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Unstable Overclock of 2500k -- Higher Voltages - Page 2

post #11 of 15
Quote:
Originally Posted by donkrx;14619678 
Yeah, under 1.45v is the smart choice but still gets you good overclocks. Some run 1.47. I might, I'm not really sure yet. The thing is that I use Offset voltage so the majority of the time my voltage is significantly less than 1.47v, and I don't use my CPU a lot thru the day... occasional gaming.

The thing is that you have to decide what is acceptable. Certainly at 1.35v you have plenty of room, but I have to say, 1.335 being unstable in Prime after 45 minutes doesnt sound great (most are stable at that voltage at 4.5ghz). You might want to go to the Sandy Stable Club and either post and ask some questions, or look at the general advice on the OP.

Noctua should be able to handle what CloudX said, the clockspeed will generate a lot of heat too, so you might not hit 4.9/5.0. Again see the Sandy Stable Club thread, there is a huge table with temps and everything. Try to stay under 85C in Prime for your peak temps... while that sounds high in Prime, that will mean the MAX you ever get outside of stress testing will be 75C, and most of the time you will be in the mid to high 60s which is great and perfectly safe.

I cant wait to get my Sandy stable test done officially, my temps are so good (79F ambient) after lapping but I gotta prove it first.

How exactly do you use offset voltage and what benefits are there to that rather than running it with a fixed voltage with LLC?

Cuz i got mine running 1.464v during idle and 1.448v during load. I'm hitting high temps of 88c during P95 though after an hour.
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post #12 of 15
Thread Starter 
Quote:
Originally Posted by CloudX;14619348 
I'd say keep it under 1.45v with the noctua. If your ambient is under 78f, and your case has good airflow, that noctua will keep up with your chip. As always monitor your temps with prime95. Decide what your max temperature is and tune it there. I say keep it below 80-85c for stress testing only. You'll notice some FFTs heat up the CPU while some run cool.

great. thanks mate; such a bummer to get one of the "lesser" chips; but whatcha gonna do?
Quote:
Originally Posted by donkrx;14619678 
Yeah, under 1.45v is the smart choice but still gets you good overclocks. Some run 1.47. I might, I'm not really sure yet. The thing is that I use Offset voltage so the majority of the time my voltage is significantly less than 1.47v, and I don't use my CPU a lot thru the day... occasional gaming.

The thing is that you have to decide what is acceptable. Certainly at 1.35v you have plenty of room, but I have to say, 1.335 being unstable in Prime after 45 minutes doesnt sound great (most are stable at that voltage at 4.5ghz). You might want to go to the Sandy Stable Club and either post and ask some questions, or look at the general advice on the OP.

Noctua should be able to handle what CloudX said, the clockspeed will generate a lot of heat too, so you might not hit 4.9/5.0. Again see the Sandy Stable Club thread, there is a huge table with temps and everything. Try to stay under 85C in Prime for your peak temps... while that sounds high in Prime, that will mean the MAX you ever get outside of stress testing will be 75C, and most of the time you will be in the mid to high 60s which is great and perfectly safe.

I cant wait to get my Sandy stable test done officially, my temps are so good (79F ambient) after lapping but I gotta prove it first.

Ty very much; gonna try @ 1.35 when I get home and test to make sure I am stable there... (which i better be) for 4.5GHz.

Good luck to you both with your OC'ing as well.

Checking out the Sandy Stable club as informed ty!
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(>Q.Q)>
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post #13 of 15
Thread Starter 
I have gotten my vcore to 1.344 in CPU-Z and holds steady for 6 hours of Prime95.

I want to drop that voltage steadily; I am also have some issues with vdroop; any ideas there?
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post #14 of 15
Quote:
Originally Posted by Phry;14619808 
How exactly do you use offset voltage and what benefits are there to that rather than running it with a fixed voltage with LLC?

Cuz i got mine running 1.464v during idle and 1.448v during load. I'm hitting high temps of 88c during P95 though after an hour.

Holy Smoke! 88C! That is way high. I have a Silver Arrow on my 2500k at 5 Ghz with 1.48 vcore and is rarely goes over 65 with an 80f ambient. ( I live near St Paul also )

Maybe you need to reseat the SA or lower your OC. If you run IBT you will hit 95c with those settings.....
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post #15 of 15
Thread Starter 
Yeah those temps are a little much
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