temp monitoring diodes

[Rod Speed]

(e-mail address removed) wrote

Rod Speed wrote

That's true, as far as it goes. The CPU will be hotter than the
AIR, and PCB immediately it, but not necessiarialy hotter than
the area where the second temperature sensor is located.

In practice the secondary sensor isnt put where there
will be significant heat dissipated with PCs, for a reason.

And given that motherboards have more than one hot compenent.

None that get hotter than the cpu.

Some even requiring additonal heatsinks and fans.

And the secondary diodes dont get put there.

By no means. I had a thermaltake cooler on my Athlon 2600+,
that caused a drop in CPU temperature, after the new cooler,
the CPU tempearture was below system temperature.

Dont believe it. The cpu temp wasnt being measured properly.

 

[Rod Speed]

No Rod, it's common.

Like hell its common for the system temp to
be 10 degrees higher than the cpu, gutless.

Any modern board with the temp sensor in the
north or southbridge and a non-P4-Prescott, for
example, might be expected to behave this way
when circumstances are as I described previously.
Bullshit.

Note that you dont' have to agree for it to be true,

Never ever could bullshit its way out of a wet paper bag.

and unless the OP's temp readings are reversed,

Corse they are.

this is yet another example of it happening.

Nope, they're reversed.

It is possible to determine it by observing the change in temp when
the CPU is changing state from mostly idle to mostly (nearer full) loaded.

Duh.

 

[paulmd]

(e-mail address removed) wrote


In practice the secondary sensor isnt put where there
will be significant heat dissipated with PCs, for a reason.


None that get hotter than the cpu.

Sure they can, the CPU generates more heat, but the CPU also gets
better cooling.

And the secondary diodes dont get put there.

Sure they do. They're usually labelled as the temp sensor for that
component, however.

Dont believe it. The cpu temp wasnt being measured properly.

It was well above system temp before, in fact it was downright toasty,
which is why I bought the cooler to begin with. And the fingers on the
heatsink test confirmed it, before and after.

 

[kony]

In practice the secondary sensor isnt put where there
will be significant heat dissipated with PCs, for a reason.

Untrue, "IF" there's a discrete second sensor, it may show
up nearer the heat sources on one board, further away on
others. Somewhat arbitrary and anything BUT a deliberate
attemp to keep away from these sources.

It's all beside the point though, most boards don't have
discrete temp sensors, instead relying on a readout provided
from one of the chips instead.

None that get hotter than the cpu.

Wrong.
Northbridge can easily get hotter than a CPU using HALT
cooling, particularly the newer generations of flipchip,
chipsets and any of the more efficient CPUs (mainly meaning,
not a Prescott).

And the secondary diodes dont get put there.

There usually isn't a secondary discrete diode.
Primary and secondary are usuallly in chips, rarely a 2nd or
3rd is a thermistor.

Dont believe it. The cpu temp wasnt being measured properly.

Actually if using the in-die diode, it's more likely than
any other to be accurate, providing the software is reading
the right input for it.

 

[kony]

Like hell its common for the system temp to
be 10 degrees higher than the cpu, gutless.

If you understood that "system temp" is rarely ever an
accurate indication of the chassis ambient temp, then you'd
understand.

You don't bother to take temps though do you?
I do. It's trivial to stick a probe into free-air in a
system and compare to the system temp report. Try it
sometime.

 

[Rod Speed]

(e-mail address removed) wrote

Rod Speed wrote

Sure they can,
Nope.

the CPU generates more heat, but the CPU also gets better cooling.

Not with a 10 degree difference.

Sure they do. They're usually labelled as the
temp sensor for that component, however.

Not when there is no other system temp, just two temps reported.

It was well above system temp before, in fact it was downright
toasty, which is why I bought the cooler to begin with. And the
fingers on the heatsink test confirmed it, before and after.

Still dont believe it was 10 degrees below the system temp.

 

[Rod Speed]

Wrong.

"IF" there's a discrete second sensor, it may show up nearer
the heat sources on one board, further away on others.

He aint got a discrete second sensor.

Somewhat arbitrary and anything BUT a deliberate
attemp to keep away from these sources.

It's all beside the point though, most boards
don't have discrete temp sensors,

Including his, so this is more of your pathetic excuse for bullshit.

instead relying on a readout provided from one of the chips instead.

Which is the case with the system being discussed. Funny that.

Nope.

Northbridge can easily get hotter than a CPU using HALT cooling,
particularly the newer generations of flipchip, chipsets and any of
the more efficient CPUs (mainly meaning, not a Prescott).

Bullshit with a 10 degree difference.

There usually isn't a secondary discrete diode.

Never said a word about discrete diodes.

Primary and secondary are usuallly in chips,
Duh.

rarely a 2nd or 3rd is a thermistor.

Not in this case, so completely irrelevant.

Actually if using the in-die diode, it's more likely than any other to
be accurate, providing the software is reading the right input for it.

Mindless silly stuff. There is more involved than its location.

 

[Rod Speed]

If you understood that "system temp" is rarely ever
an accurate indication of the chassis ambient temp,

Never said it was, child. Didnt even mention the chassis, child.

then you'd understand.

I understand fine that you are desperately attempting to bullshit your
way out of your predicament and fooling absolutely no one at all, child.

You don't bother to take temps though do you?

Guess which pathetic little know nothing prat has
just got egg all over its pathetic little face, yet again ?

I do. It's trivial to stick a probe into free-air in a system
and compare to the system temp report. Try it sometime.

Dont need to thanks, child. Been doing that since
before you were even born very likely thanks child.

