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Mbm5

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I'm using motherboard monitor 5 and there's a CPU Diode temp. Whats the normal, ok and high temps for this?
 
mine idles at about 20C at idle and 30C max load on 1.75v, but on 1.95 i get about 25C idle, 45C max load.
 
depends on what you want longterm
lower is always better

alot of people try to keep it under 50c over that electromigration starts to get progressively worse, as you go higher the higher the rate

as a rule of thumb for each 10°C (18°F) temperature rise reduces component life by 50%*.
Conversely, each 10°C (18°F) temperature reduction increases component life by 100%.
the Arrhenius equation
http://www.shodor.org/UNChem/advanced/kin/arrhenius.html

also varies with the chip
Processor Spec Finder @ Intel
Thermal Power In Watts


lots of info and links in these two threads ;)
http://hardforum.com/showthread.php?t=764349
http://hardforum.com/showthread.php?t=760899&highlight=resistance
 
Wow, mines at 50-65 at times I better lower my OC, man this sucks! :mad:
 
or the ambient temperature or the thermal solution

and that isnt a horribly bad temperature depending on which chip it is
you have to keep it in perspective, maybe it dies a year or even two earlier
but that is still a few years away, on the other hand if the chip has a latent defect already
a little more temperature could seriously impact its life expectancy
since its typically an exponential scale as you progress it get much worse much quicker
you place your bets and take your chances ;)
you might have a "golden chip" and it still might last as long as the "norm"
even with the higher temperature

but I wont discourage you from reducing your temperature :p
lower is always better
 
as a rule of thumb for each 10°C (18°F) temperature rise reduces component life by 50%*.
Conversely, each 10°C (18°F) temperature reduction increases component life by 100%.
Click to expand...

so what is the life expecancy of say, a barton chip for example at 50°C ???
5 years??

i mean, i have never seen a cpu die before.. i have a p200 from 8 years ago that still runs strong..


can you expect a chip to die in 9 months if it runs at 60°C for that whole time? or not really?
 
scottatwittenberg said:
so what is the life expecancy of say, a barton chip for example at 50°C ???
5 years??

i mean, i have never seen a cpu die before.. i have a p200 from 8 years ago that still runs strong..


can you expect a chip to die in 9 months if it runs at 60°C for that whole time? or not really?
Click to expand...

that confuses me. that implies theres a starting point...what temp is that?

/edit: i see, 50. yeh Id assume they mean 5 years @ 50C
 
does the actual cpu temp matter more then the cpu diode on motherboard monitor ? Which one should I focus more on.

My XP-M Barton 2500+ is runnin at 42c idol and about 48-50 load. The CPU Diode is a 44c idol and 50-65s load! Should I be scared?
 
scottatwittenberg said:
can you expect a chip to die in 9 months if it runs at 60°C for that whole time? or not really?
Click to expand...

chipmakers dont give out that information :p
and figuring it out would take someone far smarter than me
or someone alot richer
follow this link (and the links it contains) to really make your brain hurt :p

consider that a pentium II was made with 0.25 micron technology
and that we are now at .09 microns (90nm) over twice the number of atoms for electromigration to displace
and that electromigration is both a function of temperature and voltage
so, as the MHz has increased from 266MHz to 3400MHz...well

there are alot variables, most of which arent within our control
(design and fab)
but the temperature is one that is, how good a solution you adopt
and how far you push the voltage will largely determine how long your chip will live
(taking into account that not all chips are identical to begin with)
 
One thing you should note is that the diode temp is always going to read a lot hotter than the socket temp. This reading is from the core temp sensor which AMD implemented w/ the AXP's. On my A7N8X Deluxe there's about a 15-20C difference b/w the socket temp & the diode reading & the diode reading does not vary as drastically as the socket temp either (i.e., from idle to load temp). Many mobo manufacturers have dx'ed that diode reading for several reasons--1.) the diode reading is purported to be inaccurate w/ AXP's & 2.) b/c ppl. were bitching about the dramatic difference in temps when they moved from a socket temp based mobo to a diode based one. Many mobos only offer a reading from the socket sensor & if they utilize the diode @ all it's for CPU Overheat/Shutdown functionality in the bios. BTW, my A7N8X del. w/ an aircooled 2100 T'Bred @ ~2.3ghz (1.825V) reads presently @ 36 socket / 44 diode. This is in a warm room & I'm almost positive that this Asus board implements the C1 disconnect/Halt trick automatically. Under load I've seen diode temps of 55-60C. I wouldn't sweat the temps u stated---that's fairly par for the course from what I've seen for diode temps, under load. ;)
 
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