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From: jasee on 15 Jul 2010 04:13 "Dave {Reply Address In.Sig}" <noone$$@llondel.org> wrote in message news:5ol2h7-99g.ln1(a)llondel.org... > Simon Brooke wrote: > >> >> >> On Mon, 12 Jul 2010 11:24:23 +0100, jasee wrote: >> >>> Network >>> cards don't wear out, of course hard disks do, but also cpu have a >>> limited life >> >> Uhhh???!? >> >> I have CPUs in this house which date back to 1979, and are still working >> just fine. In fact of the 19 pre-1986 machines in my collection, all >> still work perfectly, including the one MS-DOS machine (an Apricot). >> >> Limited life? Well, probably. I suspect some of them will die before I >> do. But not very limited! >> > I had a Pentium CPU that died. It can probably be dated by the speed > (166MHz) and had been stressed due to the fact that it had fan failure to > the extent that it had a scorch mark on the package. It worked for about a > year after that incident though. I remember losing a Z80 once as well, but > apart from that they've been pretty reliable. I've got an 8051 that's > managed 130,000 hours of near-continuous use and is still going. At one point (can't remember when) if you took the heat sink off the cpu simply blew up, then I think Intel first fitted a thermal device so it switched off then AMD followed suit. Of course they all have MTBF which is temperature related and not a straight line!
From: Simon Brooke on 15 Jul 2010 07:27
On Thu, 15 Jul 2010 09:13:26 +0100, jasee wrote: > "Dave {Reply Address In.Sig}" <noone$$@llondel.org> wrote in message > news:5ol2h7-99g.ln1(a)llondel.org... >> Simon Brooke wrote: >> >> >>> >>> On Mon, 12 Jul 2010 11:24:23 +0100, jasee wrote: >>> >>>> Network >>>> cards don't wear out, of course hard disks do, but also cpu have a >>>> limited life >>> >>> Uhhh???!? >>> >>> I have CPUs in this house which date back to 1979, and are still >>> working just fine. In fact of the 19 pre-1986 machines in my >>> collection, all still work perfectly, including the one MS-DOS machine >>> (an Apricot). >>> >>> Limited life? Well, probably. I suspect some of them will die before I >>> do. But not very limited! >>> >> I had a Pentium CPU that died. It can probably be dated by the speed >> (166MHz) and had been stressed due to the fact that it had fan failure >> to the extent that it had a scorch mark on the package. It worked for >> about a year after that incident though. I remember losing a Z80 once >> as well, but apart from that they've been pretty reliable. I've got an >> 8051 that's managed 130,000 hours of near-continuous use and is still >> going. > > At one point (can't remember when) if you took the heat sink off the cpu > simply blew up, then I think Intel first fitted a thermal device so it > switched off then AMD followed suit. > Of course they all have MTBF which is temperature related and not a > straight line! True. But, they don't 'wear out' in anything remotely approaching the timescale you implied. -- ;; Semper in faecibus sumus, sole profundam variat |