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CPU multiplier after OC sould be steady or not ?

post #1 of 11
Thread Starter 
Hello;
Before I had ASUS MB and after oc my cpu clock was always x21
now on my new EVGA MB I noticed that multiplier is changing x11-x14 when
cpu does nothing and it goes up to x21 in linx.
Is that normal ? I tought that lower freq of cpu does not wor after OC
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post #2 of 11
It's a power-saving mechanism that can be turned on or off in the bios. It's normal.
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post #3 of 11
Thread Starter 
Ok so sould I leave it off or on if I want to keep my OC stable ?
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post #4 of 11
That's up to you. Intel has "Speedstep" and "Turboboost" - the speedstep allows it to change the multiplier to save power, and the turbo gives the OS another x1 multiplier under heavy loading. I don't trust turbo when OC'ing, but a lot of people leave speedstep on for efficiency purposes. I turn it off, but that's just me.

Downclocking won't shouldn't affect stability.
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post #5 of 11
Thread Starter 
This turboboost - I've heard that it gives x1+ only to one core - is that true ?
I noticed when I was on x22 on my old MB windows showed lower cpu freq than bios, when I was on x21 the values were the same everywere - Can U explain ??? Is there application witch shows me all cores freq values ?
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post #6 of 11
To my knowledge, it isn't possible to run separate cores on separate frequencies, as the multiplier allows the CPU to talk to the QPI. There's only one QPI on these non-server chips, so having a 21x multiplier for some cores and a 22x for another core would be a traffic jam, so to speak.

CPUZ will show you your frequency, but not of individual cores. I don't know of any programs that do that.
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post #7 of 11
Thread Starter 
Hmmmm I have speedstep disabled in BIOS. Why is it working then ?
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post #8 of 11
Quote:
Originally Posted by effendi360 View Post
Hmmmm I have speedstep disabled in BIOS. Why is it working then ?
Disable C1E as well.
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post #9 of 11
Thread Starter 
Ok Its x21 now all the time
How about this Turbomode - can't find it in bios.
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post #10 of 11
If your OC is stable with EIST then use it. Good for the CPU. Enable after you're finished overclocking.
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