Cpu speed in Windows is less than overclock

[khisanth75]

Hi there

Quick question, my i7 930 is overclocked to 4GHz in the bios, but Windows just shows it at stock speed.

Do i need to set anything in the BIOS or in Windows to keep it at the overclocked speed?

thanks

 

[chrisgt]

http://www.cpuid.com/softwares/cpu-z.html

 

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Intel Speed Step