trentcys

唔怪得一直唔肯公佈detail啦~

http://www.tomshardware.com/news/intel-dts-cpu,6300.html

引用:

...Due to increasing inaccuracies in the readings taken from the DTS however, as the temperature moves further from this threshold (what Intel calls "slope error"), you can only assume decent measurement accuracy when you are running at a temperature equal to the maximum Tjunction value. This is extremely rare, because unless you did not mount your heatsink correctly, or you are running at extremely high voltages with insufficient cooling, you will probably never reach this temperature. RealTemp is currently the only software which attempts to offset these increasing sensor inaccuracies. Hopefully other software developers will follow suit.

But the problems don’t stop there. In fact, Intel stated in the presentation that Tjunction Max itself is subject to errors in calibration, and varies slightly from part to part. Also, Intel officially confirmed that the sensors can "bottom out" or "get stuck" at lower temperatures, something that several users have noticed for some time. The sensors are riddled with problems and this makes it extremely difficult to produce meaningful data from them.

“Intel’s presentation doesn’t give us any formulas or anything that anyone can agree on or use to create a formula to convert this DTS data into temperatures,” said the RealTemp developer.

For your reference, here are the official values that Intel provided in their presentation:

Tj Max for 45nm Desktop CPUs
Processor                                Tjunction Max
E8000 and E7000 series        100C
Q9000 and Q8000 series        100C
QX9650                                95C
QX9770                                85C

Unfortunately Intel did not disclose any maximum Tjunction values for their 65nm parts, which is both disappointing and strange. The 65nm CPUs precede its 45nm parts, and to us it seems logical to release information about prior technology rather than current technology...