PDA

View Full Version : ASUS G750JX CPU Temperatures



ultimazlitezjc
05-11-2014, 12:58 PM
i sent the laptop on the service center and let them check my overheating problem, they told me that they encountered 0 problems on stability. what they checked was not the temperature but rather stability, and got pissed and went home.

i think overheating is more prone on our country because of the ambient temperature, so here is my problem now, i don't know if someone is experiencing this too, my temperature range changes.. as you can see on the pictures below

36607
as you can see my normal CPU temperature range is 0-97C

36608
here is the stress test from the 0-97C, only core 3 throttles due to too much heat (think its OK because of our temperature now at the country) it doesn't let my CPU exceed 97C

36609
now in this picture my temperature range lowers to 0-85C which is i do not know if its normal, it changes

36610
and the stress test from this range is that it prevents also the CPU to reach the 85C mark.


i don't why it is changing, i am seeking advice/opinion or fix if this is really a problem

hmscott
05-11-2014, 01:24 PM
Hey ultimazlitezjc, welcome back :)

It has been a while since your last posting about Throttling on your Core 2 in the Overclocking thread:
http://rog.asus.com/forum/showthread.php?34297-4700HQ-overclocking&p=395990&viewfull=1#post395990

I don't know what to say, except you still have the same problem, but if they are telling you you have to live with it, I guess that isn't solving the problem so much as telling you they won't fix it.

Can you return it, for your money back? If they won't cooperate, perhaps that is the only choice left.

You could continue to use it, and it might never give you a problem, but if it does eventually cause you stability problems, at least you have the visit to the repair facility on record, and all the data you collected.

Have you tried a stress / temperature run inside an air-conditioned office / building? Get one with the temps really low, and let your laptop sit for a while in it to cool off, then do the stress run and see what your high temps are, and if you throttle.

What is the difference in the runs with 84c max and 97c max? There must be something different to get such widely different temperature results for the same stress runs - they are the same, right?

ultimazlitezjc
05-11-2014, 01:40 PM
Hey ultimazlitezjc, welcome back :)
Have you tried a stress / temperature run inside an air-conditioned office / building? Get one with the temps really low, and let your laptop sit for a while in it to cool off, then do the stress run and see what your high temps are, and if you throttle.

What is the difference in the runs with 84c max and 97c max? There must be something different to get such widely different temperature results for the same stress runs - they are the same, right?
i have tried and it only gives me 88C max
and there is no real difference on performance but rather the temperature cap that limits the CPU

hmscott
05-11-2014, 01:46 PM
i have tried and it only gives me 88C max
and there is no real difference on performance but rather the temperature cap that limits the CPU

ultimazlitezjc, are you saying that you now only see a max temp of 88c, and no longer see the 97c max temps?

Where were you when you saw the 97c max temps? In a closed hot room? What was the room (ambient) temp?

With the new low max temp indoors in an air-conditioned room, are you seeing thermal throttling kick in on CPU core #2? What is the ambient temp in the cool room?

ultimazlitezjc
05-11-2014, 02:01 PM
scott sorry i forgot
i tested it on an airconditioned room and i got 88C - this is in the range of 0-97C.

i cant test the lower temperature cap 0-85 because it only shows it at random.

hmscott
05-11-2014, 02:22 PM
scott sorry i forgot
i tested it on an airconditioned room and i got 88C - this is in the range of 0-97C.

i cant test the lower temperature cap 0-85 because it only shows it at random.

Somehow how aren't understanding each other :)

Either the temps are now low, or they aren't.

Are the temps still going high and core #2 is throttling?

Are you saying that randomly the same test, in the same ambient room temperature, is running much cooler? So the high temp runs only happen once in a while, and they happen in the same ambient room temperatures - so you aren't getting consistent temperature results for the same runs at the same ambient room temperature?

If you aren't getting consistent results, either something else is running in the background during the high temp runs, or mechanically / electrically the cooling system is randomly doing a bad job cooling the same heat output.

If you just leave the system run idle, and graph the CPU usage / temps, say with XTU, do you see something kicking on a regular basis running in the background, causing the base temperature to increase?

ultimazlitezjc
05-11-2014, 03:18 PM
from my post what i was saying

temperature cap 0-97C
i got 88C on stress test on an air conditioned room

temperature cap 0-85C
i cant test this one right now because this temperature cap is showing in random scenarios only

ultimazlitezjc
05-11-2014, 03:28 PM
at idle my core temperature was 47C at my room (not airconditioned)

temperature kicks in when the processor utilization goes up
36619

hmscott
05-11-2014, 04:00 PM
from my post what i was saying

temperature cap 0-97C
i got 88C on stress test on an air conditioned room

temperature cap 0-85C
i cant test this one right now because this temperature cap is showing in random scenarios only

"temperature cap 0-85C
i cant test this one right now because this temperature cap is showing in random scenarios only"

This is not clear. Are you saying you can't run the test? Or are you saying you can't run the test and get the same low temperature result? Do you now keep getting the high temperature result? And only occasionally get the low temperature result?

When doing tests you test for consistency. You want to get the same result each time you run a test. If you are getting different temperature results each time you run the test, then the results aren't consistent for a good reason, the question is, what is that reason.

