Intel Core i7-4770K / BIOSTAR Z87X 3D overclocking issue

[ScottFern]

I just put together my Haswell rig with a BIOSTAR Z87X 3D motherboard and a i7 4470k and I've set the voltage and the multiplier to 45 and it shows 4.5Ghz in the bios but as soon as I get into Windows 8 and open up CPU-Z it shows stock 3.5Ghz and I have no idea why my settings aren't being reflected once I log into Windows. Any ideas?

 

[Geforce man]

download CPU-z, and a program that will stress all cores, like Intel Burn test or Prime95. With CPU-z open, start one of the tests. You will see it at the correct Mhz at that time. My i7 2700k is at 4600Mhz, but windows reads it as 3500, as thats the base stock frequency.

Hope this helps!

 

[ScottFern]

Turned out stupid windows 8 power profile had to be set to high performance in order for the CPU clock to stay at 4.5ghz.