TjMax for all

[rge]

IR will read shiny surfaces artificially low because of reflectivity. Also you are measuring the heatsink which is lower temp than tcase which is lower temp than tjunction.

If you put a piece of masking tape over the heatsink where aiming you can get accurate temp of heatsink...but on load there will be big gap.

But if you want to measure tcase, remove heatsink, undervolt and underclock (so does not overheat prior to reading), put thin piece masking tape on cpu (otherwise you will get artificially low temps) and put IR gun on top of cpu. That way you can calibrate your cpu temp to actual tcase temp if you desire (speedfan will give you cpu temp) and calibrate core (tjunction) temp ~5C higher than that.

To check accuracy of your sensors with IR:
In attached pic with tjmax of 95, tcase (IR) gives same temp as tjunction (software). Though we now know ~5C gradient exists at idle with no heatsink, underclocked state of measurement. So with correct tjmax 100, tcase would read 72 when tjunction read 77.
(reference articles for gradients are in realtemp thread)

[The Coolest]

Got an email from Benson, there was an error in the original presentation.
Official release will be made in a few days.
Here is the correct information:

65nm Desktop Dual-Core Processors Stepping: B2 G0

• Intel® Core™2 Duo processor E6000/E4000 series 80 90 °C

• Intel® Core™2 Extreme processor X6800 80 90 °C



65 nm Desktop Quad-Core Processors

• Intel® Core™2 Quad processor Q6000 series 90 90 °C

• Intel® Core™2 Extreme processor QX6000 series 90 90 °C

• Intel® Core™2 Extreme processor QX68XX 80 80 °C

He's still confirming information about the server parts.

I'm still not quite sure about the 80C for the QX68xx parts, but these values look better than the original ones anyway.

[Flinch]

Great info, any word on the 9 series?

Thanks

[kadozer]

So does that mean Real Temp is more reliable than CoreTemp? I have Q6600 and 90C seems kinda low but I trust it more around there.

[T_Flight]

i7 965 Extreme? Would really love to know that.

For the Extreme's they should have Green Range, Yellow Caution Range, and Red St00pId range. hehe

[G.Foyle]

What about 45nm CPUs?

[LuckyNV]

What about 45nm CPUs?

I thought 100C was officially confirmed for 45nm

[rge]

45nm cpus were not the issue and should be same, it was the 65nm tjmaxes which made no sense as they suggested core temps 15C below IHS temps. These are a little better for 65nm....but it still does not explain 95C IHS temp on a E6850 GO at DTS=0 with tjmax 90C. And Q6600 B3 stepping measuring 85C IHS at DTS=0 with a tcase max of 62C versus Q6600 G0 measured 95C IHS at DTS=0 with tcase max of 71C, so no way am I buying they have the same tjmax. Though the Q6600 B3 90C tjmax makes sense based on E8400's tjmax of 100 and measuring at DTS=0 95C IHS temp and 97-98C top of die temp when drilled though IHS (both cases suggest a 5C higher core temp than IHS at idle, low volts, which is plausible, heat cant go from IHS to core as would be suggested by some of the other still too low 65nm tjmaxes).

If those are correct tjmaxes for 65nm, then unlike 45nm, many still have 5-10C absolute temps higher than tjmax from DTS sensors being "individually calibrated to avoid throttling below tcasemax". But the inconsistencies still seem fishy.

[DragoonXX]

yeah... 90 on a G0 Q6600 sounds low...that would mean my TRUE is cooling it to ambient air, or actually slightly below, as opposed to about 9 degrees above ambient case temp

[hecktic]

I hope CPUz, CoreTemp, etc. will all update their programs with this information because it can really and I mean really help the overclocking community

[SNiiPE_DoGG]

hmmmmm, I think that 90 may be wrong, my brother just changed his realtemp to 90C and it said his q6600 was idling at only 17C, it is at stock and under water at the moment but that is well below ambient.

