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Odd CPU frequencies

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December 20, 2012 9:41:58 AM

I have a i5 3570k paired with a MSI Z77A-G41. I have my cpu overclocked to ~4.0Ghz in the bios with a combination of increased multiplier and FSB. DRAM set to auto and Link. When i start windows and open up CPU-Z it reads the correct overclock that i set in the bios. However, when i check windows (right click my computer and go to properties), it shows 3.8Ghz. Lastly, whenever I open RealTemp my CPU frequency changes to ~ 3.6GHZ. I reopen CPU-Z and it shows ~3.6Ghz as well. I notice the CPU multiplier has lowered itself, from 38 to 34! All power savings settings in bios are disabled (intel step, C1E, etc), and the power options in control panel are set to high performance.

Anyone able to give me some insight as to why this is happening?

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December 20, 2012 9:55:15 AM

Well, windows power saving things? Are you sure you turned everything off?
December 20, 2012 10:39:13 AM

I put the power management to 'high performance'. What else can I change? Using windows 7 btw.
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December 20, 2012 10:46:45 AM

Brendo13 said:
I put the power management to 'high performance'. What else can I change? Using windows 7 btw.

I don't know. Why does it matter if it's saving you power anyway?
December 20, 2012 10:53:42 AM

i want the overclock to stay at 4.0Ghz? It doesn't change when it clocks down to ~3.6Ghz when i open RealTemp, it stays that way no matter the load because intel stepping is disabled....
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December 20, 2012 10:55:16 AM

Brendo13 said:
i want the overclock to stay at 4.0Ghz? It doesn't change when it clocks down to ~3.6Ghz when i open RealTemp, it stays that way no matter the load because intel stepping is disabled....

Try cpu z or core temp.
December 20, 2012 11:04:35 AM

CPU-Z works fine. The problem is Windows 7 getting a different overclock reading (as stated in the OP) and the CPU frequency changing when i open RealTemp.
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December 20, 2012 11:07:00 AM

Brendo13 said:
CPU-Z works fine. The problem is Windows 7 getting a different overclock reading (as stated in the OP) and the CPU frequency changing when i open RealTemp.

The problem is clear. Windows 7 is broken.
December 20, 2012 4:16:28 PM

Well when I open RealTemp to check the CPU frequency, the frequency RealTemp gives me suddenly drops from 4.0ghz to 3.6ghz.
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December 20, 2012 8:59:13 PM

Look in the RealTemp Settings window. Is Disable Turbo checked? Clear that box so your CPU can use Intel Turbo Boost.
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