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is 1.522 VCore safe for 24/7 on i5 2500k? 1.488 on load? - Page 10

post #91 of 114
Quote:
Originally Posted by pioneerisloud View Post

Yes. But what is "too much"? That's the question here.
And from what I've seen, 1.50v is fine on Sandy Bridge. Temperatures will kill your hardware WAAAY before voltage will. Granted a short burst of voltage that's too extreme, yes that'll kill a chip quickly.

i hope you do realize what kind of responsibly your are facing claiming that 1.5v is perfectly normal.

people could take your advice and proceed to apply that to their own machines only to realize that it killed their or degrade their own hardware in the long run



as i said, not all chips have the same tolerance and that some chips could handle that amount of voltage while others can't.
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post #92 of 114
I do not think my chip would last too long with 1.5v as it would be blazing hot under load but it is a low voltage chip.
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post #93 of 114
Quote:
Originally Posted by pioneerisloud View Post

He was running 1.65v RAM with stock VCCIO, which is a no no. He needed 1.15v VCCIO minimum.

I know that a 0.5v maximum between the ram and imc voltage was required for Lynnfield processors (like the i5 750), but most of the sandy bridge overclocking guides (except 1 from what I remember) say that this is no longer the case.

However, I did notice that when I was overclocking my ram to 2133mhz @ 1.65v, my system did seem to need 1.15v vccio to get stable, which seems to favor the 0.5v maximum, but this could have been due to my 4.9ghz overclock and 4 sticks of ram, so I can't say it's really proof.

I was just wondering if you've heard definitively that this 0.5 voltage maximum still exists? Mainly I've just seen guides state that it doesn't apply anymore without proof or an explanation as to why.
Edited by Mad Skillz - 12/12/11 at 3:37am
post #94 of 114
Intel speced it for 1.5v max ram, so it's 1.05v factory.

Anything over 1.5v is "unsupported" and may damage your chip as they say.
    
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post #95 of 114
Quote:
Originally Posted by Mad Skillz View Post

Quote:
Originally Posted by pioneerisloud View Post

He was running 1.65v RAM with stock VCCIO, which is a no no. He needed 1.15v VCCIO minimum.

I know that a 0.5v maximum between the ram and imc voltage was required for Lynnfield processors (like the i5 750), but most of the sandy bridge overclocking guides (except 1 from what I remember) say that this is no longer the case.

However, I did notice that when I was overclocking my ram to 2133mhz @ 1.65v, my system did seem to need 1.15v vccio to get stable, which seems to favor the 0.5v maximum, but this could have been due to my 4.9ghz overclock and 4 sticks of ram, so I can't say it's really proof.

I was just wondering if you've heard definitively that this 0.5 voltage maximum still exists? Mainly I've just seen guides state that it doesn't apply anymore without proof or an explanation as to why.

I've seen nothing "definitive"....no. I've seen what my chips have seemed to need. When raising my RAM voltage, even just to 1.60v...my IMC tends to want the VCCIO raised with it, otherwise its not stable. That's with both of the 2500k's I've used.
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post #96 of 114
Quote:
Originally Posted by pioneerisloud View Post

I've seen nothing "definitive"....no. I've seen what my chips have seemed to need. When raising my RAM voltage, even just to 1.60v...my IMC tends to want the VCCIO raised with it, otherwise its not stable. That's with both of the 2500k's I've used.

Alright.. thanks for the info. Since we've both seen the same thing, it sounds like you're probably right.
post #97 of 114
Run it!!!!!

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post #98 of 114
As each chip may be as different as a snowflake,they all have some simularities a shared trait..
1.5vcore IF TEMPS ARE OK WILL NOT DEGRADE NOTHING NO MATTER THE CHIP. there is a shop in madison that runs 35 2500k's and 35 2600k's at full tilt since they came out doing boinc all at 1.5 vcore at 5.0 and nothing has degraded........
post #99 of 114
We are also talking not only a die shrink but also process, material change for the these chips...The high k dielectric is able to handle more stress according to the limited research and understanding I have done on it, http://en.wikipedia.org/wiki/High-k_dielectric . Its a neat read.
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post #100 of 114
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
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