<HTML><head></head><body style="font-size:10pt;font-family:Verdana,Arial,Helvetica,sans-serif;">I have no clue of how to do this "distillation process" - it is not my field. How would you do this? Do you have the numbers for any cpu?<div><br></div><div>And Arrhenius - again, semiconductors is not my field - would a 10 degree rise halve the life span irrespective of activation energy and temperature range?<br><br><p>On Apr 14, 2010 15:49 "Lux, Jim (337C)" <a href="mailto:james.p.lux@jpl.nasa.gov"><james.p.lux@jpl.nasa.gov></a> wrote:</p><blockquote type="cite">Start with Arrhenius.. 10degree rise halves the life.<br><br>Actually, there’s a huge amount of information out there on<br>semiconductor failure and life effects. It’s just not distilled down to<br>a “for part #, here’s what happens”, because it depends on a lot of<br>things.<br><br><br>On 4/14/10 1:12 AM, "Jon Tegner" <<tegner@renget.se>> wrote:<br>> > the max temp spec is not some arbitrary knob that the chip vendors<br>> > choose out of spiteful anti-green-ness. I wouldn't be surprised to<br>> > see some<br>> > <br>> > ****************************************************************<br>> > <br>> > Issue is not the temp spec of current cpus, problem is that it is<br>> > hard to get relevant information. I haven't found any that states<br>> > that the failure rate in year 5 should be significantly higher if<br>> > you operate the cpu at 65 C instead of 55 C. I'm just saying this<br>> > kind of information would be valuable (and I would be glad to find<br>> > it).<br>> <br></blockquote></div></body></html>