 

[meow2222]

(e-mail address removed) wrote

Maybe he would have said that it had one of those if it had one of those.

I expect so. It may be time for a refresher course on basic physics.


NT

 

[meow2222]

Or maybe he would have said that it had that if it had had that.

Be a man and accept you were wrong.


NT

 

[meow2222]

(e-mail address removed) wrote

In practice the secondary sensor isnt put where there
will be significant heat dissipated with PCs, for a reason.

None that get hotter than the cpu.

Maybe you could explain how this works then. CPUs need to be run at
relatively low temps to preserve high speed performance, whereas volt
regs and so on can happily run upto 175C. Cost is important in the
competitive world of computer parts, and lower design temps mean more
silicon and more heatsinking. So why would I, or anyone else designing
a mobo, use a volt reg design temp limit below that of the CPU? In what
way did I go wrong all these years when designing psus?


NT

 

[meow2222]

(e-mail address removed) wrote


Bullshit. Both sets are reasonable in an
air conditioned room with the cpu idling.

reasonable to expect the OPs CPU to be 10 deg below case? Possible but
unlikely. Reasonable to assume the OP is running ac? I wouldnt assume
either, hence a quick hand on cpu confirmation would be sensible.

Unlikely to be meaningless when they are quite similar.
illogical


Nope, because that wont indicated if the sensors are reversed in the display.

its not meant to, its meant to check cpu temp is ok. Sorry I thought
that was obvious.

Separate matter entirely to his question, whether they are likely reversed.

If temp sensor outputs cant be relied on, as is the case here, this is
right on the mark. You might have guessed right about the readings
being swapped, but its a fool that would rely on it.


NT

 

[meow2222]

Guess which pathetic little know nothing prat has
just got egg all over its pathetic little face, yet again ?

No need to guess, all the evidence is here.


NT

 

[Rod Speed]

(e-mail address removed) wrote

Rod Speed wrote

Be a man and accept you were wrong.

Nothing to 'accept', child.

 

[Rod Speed]

I expect so. It may be time for a refresher course on basic physics.

For you clowns, yes.

 

[Rod Speed]

(e-mail address removed) wrote

Rod Speed wrote

Maybe you could explain how this works then.

You're too stupid to even be able to grasp that if he was
actually using a peltier, he would have said so, child.

CPUs need to be run at relatively low temps
to preserve high speed performance,

Pity that the 30C being discussed doesnt qualify, child.

whereas volt regs and so on can happily run upto 175C.

Pity that the system temp is allegedly 40C or so, child.

Cost is important in the competitive world of computer parts,
and lower design temps mean more silicon and more heatsinking.

Irrelevant to what was actually being discussed, whether the
cpu temp will be 10 degrees below the system temp, child.

So why would I, or anyone else designing a mobo, use
a volt reg design temp limit below that of the CPU?

Pity you aint established that the temp he
is seeing is the voltage regulator temp, child.

In what way did I go wrong all these years when designing psus?

You had your dick in your hand all that time and are now completely blind, child.

So stupid that you havent even noticed that not one motherboard actually bothers
to have a diode to allow the monitoring of the voltage regulator temp, child.

 

[Rod Speed]

(e-mail address removed) wrote

Rod Speed wrote

reasonable to expect the OPs CPU to be 10 deg below case?
Nope.

Possible

Nope, not unless he is using a peltier for cpu cooling, child.

but unlikely.

In spades when the OP didnt even mention any peltier, child.

Reasonable to assume the OP is running ac? I wouldnt assume
either, hence a quick hand on cpu confirmation would be sensible.

A quick hand check isnt likely to be able
to distinguish between 30C and 40C, child.

Makes a lot more sense to make the cpu work
harder and see which temp increases instead, child.

illogical

pathetic excuse for bullshit, as always in your case.

its not meant to, its meant to check cpu temp is ok.

No need for that when both of those temps are fine, child.

Sorry I thought that was obvious.

Never ever could bullshit its way out of a wet paper bag.

If temp sensor outputs cant be relied on, as is the case here,
this is right on the mark. You might have guessed right about
the readings being swapped, but its a fool that would rely on it.

Perfectly reasonable to rely on it with both temps being fine for the cpu
temp, and completely trivial to check if they are reversed or not, child.

Even someone as stupid as you should be able to manage that, if someone
was actually stupid enough to lend you a seeing eye dog and a white cane,
given that you have clearly wanked yourself blind years ago, child.

 

[Rod Speed]

(e-mail address removed) wrote

Rod Speed wrote

No need to guess, all the evidence is here.

Yep, it got done like a dinner, as always.

You in spades, child.

 

[NZLamb]

Rod: When you are in a hole, the only way out is to stop digging, child.

NT: Don't fight with a pig in the mud; you get dirty and the pig enjoys it.

Seriously guys...

 

[CBFalconer]

(e-mail address removed) wrote
.... snip ...

You're too stupid to even be able to grasp that if he was
actually using a peltier, he would have said so, child.
.... snip ...

Pity that the 30C being discussed doesnt qualify, child.
.... snip ...

Pity that the system temp is allegedly 40C or so, child.
.... snip ...

Irrelevant to what was actually being discussed, whether the
cpu temp will be 10 degrees below the system temp, child.
.... snip ...

Pity you aint established that the temp he
is seeing is the voltage regulator temp, child.
.... snip ...

You had your dick in your hand all that time and are now
completely blind, child.

So stupid that you havent even noticed that not one motherboard
actually bothers to have a diode to allow the monitoring of the
voltage regulator temp, child.

Nothing but invective. I tried letting you out of the PLONKbox,
but that was obviously a mistake. Back you go.