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Max safe temperature for E6600? - Page 3

post #21 of 27
Quote:
Originally Posted by bicolormoth
i run about 66C load, is that ok on e6300?
On TAT it's perfectly fine. With Speedfan you should be under 60C
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post #22 of 27
Quote:
While I am certianly not going to state the "safe" temp of these CPUs is 85c, the stated 60.1c temperature threshold is stated by Intel to be measured at the center of the IHS. Given that, the must be some variance as there is little chance that the center IHS can be 60c if the Core is 60c as well.

I have seen the 85c number thrown out a lot but never been able to get concrete proof of it.


Regardless, the threadstart is quoting triple digit temperatures, are we assuming these are in F? As no one has acted shocked at 90 degree idle temps yet
The stated temperature that is specified on the Intel Processor Finder website has no relevance to what I stated in my previous post

Being a hardware engineer with contacts inside the Intel corporation I received a copy of the Thermal Information regarding Core 2 Duo far before it was released to the public, even though I am only 17 years of age.
This information, even outside of Non-disclosure Agreement (NDA), can not be disclosed to personnel outside of partners, as far as I am aware.

The processor limitation for the processor core of Intel Core 2 Duo processors is 60.1C approximately given used voltage and electron flow i.e. current.
Obviously as the temperature limitation on the Intel website is in regards to the IHS. Logic therefore states that both the core and IHS must not exceed a thermal level of 60.1 degrees Celsius.

The maximum thermal level is less dependant on the processor in question, the thermal limit is in regards to the process type used to create the processor. In this case a 65nm process was used. With smaller transistors comes more generated thermal temperature as they are in greater number in most scenario's of manufacturing processors.
In process creation terms usually the smaller the process that is used to create a electrical device the lower the maximum rated thermal status is.
Note: This does not imply to all hardware devices, this just is an overall fact for electrical devices for arithmetic logic i.e. in this case a Central Processing Unit.

As far as I am concerned the thread starter is quoting the temperature's in degrees Celsius. Degrees Kelvin (K) is impossible in this case, and most applications use Celsius (*C) as default temperature

Quote:
Given that, the must be some variance as there is little chance that the center IHS can be 60c if the Core is 60c as well.
The Integrated Heat Spreader (IHS) thermal status can be exactly the same as the processor core in many circumstances
If you consider that a large amount of the thermal temperature comes from transistors around the core (not in the core itself) then the heat itself will spread around the Intel processor component.
In cases where air cooling is used the temperature itself will displace around the core.


Thermal shielding reduces the temperature of the core, and with dual core a fairly strong heat shielding mechanism is used.
As the heat shield mechanism is in place the core temperature will be reduced due to shielding, therefore the thermal temperature of components outside the core will be theoretically hotter as they have no form of heat protection mechanism.
If you take this factor into account it is logical to derive at the statement:
In many cases both the core temperature and the Integrated Heat Spreader temperature will be within a particular range of each other, including the approximate same thermal level.

As to the 85C part
Many components within the Core 2 Dup processing Unit are capable of easily withstanding thermal levels of 85C and greater, however others are not capable of doing so.

Ok let's go through this nice and easy
Quote:
In process creation terms usually the smaller the process that is used to create a electrical device the lower the maximum rated thermal status is.
If we follow this rule then:
Northwood (130nm): ~73.4C
Prescott/Prescott 2M (90nm): ~66.6C
Conroe/Allendale (65nm): ~60.1C-62.4C

Looks logical to me, 85C would be out of sync with this trend. As well as disagreeing with a Thermal report from the manufacturer

Hope this helps
post #23 of 27
Quote:
Originally Posted by Murlocke
Uhh guys he said 80 F not 80C...
I could have bet he meant Farenheit and not Celsius. Btw, does anybody know how to transform from one to another?
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post #24 of 27
Ahh missed that, they are indeed all in Fahrenheit
They are acceptable then

To convert a Fahrenheit temperature into Celsius you need to use this formula

Celsius = (5/9)*(Fahrenheit-32)
post #25 of 27
Quote:
Originally Posted by The_Manual
The Integrated Heat Spreader (IHS) thermal status can be exactly the same as the processor core in many circumstances
If you consider that a large amount of the thermal temperature comes from transistors around the core (not in the core itself) then the heat itself will spread around the Intel processor component.
In cases where air cooling is used the temperature itself will displace around the core.

<snip> therefore the thermal temperature of components outside the core will be theoretically hotter as they have no form of heat protection mechanism..


Good points. Didn't think of it that way.

Quote:
Originally Posted by The_Manual
If we follow this rule then:
Northwood (130nm): ~73.4C
Prescott/Prescott 2M (90nm): ~66.6C
Conroe/Allendale (65nm): ~60.1C-62.4C

Looks logical to me, 85C would be out of sync with this trend. As well as disagreeing with a Thermal report from the manufacturer
Agreed. I think the 85c belief stemmed in some response to the previous generation temperatures being read from a different location, and the assumption that therefore the "core" temperatures have always been higher. I myself had that thought as evidenced from my previous post, however I was doubtful as to the range given, 25c difference is pretty extreme.
post #26 of 27
Quote:
Originally Posted by The_Manual View Post
If we follow this rule then:
Northwood (130nm): ~73.4C
Prescott/Prescott 2M (90nm): ~66.6C
Conroe/Allendale (65nm): ~60.1C-62.4C

Looks logical to me, 85C would be out of sync with this trend. As well as disagreeing with a Thermal report from the manufacturer
Yes, those are the official safe thermal guidelines as stated by Intel. I would like to add that it doesn't mean those are the max temperatures for the CPU. According to Intel's own documentation for the Conroe/Allendale cores, ~60.1C is the maximum sustainable temperature. This doesn't mean it's the maximum temperature. It just means that the CPU temps should be under ~60.1C most of the time as long term exposure to higher temps can shorten the CPU's lifetime. Bursts and some usage (within reason) over 60.1C shouldn't cause any damage. This is an issue for CPUs that idle around or above 60.1C, or computers that frequently operate at load that puts it over the 60.1C threshold. Basically, if it's going over ~60.1C, you should probably take action to play it safe, but it's not something that you need to do immediately or risk damaging the CPU.

Also according to the documents, here are the maximum thermal guidelines as measured using the TCore sensors (not the TJunction). TJunction temps vary but should generally be ~15-18C lower than TCore temps.
60-65 = warm
65-70 = warm
70-75 = hot
75-80 = very hot
80-85 = Causes throttling to bring the temp down
85+ = Cutoff (Shut down)

So if you're temps (according to Core Temp, Intel's TAT, or Speedfan) max out under full load in the low 60's, then I wouldn't be concerned unless you run tasks that max out the cpu at all times (which is actually not as simple to do in software with modern CPUs as it was in the past). More/better cooling won't hurt either. If you're getting in the low 70s or higher, then I'd be concerned and would definitely look into getting something to better cool it.
post #27 of 27
the TJ max on e6600 is 85 degrees says everest ultimate edition and that is usualy right.
with my new zalman 9900 cooler i have mine at 3.2ghz up from 2.4 and it runs at 43degrees after 6 hours of full load with the fan on quiet mode smile.gif its an awesome cooler seeing that on 2.4ghz with the stock fan it did 38 degrees ON IDLE! lolz
Edited by megaspeed2 - 2/27/11 at 9:01am
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