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Strange: Pass on low Vcore but fail on higher. 1055t

post #1 of 5
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So this thing is happening to my PC and I have no idea why, neither has anyone been able to explain it to me yet except for "Bad overclock".

I can run PII 1055t IBT (intel burn test) on Vcore of 1.325v and 1.35v and pass the test.
However, if I raise the Vcore to about 1.375v or 1.40v/1.425v my computer will restart in the beginning of the test.

Now this is really bugging me and it's strange to me.
Has this happen to anyone. What can be causing this?

Shouldn't be vice versa, that It would restart if not given enough Vcore. Now it seems like it's restarting when given too much Vcore?

My PC restarts, No BSoD what so ever.
Temps are fine, CPUtemp shows 48c~ as max.

Cheers.
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Slave
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post #2 of 5
There are two ways to look at this: it may be the CPU that doesn't tolerate that kind of Vcore (which is less likely for 1.375) or that the motherboard can't properly provide the required voltage.
I'm shooting in the dark here, but in order to diminish the possibility that the motherboard is supplying ripple laden voltage I suggest disabling Cool'nQuiet and any other power saving technology as the rise in voltage at the begin of the test could cause ripple effects and in turn cause instability. Also you should set Win 7's power profile on high performance.

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post #3 of 5
Some times the same thing happens to me and my cpu-nb, eg to get my chip to run at 4.5ghz i need to have my cpu-nb @ 2600mhz and a precise voltage of 1.31v any higher or lower and its unstable. Maybe its a certain tolerance the chip has to freq/voltage.

You could maybe try putting it back to stock speed and raise the voltage and see what happens.
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post #4 of 5
Quote:
Originally Posted by amd-dude View Post
Some times the same thing happens to me and my cpu-nb, eg to get my chip to run at 4.5ghz i need to have my cpu-nb @ 2600mhz and a precise voltage of 1.31v any higher or lower and its unstable. Maybe its a certain tolerance the chip has to freq/voltage.

You could maybe try putting it back to stock speed and raise the voltage and see what happens.
CPUNB is diffrent. Too much voltage causes instability. It could be that if you run 2000Mhz @ 1.45V it's unstable but when you run 2900Mhz @ 1.45V it's stable.
Haven't had any experience with that but the same goes for ram voltage. If i set my ram voltage too high it get's unstable.
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post #5 of 5
to high or low of any volts makes pc unstable. I bet if u raised your fsp and then more volts it will work .
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