Date: Fri, 21 Jul 2000 12:53:05 -0700 (PDT) From: "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net> To: jeff-ml@mountin.net (Jeffrey J. Mountin) Cc: lioux@uol.com.br (Mario Sergio Fujikawa Ferreira), freebsd-stable@FreeBSD.ORG Subject: Re: Signal 11 on 4-Stable buildworld; bad memory or what? Message-ID: <200007211953.MAA39777@gndrsh.dnsmgr.net> In-Reply-To: <4.3.2.20000721132938.00b49400@207.227.119.2> from "Jeffrey J. Mountin" at "Jul 21, 2000 01:35:05 pm"
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> At 09:50 AM 7/20/00 -0300, Mario Sergio Fujikawa Ferreira wrote: > > > You should consult http://www.tomshardware.com/ for a > >complete overclocking guide IMHO. > > Also http://www.sharkyextreme.com/ has a possibly more complete how-to. > > Just remember that OC'ing is not supported. One should try to duplicate > problems *after* clocking down to spec. Note also that OC'ing can cause _permanent_ damage to semiconductors, and that clocking down to spec may still leave you with hardware that does not function correctly. The predominant failure mode is caused by something called electromigration that has to do with metal migrating into the semiconductor due to operating at excessive temperature. Electromigration is a non reversable process, and it only takes a few microseconds to occur should the temperature at a metal/silicon interface rise above a certain threshold, this spot heating occurs on the microscopic level and external temperature monitoring has very little, if any, visibility into it. This problem becomes more and more critical as geometries shrink. -- Rod Grimes - KD7CAX @ CN85sl - (RWG25) rgrimes@gndrsh.dnsmgr.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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