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2600k Nomming Vcore. how do i stop it??

post #1 of 17
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ok so i'm doin some OC'in, and I DONT KNOW WHY, but in order to get to 4.5Ghz, my 2600k is requiring like 1.38v. and that seems super high. but unless i feed him, it gets angry and just crashes my system. and i know max safe VCore is on every forum ever, but please do me a solid and give me the most recent SAFE voltage, cuz intel says its like 930.93v and everyone else says 1.38 - 1.4..... maybe i'm leaving a bad feature on. idk. either way im runnin at about 71 max and looks like 35 idle. noctua nh-d14. gigabyte Z68. 8gb corsair vengeance. ANY ADVICE??
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post #2 of 17
Quote:
Originally Posted by kobekramer1 View Post
ok so i'm doin some OC'in, and I DONT KNOW WHY, but in order to get to 4.5Ghz, my 2600k is requiring like 1.38v. and that seems super high. but unless i feed him, it gets angry and just crashes my system. and i know max safe VCore is on every forum ever, but please do me a solid and give me the most recent SAFE voltage, cuz intel says its like 930.93v and everyone else says 1.38 - 1.4..... maybe i'm leaving a bad feature on. idk. either way im runnin at about 71 max and looks like 35 idle. noctua nh-d14. gigabyte Z68. 8gb corsair vengeance. ANY ADVICE??
I can't really comment on your vcore situation, but I can say what the general consensus is about voltage and temperature.

The fact is, nobody really knows, but these days more and more people like myself, munaim1, and others (list would go on..) use voltages between 1.40v to 1.48v or possibly up to 1.50v even, but remember to keep an eye on your core temperature under stressful load, ideally keep the hottest core below 80C to avoid any possibility of high degradation.

As you have a 2600k, my current sig requires me to give my CPU around 1.352v-1.360v, using offset not manual too, for a speed of 4.6GHz with HT enabled. All processors vary however, depends on the silicon at manufacturing time.
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post #3 of 17
Well, nobody knows the max safe vcore like Ixel said. But on Intel.com the max core temp for i7-2600k is 72C.

My own thought on safe vcore is MAX 1.35.

Not sure about you needing 1.38 for 4.5ghz, on my chip I can get 4.5ghz stable on 1.300.
But hey, every chip is different.

http://ark.intel.com/products/52214/...he-3_40-GHz%29
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post #4 of 17
That is odd.. have u done testing at lower.. ive got 4.5ghz with 1.275

Edit: I've always have success with 1.3 that's a bit lower than what uve got
ur temps seem OK (not really good though) but i doubt that much voltage is good for the chip
Edited by TheGamefreak - 10/17/11 at 4:02pm
post #5 of 17
Thread Starter 
Yaaa, I can't even initiate prime95 at 1.37v :|, I have it at 79 load. That's with about 4 hours of prime running. I'm going to let it run all night. But it's really pissing me off. I just reset my noctua, but this chip might be bad. Idk. Hopefully I'm screwing up somewhere. But ya currently at 1.38v and 4.5. I'll Hopefully be able to get my temps down with the vcore. Any advice on the load line stepping for the z68s? Maybe thats doing It?
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post #6 of 17
i'd say the max safe vcore is DEFINITELY under 1.76... some chips require a little more voltage to be stable @ the desired clockspeed..1.38..is on the high side..but not uber-unreasonable,,intel spec sheet says max vcore=1.52..and max temp=72c.hmm..i'm thinking with that cooler..lower temps are possible..possibly try a reseat? good luck!
 
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post #7 of 17
your temp seems pretty good for vcore.
I wouldn't worry about it too much unless you're planning to overclock it further.
post #8 of 17
This is my take on max safe voltage and temps for SB:



****Max Safe Voltage and Temps****


Before I go into this, I just want to say that this is my OWN opinion and take it as you will.

No one is absolutely certain of what the safe vcore is for the sandybridge chips. What I can tell you is that many say the max safe vcore for these chips are 1.3 region, however, intel states that the max 'VID' is 1.52 and many say that around 1.4 if your on air and 1.45 should be the max if your running water cooling. Personally I will not go above 1.5v for 24/7 with these chip but that is totally upto you. The main thing to understand is that 'YOU' have to come up with the conclusion of what the max is. That way no one is blamed if the chip degrades (none reported so far, even with so called 'high 1.4+ vcore')

Those that have killed or degraded their cpu's have done so through either by their own fault, running sucide runs with crazy voltages and by not having substantial cooling for their overclocks and voltage or for reasons like their mobo or PSU causing shorting and also BIOS bugs.

Please remember that not all chips are the same, some can do high overclocks with low voltage some cannot.

Regarding temps, CPU throttles at 95c, some say keeping it below 85c is good, some say keeping it below 80 is better, other's say below 75c is really good and there are quite a few that say 70c should be the max. Which ever one your comfortable with and if you have substantial cooling, YOU DECIDE YOUR MAX, just remember it throttles at 95c. If for example you hit 85c in stress testing then in everday usage it shouldn't be higher than 75c which I think is fine, I personally like to keep mine below 70/75c during general everyday usage



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post #9 of 17
Thread Starter 
Quote:
Originally Posted by Schmuckley View Post
i'd say the max safe vcore is DEFINITELY under 1.76... some chips require a little more voltage to be stable @ the desired clockspeed..1.38..is on the high side..but not uber-unreasonable,,intel spec sheet says max vcore=1.52..and max temp=72c.hmm..i'm thinking with that cooler..lower temps are possible..possibly try a reseat? good luck!
just reseated it >:| but yeah, probably needs reseated. i think i used to much thermal paste.
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post #10 of 17
Some chips just need more juice. After extensive testing my 2600k requires 1.35-1.36v for 4.5 to be stable.
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