Real Temp - New temp program for Intel Core processors

[rge]

I know we had all brought this up before at one time or another, but I am thinking all cpus have a roughly 26-30C difference between Tcase max and Tjmax, see the knowns below. Only one cpu unclewebb tested deviated from that, and that cpu came in both 60 and 70 range tcasemax, and I am thinking the factory worker that day said, oh ****, what stepping was that today? It would make sense for the gradients to be constant, in fact it would not make sense for them not to be.

Also you can see intel is clearly rounding tjmax numbers, compare those to actual tcase max. Intel does not care about absolute tjmax, but tcase they calculate to tenth decimal.

Processor--power(W)--Tcase max--Casing IR(idle)--Tjmax----absolute temps at tjmax (+/- few C according to intel)
E7x00-------65---------74------------------------------100
E8x00-------65---------72.4-----------95--------------100
Q9650-------95---------71.4---------------------------100
Q9000-------95---------71-----------------------------100
QX9650----130---------64.5----------------------------95
QX9770----136---------55.5----------------------------85

Q6600 GO--95----------71-------------95-------------100?
Q6600 B3 -105---------62.2-----------85--------------90?
E6850------65----------72-------------95-------------100?
E6700------65----------60.1-----------85?-------------90?
E6600------65----------60.1-----------85--------------90?

QX6800 GO-130--------64.5-----------90?-------------95?
(compare to QX9650 with known tjmax)

QX6800 B3-130--------54.8-----------80?-------------85?
(compare to QX9770)

E4400 L2--65-----------61.4----------85---------------90?
E4400 M0-65-----------73------IRx1 85 ? intel employee thinking it was L2 stepping day, or fluke?

And the formula from intel, suggests there is a constant gradient from tjmax to tcase, as now strongly suggested by same tjmax on both E8x00 and E7x00 despite one solder attach, the other adhesive attach and by quads proven to have same gradient tjmax to tcasemax as duo's, and the slight variance in absolute temps at tjmax intel just rounds out.

[JohnZS]

I like your thinking rge
It stands to reason that there would be a correlation between Tcase and TjMax.

Unclewebb
2.75 rocks
This screenshot was taken after heavy stresstesting on IntelBurnTest 1.5.1
Now, the idle temps are more or less the same (which is good), but also the load temps are all within 5C of each other.
I am not quite sure how Reltemp is reporting a minimum of 19C on one core though



2.75 is definitely an improvement over previous versions with my Extreme Sensors

Thanks
John