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Any risk in buying a CPU that has been benched with LN2 ?

post #1 of 18
Thread Starter 
Found a deal on a CPU but it has been "extreme" benched on LN2 cooling, is there any reason for concern in buying such a chip ?
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post #2 of 18
Maybe, Some silicon degrading. Usually, they work fine though.
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post #3 of 18
The chip will degrade slightly faster, but nothing really that noticeable. It should be fine, I currently use a CPU overclocked on DICE/etc and it works great.
    
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post #4 of 18
Thread Starter 
Hmm.. I'll give it some more thought, I appreciate the prompt replies +reps thumb.gif
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Skynet
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post #5 of 18
I would consider how long it was benched for, and what "Extreme" is.
post #6 of 18
Thread Starter 
Quote:
Originally Posted by AMDPhenomX4 View Post
I would consider how long it was benched for, and what "Extreme" is.
Asking the seller exactly that right now
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post #7 of 18
Thread Starter 
Here is the info the seller gave me

"4.9 was at 1.49v on air...first time I did that was the other night to test 3dm11 & vantage. I know 1.5 is safe on air, so I just set it knowing that would be ample voltage to pass all tests. On LN2 I used it maybe 1/2 dozen times for vantage runs, as vantage takes advantage of the muti-threaded capability. I eventually had it up to 6ghz @ 1.67v, which is really, really low voltage for that frequency, but most of the LN2 runs were at 5.7Ghz. I really baby'd it as i didn't want to degrade my $1,000 chip. I thrashed a few 580 CUII's, but I take care of my CPU's.

I bought it new in March/April when it came, and I bet it has no more than 24 hours actual run time on it. I understand your apprehension, but it's not degraded at all, I assure you. Actually I was quite impressed at 4.9g on air the other night, so I won't have any problem holding on to it if I can't get a reasonable price. It's the best gulftown out of the three I owned. "


Would this be something to be concerned about at all ? Seems like it wasn't benched too much but I don't know anything at all about that stuff so
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Skynet
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post #8 of 18
It's really upto you, I benched my chip at 1.7v a few times and kept majority of benching around 1.65v for a number of times and I was using watercooling, my chip still runs my 24/7 clock with no problems. As every chip is different the wear and tear of benching from chip to chip will be different, some are more resliant than other's.

Just my thoughts.
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post #9 of 18
no worries
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post #10 of 18
If your not planning on keeping it a very long time, there is no reason to worry much at all. My old 965 was benched many times under DICE & LN2 prior to me owning it. After a year and a half of me abusing it further under high voltage and air cooling...it finally dropped 200 Mhz off it's highest benching clock speed (under my term of ownership). Which only affected it's day to day max oc by about half that.

It should be fine
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