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is 1.522 VCore safe for 24/7 on i5 2500k? 1.488 on load? - Page 11

post #101 of 114
Quote:
Originally Posted by hazarada View Post

Quote:
Originally Posted by pent View Post

intel does not give us an actual VCORE that is 24/7 safe
yes they do actually, they specified 1.4v in sbe spec sheet as the max operational voltage under ideal conditions to have no ill effects on the chip

proof.gif
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post #102 of 114
degradation coming your way TS smile.gif enjoy the ride!
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post #103 of 114
Can everyone please calm down about this. This is getting very stupid.

No matter what the voltage, a chip will always degrade. The only parameter to think about is time.......

As some have stressed it, ever chip is different. Impurities in the die play such a significant role that there is no one answer. Some people running it at 1.5v will be fine. Some will not. It's the luck of the game. Heat is a big problem because it allows die's to expand leading to leakage current. That can be detrimental. Even with heat under control, high voltages will effect the die.

From what I have read and worked with, 1.5 volts with high LLC will be fine in most cases; to the point that the chip should work past it's warranty expiration date. Keep temperatures below 70C. I know people say that SB is fine till 90C but I have seen that SB likes to be run below 70C for stable overclocks. Anything above requires quite a bit of a voltage bump.
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post #104 of 114
Quote:
Originally Posted by hazarada View Post

yes they do actually, they specified 1.4v in sbe spec sheet as the max operational voltage under ideal conditions to have no ill effects on the chip
Quote:
Originally Posted by pioneerisloud View Post

proof.gif

Check out this thread if you haven't seen it already. I put it up after I saw what hazarada said.

http://www.overclock.net/t/1183769/intel-posted-absolute-min-max-voltages-for-sandy-bridge
post #105 of 114
Quote:
Originally Posted by driftkidd2323 View Post

how is it stupid if I'm stable and cool? I'm under 70c.

I agree. The chip has no idea how it is being cooled. Besides, at idle, Vcore is probably .9.
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post #106 of 114
Good cooling does not necessarily counteract high voltage. You could get a processor being cooled by liquid nitrogen or something, and the ridiculously high voltage will still take its toll on the internal circuitry of the processor if my understanding is correct.

I am no expert. But I think it is safe and smart to say that the lower the voltage the better. And there is most likely a "sweet spot" for every processor. This is the point where the voltage is at its lowest in comparison to the clock speed and performance gain.

That's why most users will go for a slightly lower overclock and better temps instead of going for max speed.
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post #107 of 114
LOL this thread has so much info, it's a shame it's all opinions and speculations being put through as facts. rolleyes.gif

Here's my input, and this is something that I have been saying for quite some time now:


****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 as you can see in this this thread and many others.

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 70c biggrin.gif


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post #108 of 114
A lot of people saying that the chips don't degrade at high voltage have not been running really long enough to know.

What's the difference between a chip that last 1-3 years or a chip that lasts 4+ years?

I think it is safe to say the lower the voltage and temperatures the more likely you are to have a chip that last A LONG TIME. Just because you ran it for a year so far with no problems does not mean you aren't eating into its overall life span.
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post #109 of 114
Quote:
Originally Posted by hazarada View Post

yes they do actually, they specified 1.4v in sbe spec sheet as the max operational voltage under ideal conditions to have no ill effects on the chip

Link?
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post #110 of 114
Quote:
Originally Posted by pent View Post

Link?

The max Vcore (VCC) for SB-E is 1.4V. See page 60 on the datasheet.

The max Vcore for Gulftwown CPUs was also 1.4V. See page 23 of the datasheet.

It is reasonable to assume that that limit applies to SB as well since all three are on the 32nm process.

Of course you guys can do whatever you want with your CPUs. I personally keep mine below 1.4V because I often fold on it for days at a time. I want my 2600K to last. If you feel comfortable with more Vcore, then go right ahead.
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