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Vcore is going nuts after adding +0.02v

post #1 of 4
Thread Starter 
For some reason now that I'm at 48x and increased my voltage by +0.02, I'm fluctuating a lot under load. At 47x, with everything the same except the Vcore, this didn't happen.

At 47x, I would have a voltage of 1.392 for almost the entire Prime blend test. The "outliers" were 1.384 and 1.404.

At 48x and more vcore, I am fluctuating almost every second between 1.408 and 1.424... it won't sit still, even after 30+ minutes of Prime blend. My temperatures also seem to vary a bit more than at 47x.

At idle, however, I am sitting at a constant voltage without these fluctuations.

My settings:
47x:
- Internal PLL Overvoltage: enabled
- Spread spectrum: disabled
- Voltage method: Offset @1.384-1.392 in CPU-Z/Prime
- LLC: "3" ("5" is highest)
- C3 & C6: disabled
- Package C-state limit: C2
- VTT/VCCIO: 1.05v
- CPU PLL: 1.709

48x: Same except for the following noted below:
- Spread spectrum: have tried both
- Voltage method: Offset @1.408-1.424 in CPU-Z/Prime


Spread spectrum didn't have any affect.

I'm a little hesitant to change LLC to a lower setting, but I will try it right after I post this.

I'm confused why I would fluctuate more just because I added more Vcore. Thoughts anyone?
    
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post #2 of 4
Its completely normal.
Nothing to worry about. Every few steps in voltage increase there's a point where it will fluctuate like that.

For me, If I have 1.368v in bios, it will stay at 1.328v in windows idle and under load but if I give it one more step, 1.375v in bios, I have 1.344v-1328v with 1.344v under idle and 1.328v under load. It still drops sometimes to 1.328v when sitting idle.

Nothing to worry about.
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Animal Mother
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post #3 of 4
Thread Starter 
Well, you're using Fixed voltage, and what LLC are you using?

Update:
I tried LLC higher (to see if it was gonna be worse) and its exactly the same.
I also went back to 47x, and it appears its also happening there. Maybe I overlooked this but I always remember it being steady.

Maybe its how CPU-Z rounds it off, and how close I am to that border between rounding up and rounding down.

I guess its no big deal.
Edited by donkrx - 8/4/11 at 5:10pm
    
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post #4 of 4
Quote:
Originally Posted by donkrx View Post
Well, you're using Fixed voltage, and what LLC are you using?

Update:
I tried LLC higher (to see if it was gonna be worse) and its exactly the same.
I also went back to 47x, and it appears its also happening there. Maybe I overlooked this but I always remember it being steady.

Maybe its how CPU-Z rounds it off, and how close I am to that border between rounding up and rounding down.

I guess its no big deal.
This. Every few steps its at that border between the steps in voltage that CPUz displays.
Animal Mother
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Animal Mother
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