The times you are getting the high result there must be something else running at the same time, raising the temperature over that you get when just the test is running. You need to get control of your system and know what is running.

Watch the processes running during the test run with the Task Manager. Use the Details tab, and sort by CPU usage - so that the top CPU processes are at the top of the list, and watch for things other than your stress test with high cpu usage.

If there is something else running while you are running the stress test, that would cause your temps during those runs to be higher than the temps you get when there are no other processes running during the test.

ultimazlitezjc
05-11-2014, 04:17 PM
for clarification

temperature cap 0-85C ->
by looking at my post is what i found weird, look at my 1st post picture number 1 and 3, as you can see there that my temperature range differs, that is what i'm asking about now...

that is why i am saying that i cant run the test at temperature cap 0-85C because it happens at random time
my CPU has 2 sets of temperature range... the 0-97C and 0-85C

hmscott
05-11-2014, 04:25 PM
for clarification

temperature cap 0-85C ->
by looking at my post is what i found weird, look at my 1st post picture number 1 and 3, as you can see there that my temperature range differs, that is what i'm asking about now...

that is why i am saying that i cant run the test at temperature cap 0-85C because it happens at random time
my CPU has 2 sets of temperature range... the 0-97C and 0-85C

Your CPU has 1 temperature range, not 2.

You need to re-read what I said a couple of times to get the clue you need to understand that your CPU doesn't have 2 temperature ranges.

Your CPU has one consistent response to the load presented to it, and it's temperature result is due to that load. If you increase the load, you increase the temperature, if you decrease the load you decrease the temperature.

The high temperature result during the stress test, there was something else running at the same time increasing the load on the CPU, raising the resulting temperature for that run.

The lower temperature result, there wasn't something else running at the same time, just the stress test was running, and so the load on the CPU was less, and the resulting temperature was less.

Does that help put it in perspective, why you are getting different temperature results "randomly"?

The Random Part is something else is also running at the same time as the Stress test. :)

ultimazlitezjc
05-11-2014, 04:39 PM
hmmmm... let put it this way no load...

try to look again on my 1st post which consisted of 4 screenshots

as you can see on screenshot 1 and 3, i hovered the mouse on the CPU Temperature Core temperature...

as you can see also on both screenshots i just started XTU at that time, no stress test or anything...

and now i was pointing out that on screenshot 1 and 3 that there was a difference on the temperature ranges, which i find weird because i think that every CPU has a set of Temperature range that is registered on the PC

ultimazlitezjc
05-11-2014, 04:42 PM
and the results on this difference on temperature range is so much big

on the 1st screenshot
on stress test it will take me up to 97C for the CPU to throttle (usually core 2 and 3)

on the 2nd screenshot it
on stress test it will only take me up to 85C for the CPU to throttle

note:
this is not a 1 time scenario
it comes from a different time after rebooting my laptop it changes randomly

hmscott
05-11-2014, 10:51 PM
and the results on this difference on temperature range is so much big

on the 1st screenshot
on stress test it will take me up to 97C for the CPU to throttle (usually core 2 and 3)

on the 2nd screenshot it
on stress test it will only take me up to 85C for the CPU to throttle

note:
this is not a 1 time scenario
it comes from a different time after rebooting my laptop it changes randomly

Either the cooling system is failing randomly, causing the heat to not get exhausted, or something else is adding heat load to the laptop during the stress run - it may start after the stress run starts, so your system may look idle - and end before the stress run stops.

Is the fan stopping during the stress run? Or does it run at a high rate constantly all the way through the test, and somewhat past the end as it cools off the CPU?

The cooling system is a closed system, the only inputs are the heat from the CPU, the internal Disk and the rest of the laptop components in the path of the inake air, and the intake air temperature.

So unless the cooling fan is not running the same, the CPU load is increased putting more heat into the system to exhaust, the ambient temperature goes up hugely - or drops hugely, or the position of the laptop changes and in the hot run the heat from the exhaust is coming back into the intakes - reflecting off the back/sides of a wall.

There is a reason why the average / high temp during a run of the same stress test is higher sometimes than others, you need to figure out what is different :)

Are you watching the top CPU using processes during the runs? You need to actually see what is going on, not just guess. Keep the task manager running, in the Details tab, with the list sorted by CPU usage - and scroll to the top to see the top CPU usage processes.

ultimazlitezjc
05-12-2014, 06:22 AM
after the temperautre rise, the fan kicks in with a high speed, and after the stress test it gradually slows down as the temperature decreases, on

my stress test i had close all applications on the background, only XTU running

i also got the active cooling policy on the power plan

hmscott
05-12-2014, 07:33 AM
after the temperautre rise, the fan kicks in with a high speed, and after the stress test it gradually slows down as the temperature decreases, on

my stress test i had close all applications on the background, only XTU running

i also got the active cooling policy on the power plan

Which Power Plan?

ultimazlitezjc
05-13-2014, 07:37 AM
modified powerplan - balanced

hmscott
05-13-2014, 10:19 AM
modified powerplan - balanced

Cool. A little trick/tip, you can disable CPU Turbo mode, cooling things down even further, by setting the Max CPU % to 99% or less :)

Even though the min speed of the Haswell CPU is about 700mhz, I set the Min CPU % to 0%.

ultimazlitezjc
05-13-2014, 07:27 PM
hmmmaybe i'll try it:-)
as of now i am still confused about that temperature range:-(

hmscott
05-14-2014, 01:40 AM
hmmmaybe i'll try it:-)
as of now i am still confused about that temperature range:-(

Do you mean you don't understand why the temperature range isn't consistent? Why on one run it is Lower, and on another run it is Higher?

