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My talk w/ Intel about TAT - Page 5

post #41 of 117
Quote:
Originally Posted by kevg73 View Post
i read it and it only confused my more. he said something about the DST or something like that but never explained what the DST was.
DTS = Digital Thermal Sensor.

I might have linked the 2nd page but if you go back to page one or the start page on this LINK you'll see, sorry
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post #42 of 117
look at the last post of mine and tell me what you think.
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post #43 of 117
Thread Starter 
LOL...I really never expected this kind of response..its good..


grunion--

i noticed that too. I have seen some say TCC instead of T_junction..I'm still researching and learning about this..

To clear up the other two questions about using speedfan..

For reasons i do not know, Speedfan reads Core1 and Core0 correctly in every system i have seen using C2D...IDK if it reads the T_case or T_junction..Most tell me the T_case...I think it is, b/c i am pretty sure Temp2 is my NB as it only goes up slightly in temps..TEMP1 and TEMP3 are not connected on my mobo..


my head hurts
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post #44 of 117
I should have read this yesterday. Last night, I lapped my CPU believing the TAT's high basal temp, watching finale of recorded Heroes and Lost.

This is great news. I don't have to worry about burning basal temperature. Now that I am relieved, I might try more o/c. Thanks.
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post #45 of 117
Okay, so here's my problem with what (from what I have read and understood) you are saying.

CoreTemp:

Core0:29C
Core1:30C
Tjuction: 85C

SpeedFan:

Core0: 29C
Core1: 30C

TAT:

Core0:32C
Core1:36C

Now, could this be because the temp programs are all updating their information at different rates? TAT seems to shift constantly, CoreTemp updates fast, but only spikes slightly and is most of the time on the ball with SpeedFan.

So, what does this mean? Which do I trust/watch? Or are they all more-or-less correct?

(oh, and I love well placed AC vents. Air is running and I ilde at 30C @ 3.6ghz ^_^)
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post #46 of 117
Quote:
Originally Posted by MuNcHeR23 View Post
Ok this is starting to make sense to me...and this may be long winded, but its worth the read..

Intel C2D's have 2 different TCC's.. Some are 85c others are 100c...So what that means is 85c or 100c is the max that cpu can go at the T_junction... You can use CoreTemp and the T_junction reading it gives will show only one of the two..TAT was made for 85c TCC's (Pentium M)....So when a 100c TCC shows up it reads it 15c higher...

If you have a 85C cpu, then TAT is most likely correct... If you have a 100c cpu then TAT is 15 too high...

This makes sense to me now... At load with speedfan i hit 50c that is 65c under TAT... However I have a 100c TCC...So if i remove the 15c from TAT i get what Speedfan reads...

Now we are not worried about reading the T_junction anymore... We need the T_case reading instead.. So if i run my cpu at its max T_case of 61.4C, that would leave TAT reading 76.4C... However this is not too high... Mine being a 100c TCC...

My suggestion is this

Run CoreTemp to find your TCC (T_junction)
Find your T_case max (from my first post, second link)
Run speedfan and TAT together to verify what i have said
Keep speedfan below your T_case max


woot
Soooooooo, i need to find my T_case max? By going to that link?
I can't even find it, can't even figure out which processor is mine. Anyone want to help me out... i hate intel's site.. E6600 L632A740.

So if mine ends up having a T_case of 100C, then TAT, CoreTemp, and SpeedFan are 15C too high since they read off the same thing right?

This would make since, because for a lapped TT120 i have always thought i am little to hot.

+rep if u can find my t_case lol
post #47 of 117
Better still, who wants to explain more about tCase other than it's the max rated temp to ensure 100 percent Stability? Is there anything else to really know about it?

I noticed that my tCase is actually higher than the 6700 and 6800 Quad Cores. O_o; That doesn't seem right. At best, they should be even, right?
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post #48 of 117
Thread Starter 
Quote:
Originally Posted by trendy View Post
Okay, so here's my problem with what (from what I have read and understood) you are saying.

CoreTemp:

Core0:29C
Core1:30C
Tjuction: 85C

SpeedFan:

Core0: 29C
Core1: 30C

TAT:

Core0:32C
Core1:36C

Now, could this be because the temp programs are all updating their information at different rates? TAT seems to shift constantly, CoreTemp updates fast, but only spikes slightly and is most of the time on the ball with SpeedFan.

So, what does this mean? Which do I trust/watch? Or are they all more-or-less correct?

(oh, and I love well placed AC vents. Air is running and I ilde at 30C @ 3.6ghz ^_^)

You'll find that with any software and any cpu...usually 1-3c differences.. But it means that TAT CoreTemp and SpeedFan will all read pretty much correct for you..b/c of your T_junction being 85c..



I think we are missing the big point here.. Intel says read the T_case and pretty much stay under 60c with it.. They don't ever say read from the T_junction..


Quote:
To obtain the maximum operating temperature of your processor please use it’s
sSpec number (SLXXX) at the following website:
http://processorfinder.intel.com/default.aspx

The sSpec number is located in the box of the processor in a white sticker, it
is the last five digits of the Product code line (SLXXX), the other way to find
the sSpec number is on top of the processor, for that you will need to remove
the heat-sink and the thermal interface material.

We recommend setting any thermal alarms about three (3) degrees below the
maximum recommended temperature for the processor. We do not have a normal
operating temperature for the processor as this temperature will vary depending
on the chassis and other hardware installed on the system as well as the actual
load the software is placing on the processor.
The above speaks of the Thermal Specification...You can find it with in that link and any cpu... If you click on the blue highlighted THERMAL SPECIFICATION it reads as

Quote:
Thermal Specification: The thermal specification shown is the maximum case temperature at the maximum Thermal Design Power (TDP) value for that processor. It is measured at the geometric center on the topside of the processor integrated heat spreader. For processors without integrated heat spreaders such as mobile processors, the thermal specification is referred to as the junction temperature (Tj). The maximum junction temperature is defined by an activation of the processor Intel® Thermal Monitor. The Intel Thermal Monitor’s automatic mode is used to indicate that the maximum TJ has been reached.
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post #49 of 117
did you look at my post? is the t_case the CPU reading in speedfan (the first one)?
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post #50 of 117
Yes but again TJunction is just the throttle'ing max of the core. The TJunction delta is the current DTS temp - TJunction showing how much temp remaining until throttle. CoreTemp shows it perfect for my C2D E6600 so I don't see all the hoopla about it. Not that your thread and info is worthless but the standard keep it under 60c rule still applies.
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