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My talk w/ Intel about TAT - Page 12

post #111 of 117
Just a quick update... I set the BIOS alarm to go off at 60C and OC the E4400 to 3.1Ghz, when Speedfan's Temp2 reading hit 60 the BIOS alarm went off, seeming to confirm that this is indeed the t_case temp. Not sure why it didn't go off last time, maybe I actually forgot to turn it on lol.

I am also a bit wierded out how the idle temps that Speedfan gives seem only a couple of degrees above ambient, but the BIOS reading usually seems higher, although its hard to compare obviously.
post #112 of 117
Quote:
Originally Posted by amd_hardsoftware View Post
nice find, however i saw someone else on Overclock.net put a physical temp probe on CPU and measure TAT accuracy, it wasa accurate to within 1-2C. teh CPU he used was an OCd 6300 C2D
That might also be because (I think) TAT measures it from the center of the core, and the temp probe won't feel the same heat.
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post #113 of 117
Okay, I've been asking around and apparently it's quite normal for the C2D t_case temps to be only 2 or 3 degrees above ambient when its idling due to better onboard power management, so the OP's theory doesn't need to be chucked out just on the basis of low idle temps.
post #114 of 117
Thread Starter 
I think some of you are missing the main point to all of this..

Using DTS is pointless... We need to look at the T_case.. That is what Intel says.. Finding the T_case is rather tough tho..

DTS is used for throttle control.. When the cpu reaches a set DTS the cpu will be throttled back to conserve power and reduce heat.. DTS was not made to be used as a temp monitor for the end user.. This is because there is no way to have MAX DTS..

The idea of pushing your cpu till DTS shuts it down is NOT a good idea.. DTS may and most likely does have a higher tolerance than the T_case... Meaning that if you go 80C TAT, your T_case is most likely over 70C.. Way beyond the max of 61C...

When I reach 70C Orthos load and reading TAT temps,my T_case (as read by everest) is at 61C and at the same time I am 67C under Orthos.... I have read many posts about Orthos being more accurate than TAT when reading the DTS..
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post #115 of 117
Quote:
Originally Posted by MuNcHeR23 View Post
I think some of you are missing the main point to all of this..

Using DTS is pointless... We need to look at the T_case.. That is what Intel says.. Finding the T_case is rather tough tho..

DTS is used for throttle control.. When the cpu reaches a set DTS the cpu will be throttled back to conserve power and reduce heat.. DTS was not made to be used as a temp monitor for the end user.. This is because there is no way to have MAX DTS..

The idea of pushing your cpu till DTS shuts it down is NOT a good idea.. DTS may and most likely does have a higher tolerance than the T_case... Meaning that if you go 80C TAT, your T_case is most likely over 70C.. Way beyond the max of 61C...

When I reach 70C Orthos load and reading TAT temps,my T_case (as read by everest) is at 61C and at the same time I am 67C under Orthos.... I have read many posts about Orthos being more accurate than TAT when reading the DTS..
It's funny that you said that stuff about DTS because the people I presume you are saying it to gave exactly the same info.

Why are you saying that finding t_case is difficult? Hasn't it just become a whole lot clearer at this point in the thread?
post #116 of 117
Thread Starter 
Quote:
Originally Posted by illegalbrain View Post
Why are you saying that finding t_case is difficult? Hasn't it just become a whole lot clearer at this point in the thread?
I hope it's a little clearer.. T_case can be tough to determine b/c software runs different on different systems.. Speedfan for me reads too cool under T_case.. Everest however reads well.. Others are opposite of that and say Speedfan's CPU2 reads what should be T_case.. What is tough is determining what one is reading correct for you..
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post #117 of 117
Quote:
Originally Posted by MuNcHeR23 View Post
I hope it's a little clearer.. T_case can be tough to determine b/c software runs different on different systems.. Speedfan for me reads too cool under T_case.. Everest however reads well.. Others are opposite of that and say Speedfan's CPU2 reads what should be T_case.. What is tough is determining what one is reading correct for you..
Sorry if you already mentioned them, I don't want to trawl the thread again, but what are your comparative Speedfan and Everest temps? Cheers.
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