There is a reason for it, you just need to find out what is running, or not running, differently during the different runs. Or, what other inputs into the system are affecting the temperature, like the ambient temperature, air flow under / behind the laptop.

These aren't unsolvable mysteries, just pertinent facts you aren't aware of yet - after you understand what is going on by taking into account all the variables involved the mystery disappears and reality finds a home :)

ultimazlitezjc
05-14-2014, 07:23 AM
Cool. A little trick/tip, you can disable CPU Turbo mode, cooling things down even further, but setting the Max CPU % to 99% or less :)

Even though the min speed of the Haswell CPU is about 700mhz, I set the Min CPU % to 0%.
thanks for this tip, i really dont think theres so much difference between 2.4Ghz and 3.2Ghz on daily usage/common gaming, i rather stick to this, cpu stress test only goes up to 72C even at my room;)

ultimazlitezjc
05-14-2014, 07:24 AM
Do you mean you don't understand why the temperature range isn't consistent? Why on one run it is Lower, and on another run it is Higher?

There is a reason for it, you just need to find out what is running, or not running, differently during the different runs. Or, what other inputs into the system are affecting the temperature, like the ambient temperature, air flow under / behind the laptop.

These aren't unsolvable mysteries, just pertinent facts you aren't aware of yet - after you understand what is going on by taking into account all the variables involved the mystery disappears and reality finds a home :)

yeah i will further check this one, maybe i'll check this up during boot times, and monitor also the room temperature.. i dont know if the notebook detects heat on boot up it drops the temperature down to protect it, not sure just a guess:)

hmscott
05-14-2014, 08:03 AM
thanks for this tip, i really dont think theres so much difference between 2.4Ghz and 3.2Ghz on daily usage/common gaming, i rather stick to this, cpu stress test only goes up to 72C even at my room;)

Cool :)

It is a nice trick to enable when you are in a very hot environment, to keep things cool - especially for other laptops. Asus does a good enough job 99% (no pun intended) of the time, but even with the awesome Asus cooling there is a place for knowing how to reduce the load on the cooling system.

The other trick to use isn't supported by Asus G750 BIOS, to disable Hyperthreadng, it would be nice if Asus brought more of the great ROG desktop BIOS options to the Laptop BIOS.

You really don't need to worry about running too hot, you could run just fine at 100% CPU, including XTU max multi 36x,35x,34x,34x + 36x cache, and you won't have a problem. If the ambient temperature goes high, and the CPU starts heading too close to 100c, it will Thermal Throttle on it's own.

But, if it makes you feel better to keep the CPU stress low throughout it's life by running at reduced performance, then go for it :)

hmscott
05-14-2014, 08:07 AM
yeah i will further check this one, maybe i'll check this up during boot times, and monitor also the room temperature.. i dont know if the notebook detects heat on boot up it drops the temperature down to protect it, not sure just a guess:)

ultimazlitezjc, through the sensor for the CPU temperatures the G750 is in effect taking into account all the contributors to the heat load, including the ambient temperature. Desktop boards can trigger fans on ambient / board / cpu / extra sensors, but the G750 doesn't break out this info visibly in the BIOS, so we don't really know what mix of inputs it is using.

Let us know if you can track a difference in cause / effect introduced by significant ambient temperatures, that would be nice to know.

hmscott
05-14-2014, 08:07 AM
yeah i will further check this one, maybe i'll check this up during boot times, and monitor also the room temperature.. i dont know if the notebook detects heat on boot up it drops the temperature down to protect it, not sure just a guess:)

ultimazlitezjc, through the sensor for the CPU temperatures the G750 is in effect taking into account all the contributors to the heat load, including the ambient temperature. Desktop boards can trigger fans on ambient / board / cpu / extra sensors, but the G750 doesn't break out this info visibly in the BIOS, so we don't really know what mix of inputs it is using.

Let us know if you can track a difference in cause / effect introduced by significant ambient temperatures, that would be nice to know.

ultimazlitezjc
05-14-2014, 11:42 PM
ultimazlitezjc, through the sensor for the CPU temperatures the G750 is in effect taking into account all the contributors to the heat load, including the ambient temperature. Desktop boards can trigger fans on ambient / board / cpu / extra sensors, but the G750 doesn't break out this info visibly in the BIOS, so we don't really know what mix of inputs it is using.

Let us know if you can track a difference in cause / effect introduced by significant ambient temperatures, that would be nice to know.

ok i'll let you know if what are othercauses that can affect the system, ill start first with the ambient temperature i guess, running the system with a hot environment and running it on cold environment