Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.



Windows 7: Why does my core speed up at idle?

11 Mar 2013   #1

Windows 7 Pro 64bit
 
 
Can you help me determine if CPU-Z is giving me false readings?

I'm starting to do some overclocking with my core i5 750 and ASUS P7P557D Pro according to THIS TUTORIAL


So far I set the DDR3 frequency to 1600 and increased the BCLK frequency to 144MHz.


The weird thing is that when I run CPU-Z and watch it while running Prime95 to stress the system the core speed is faster when at idle. As soon as Prime95 starts, it slows down.

Here is the CPU-Z at stress:


Here is CPU-Z at idle:


I don't understand?

Shouldn't the core slow down at idle?

My System SpecsSystem Spec
.

11 Mar 2013   #2

Windows 7 Pro 64bit
 
 

Also, CoreTemp is giving me a different read.

Here it is at the same frequency running the Prim95 Test. CPU-Z displays as above, CoreTemp displays like this:



Am I using these programs incorrectly?
My System SpecsSystem Spec
16 Mar 2013   #3

Windows 7 x64 (SP1)
 
 

When stressing all cores on the CPU the turbo only goes so high on all four cores. However when you only have one core being utilized with any load it will go much faster. That is how Turbo Boost works.

And there is no such thing as idle. You may be idle but the computer rarely is.
My System SpecsSystem Spec
.


Reply

 Why does my core speed up at idle?





Thread Tools



Similar help and support threads for2: Why does my core speed up at idle?
Thread Forum
Solved CPU core speed at 3.5 GHz without overclock at AMD Athlon II X4 740! Hardware & Devices
Solved Looking for any advice for high CPU Core Speed PC Custom Builds and Overclocking
How to keep a specific core idle (AMD Bulldozer)? Performance & Maintenance
Solved Core Speed and Multipler Question Hardware & Devices
core speed Hardware & Devices
core 2 duo and quad idle temp heads up PC Custom Builds and Overclocking
Why is my CPU idle speed at 50% Performance & Maintenance

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:07 PM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33