alexondrums

Just wondering at what temperature is it considered that a component is overheating?
Under load my CPU runs at about 60c+, and GPU around 65c, - it’s hot, but is it too hot?
My system seems stable enough and doesn’t crash. I would like to know what values to set the temperature thresholds at in the BIOS.

CPU: P4 ‘PresHOT’ 3.4GHz
GPU: Inno3D Geforce 7600 GST 128Mb PCI-e.

Thanks

HawMan

P4 Prescotts run hot as hell, so thats not hot, and your GPU tempreture looks fine.

for me, 80C is too hot for the GPU, and 70C is too hot for the cpu.

removed20608a

My Dell, from factory runs 82C idle to 86C 100%.
+/- 2C. It is designed that way.

A quick synopsis of Temperature versus Temperature cycling.

1: Temperature
Temperature, within design limits, is not the killer of integrated circuits.
90C is very acceptable with current processes.
Depending on where the sensor is in the IC, junction temperatures are routinely allowed to reach 125C. So, a sensor’s location within a given IC, or in this case, CPU, is just a “Relative” measure of “Junction” temperature.

2: Temperature Cycling
This is the killer of modern electronics!
Imagine a piece of metal in you hands.
Now, flex it back and forth, through a 5-degree angle.
When will it fatigue and break?
Now take that same piece of metal, and flex it back and forth through a 45-degree angle. When will it break?

Now, an IC, or in this case a CPU, is made up of dissimilar materials.

They all have different coefficients of expansion; they are in direct physical contact with each other. Because of this, as temperature changes, they “FLEX”.
If temperature is allowed to very routinely, then that constant flexing will result in physical fatigue, which results in IC failure.

The point,
Temperature is not the killer, within reason; temperature cycling magnitude is the killer.
Cool running CPU’s are a fallacy!
Simply put. Compare the routine idle temperature, to the 100% running temperature, the difference, is a direct prediction of CPU life.
Therefore I conclude:
With new modern PWM CPU fans, which proportionally control the speed, to regulate temperature, a higher than previous nominal temperature is allowed, due to tighter temperature regulation.
This will decrease the cost of the cooling unit, and prolongs the life of the CPU.

Hats off to Dell!

Ps, I changed heat sinks, fan, and thermal grease.
I ran Hmonitor and Speedfan.
Any PWM, i.e. proportional fan I tried, all ran the same tight temperature.
I.e.: designed!
To override the PWM speed control and to put a massive heat sink, and fan, to run cooler nominal temperature, is not always best. If the magnitude of temperature fluctuating is larger, then you have done your self a disservice.

end

removed20608a

I would love some feed back.

Aus_Karlos

Hmm i think you need to take another look at this. 90c is extreme.
65c is a max standard for all CPU's each "Core". The processor bridge, the join between the two cores has a higher temperature of about 90c
I had an E6750 2.66ghz run at 75c and within 12hrs (Max total On time was 8hrs) it fried and died completely.
Junction temps has a max temp of 100c before it melts. What ive heard off Intels CPUs. Not sure for AMD.

Depending on the GPU they have a range of temps
Nvidia 6 series = Core max of 65c-70c
Nvidia 7 Series = Core max of 65c-75c
Nvidia 8 Series = Core max of 75c-85c (However Nvidia say it can reach 125c and be fine as long as it doesnt stay like that for ever.) The only way to archive 125c is to remove the heatsink/fan and run at full load. lol

removed20608a

Who set that standard?
The Fan and heat sink manufactures?
LOL
90C case temperature, depending on the heat transfer coefficient of junction to case, is very acceptable.
"Temperature Fluctuation Magnitude" is the killer of a CPU, Not the "Nominal" temperature,.
:-)

PS,
I love experienced debate.

125C, is "junction temperature", NOT Case!
An IC, has semiconductor junctions, every manufacture gives specs, that relate "Junction" temperature to the case temperature.
90C is VERY acceptable today as a case temperature.
HOWEVER,
The constant changing of temperature is a killer.

The World is Dynamic, NOT Static.
At the least, live "Second Order".

removed20608a

To Alex,
I feel your temperatures are fine.
Do not worry.