Default multiplier with i5

[saibot85]

Hi.

Im a little bit confused. I have an i5 750 CPU with GA-P55-UD3 motherboard. The multiplier is set to 15x by default in bios and the frequency is there for 2.00GHz. When i stresstest in windows i can't get the CPU to speedstep. so it is stuck at 2 GHZ. shoudn't it be able to clock at 3.2GHz or something? if I set the multiplier to 21x, which is max i get it to run at 3.00 GHz in load and much lower in idle so it seems like speedstep is activated then. what should i set the multiplier to? What is the "default" multiplier?

Thanx for the help!

[saibot85]

Okay, I go ahead and answere the question myself, as i have done some research. Standard multiplier for i5 is 20x. Why is it set to 15x in bios as default!? And why can't i make one core clock to 24x? Can't get it over 21x.

[Elemental_Dragon]

Because you have Energy saving on. CIE, C1 state etc are power saving modes that reduce your multiplier and power load when the System is not using it to it's full potential. (you can confirm this by opening CPUZ, Coretemp and running something like Prime95 - you'll see the CPU load reach 100% and speed goes up)

Turn off energy saving and it'll go to the maximum multiplier by default.

~Bex

[saibot85]

Thanks.

I have been using prime95 to stress the CPU before and got it up to 21x. But of what i heard it should be able to get as high as 24x @3.2GHz? But this is true if only one core is in use at the same time. Im i right?

If the CPU is idle then it goes down to 9x, i know. But why is the bios default setting 15x? If you stress it then you can't get higher than 15x.