when you need more performance. Search for Intel Turbo Boost if you need more information

 

[1N07]

Thank you very much 😀

np.
Remember to choose a solution 😉
I do this for the instant gratification of seeing green around my comment XD

 

[k1114]

Task manager doesn't say the real time speeds but it's normal to change speed. It will go faster than 2.9ghz. As you can see turbo goes up to 3.4ghz. http://ark.intel.com/products/80818/Intel-Core-i5-4460S-Processor-6M-Cache-up-to-3_40-GHz