[MomijiTMO]

Mine would also be under ambient . . . .. LOLOLOLOL.

I wonder what it really is? In any case, I think I'll be treating it as 95 for now.

[DragoonXX]

TJmax of 90 gives me core temps of 27-30 on a true, with a case temp of approx 32 degrees at the bottom of the case *temp guesstimated with a kama meter temp probe, waiting on my IR sensor for a slightly more accurate reading*

[HuffPCair]

Yeah my readings are in the low and mid 20sC idle and I am clocked to 3.6GHz on my Q6600. If that is true then SWEEEEEEEEEEETTTTTTTTTTT, but I doubt it is. Seems a bit to low.

[MomijiTMO]

Well this got me thinking. Aren't temp sensors designed to accurately measure load temps? For example my idle temps fluctuate like mad whereas my load temps don't move around. Sooooo could this also be a lack of precision of the temp sensor? Oh well.

[WhiteFireDragon]

65nm Desktop Dual-Core Processors Stepping: B2 G0

• Intel® Core™2 Duo processor E6000/E4000 series 80 90 °C

• Intel® Core™2 Extreme processor X6800 80 90 °C

what does the "80 90 °C mean"? one core is 80C and the other 90C? and also, the stepping says B2 and G0. i thought these were for the q6600? i have an e4300 with 2 L2 stepping, so this tjmax does not apply?

[Utnorris]

So is 95c accurate for 45nm quads?

[randomizer]

what does the "80 90 °C mean"? one core is 80C and the other 90C? and also, the stepping says B2 and G0. i thought these were for the q6600? i have an e4300 with 2 L2 stepping, so this tjmax does not apply?

80C for B2, 90C for G0. I assume that the B2 Tj Max is actually the L2 Tj Max for the E4x00, they just didn't bother to label it properly. According to the slides there's also a B2 Q6600 but there isn't really. You need to just make some assumptions with the steppings.

[Simps]

G0 and B3 65nm quads with the same TJMAX of 90C?
That is wrong for sure.

2 years passed now, and noone can know for sure the real temps of their 65nm quads. Nice.

[SNiiPE_DoGG]

So is 95c accurate for 45nm quads?

100c is the temp officially for 45nm quad, 95 is the correct for 65nm quads (despite what was posted earlier in the thread)

[Jor3lBR]

Intel doesn't support OC anyway, you can't RMA once you've overclocked....

Don't get this they don't support OC and the first people that get's their CPU's [ES] don't buy a peace of hardware for more then a decade aka hard core benchers.

[SoulsCollective]

I'm not sure about 100 for 45nms. If this is accurate (and presuming my temp sensors are ok), my Q9450 under an EK-Supreme and on an MCR320 is hovering at 60idle, and about 80 load. Feeling the back of the board during operation and around the base of the waterblock, there's no way those temps are correct.

[SNiiPE_DoGG]

I'm not sure about 100 for 45nms. If this is accurate (and presuming my temp sensors are ok), my Q9450 under an EK-Supreme and on an MCR320 is hovering at 60idle, and about 80 load. Feeling the back of the board during operation and around the base of the waterblock, there's no way those temps are correct.

[yoda] to hasty you are, a q9450 you have mhhhhm, broken DTS it has[/yoda]

[randomizer]

I'm not sure about 100 for 45nms. If this is accurate (and presuming my temp sensors are ok), my Q9450 under an EK-Supreme and on an MCR320 is hovering at 60idle, and about 80 load. Feeling the back of the board during operation and around the base of the waterblock, there's no way those temps are correct.

You probably have craptacular sensors then.

Run the new sensor test in RealTemp and see if your sensors are sticking at ~60C (~40 delta to Tj Max). http://www.xtremesystems.org/forums/...postcount=2502
It does seem to be quite a high temp to be sticking at though.

[MomijiTMO]

So what is the TjMax for the Q6600? I'm going with 95 until someone confirms Intel's news of 90.