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Unnecessarily High Voltages

post #1 of 5
Thread Starter 
I'm using an i7-980x, and from the past few weeks I've been playing around with target frequencies and voltages....

The CPU @ 1.42 GHz is only stable at 1.6 volts or higher

Note:
the GPU is 100% stable with its overclock
I've heard the PLL Voltage will help make it stable, is this true?

From what I've seen, the system can't run at 4.4 GHz with 1.4 volts. I'm aiming for 4.8, as my water cooling is phenomenal, but I'm worried that my voltage will be way too high, like, 1.8 volts to get it stable.

The only configuration that was able to run a Prime95 blend for 5+ hours was 1.42 GHz with 1.45 volts. Multiplier was 33, BCLK was at 134.

I then bumped up the multiplier to 34 (BCLK: 135) to get 4.59 GHz, and the voltage up to 1.48 volts, and it BSOD'd upon start up.

Any help with why my chip might be requiring such a high voltage?

Will edit for configurations that work and dont:
4.59 GHz @ 1.48 volts, system BSOD'd
4.59 GHz @ 1.5 volts, Prime95 crashes after several seconds
4.65 GHz @ 1.58 core voltage, 1.7 PLL Voltage. Prime95 crashes after 2 minutes.
4.42 GHz @ 1.425 volts, 1.7 PLL voltage. BSOD
4.42 GHz @ 1.437 volts, 1.75 PLL voltage. Prime95 crashes after a minute
4.42 GHz @ 1.46 volts, 1.75 PLL, ran P95 blend for an hour, stable AFAIK
Edited by whoa044 - 5/17/11 at 8:11pm
Lag Destroyer
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Lag Destroyer
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post #2 of 5
It sounds to me like you don't know how to OC.
Take a look here...
http://www.overclock.net/intel-cpus/...ed-guides.html
post #3 of 5
The CPU at 1.42 ghz is only stable at 1.6v or higher?

Huh? 1.42 ghz? Really?
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post #4 of 5
Thread Starter 
Quote:
Originally Posted by mbudden View Post
It sounds to me like you don't know how to OC.
Take a look here...
http://www.overclock.net/intel-cpus/...ed-guides.html
I've overclocked many systems before.... All successfully....
All I'm saying is that this chip won't be stable at 1.4 GHz with less than 1.4 volts running through, and if this is a problem I can somehow resolve
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post #5 of 5
Although I'm pretty new to this as well, I can say there is quite a bit more to overclocking one of these chips than just increasing blck and vcore. If you want something that simple to overclock I'd suggest the SB chips. The 980x is pretty much the same as I have and I'm on my 18th hour of Prime running 4680 MHz at 1.33V without any issues. I'd suggest starting over with the overclock and google "overclock 980X (or 990X) guide". There are a few out there that got me started down the right path. These chips are fully unlocked, so the sky is the limit.

There is even a youtube video that talks about overclocking this chip that should help you.
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