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Sandy Bridge "burn in" period....

post #1 of 15
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I was talking to pio and he said that SB has a burn in period where after a few weeks to a month, the chip suddenly needs more votlage to be stable again (ex, if it took 1.36 for 5, it will need 1.38). But will no longer experience this phenomenon again afterwards.

Is this crap true?
 
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post #2 of 15
As technology gets smaller and smaller this will be more prevalent. It's called electromigration.

Is it true? No/yes.

No in the sense that it's crazy rare

Yes in the sense that it does happen.
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post #3 of 15
It happened to mine personally and everybody I know personally on Steam with SB.

Is it something to really WORRY about? No, not really.
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post #4 of 15
Could just be degrading due to bad overclock settings, LLC spikes, too much voltage, bclk above 100, cpu pll too high/low, excessive benching and stress testing. 1.36v for 5ghz is pretty golden..
post #5 of 15
Quote:
Originally Posted by amvnz View Post
Could just be degrading due to bad overclock settings, LLC spikes, too much voltage, bclk above 100, cpu pll too high/low, excessive benching and stress testing. 1.36v for 5ghz is pretty golden..
I have NEVER given my chip over 1.50v under load, and its always been very very well cooled. On air I never passed 1.40-1.425v because of heat. I never let my chip pass 85*C prime.

And yet I still experienced this phenomenon. It happens sometimes with some of these SB chips. No idea what causes it, but in my experience...once it happens its done and won't happen again. I had to raise voltage about 0.02v to regain stability (2 weeks into owning the chip). Ever since that happened, I have never had to raise voltage again for the same clocks.
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post #6 of 15
2 weeks? Maybe I encountered this as well, but not too sure as I couldn't settle on a voltage or core clock for a long time and constantly messed with offset mode.
post #7 of 15
This hasn't happened to me at all (1.38V on water). A poll or spreadsheet (with more information) could be helpful to get some meaningful numbers on how many this has happened to. I've never used over 1.4V as I still think 1.5 is crazy high for 32nm.
 
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post #8 of 15
Shouldn't this 'burn in period' be called degradation?
 
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post #9 of 15
Quote:
Originally Posted by Wishmaker View Post
Shouldn't this 'burn in period' be called degradation?
I like to call it "burn in" personally, simply because once it happens, it won't happen again. Degradation would be that it continues to happen until you can no longer reach X frequency.
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post #10 of 15
Never happened to my 2600K. Overclocked it straight from the box and has been folding pretty much non stop since then without issue.
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