Real Temp - New temp program for Intel Core processors

[unclewebb]

If anyone wants to write an x64 driver for me that would be great.

Intel already showed the large deviation between Tj provided by DTS and Tcpu provided by the third sensor depending of die loading map (power map more precisely), there's no relation at all between them ! We can see Tcpu like a 'mean' temperature if we want, that's all.

You bring up a lot of good points.

The gradients that Intel shows in their diagrams is with a processor under load. All my testing was with 0% load so it's my belief that whatever gradient there is, is minimal and within the accuracy of the equipment being used.

With the core shrink of the new 45nm chips the gradient from core to core is getting smaller at full load because the on chip DTS sensors are getting closer and closer together.

The reason I use masking tape on the core is of course to reduce shine and to make the readings repeatable. With my computer unplugged and sitting over night I find that when I do an IR reading on the taped core, it is exactly equal to the ambient temperature. To me that says that temp readings through a piece of masking tape are legitimate.

I've had these same arguments with others and I realize I'm not likely to convince you. My question for you is how do you think Intel calibrates these chips on the assembly line. They have better testing equipment than I do but their methodology has to be quite similar. Get a reading from an IR thermometer and create a calibration curve to equalize measured core temp vs what the DTS is putting out.

Here's a good example of my E8400. I'm running Prime95 small FFTs, first on core0 with nothing on core1 and then I went into Task Manager and swapped it over to core1 with nothing on core0.

When the full load was on core0, it was averaging 47C while core0 heated up to 46C even though it wasn't doing anything. With the load swapped, both cores were now running pretty much the exact same temperature. The overall average difference is now less than 1C with 45nm.



I don't believe for one second that an IHS reading with both cores at idle is going to be 10C or even 5C away from what the actual core temperature is.

Do you plan to do new revisions & updates?

Certainly. Positive feedback is a great motivator.

[screwtech02]

Man, if it were written, there are a bunch of us who will test it!

[unclewebb]

Does CoreTemp work on x64? I believe he is using the CrystalCPUID driver in his program which I think comes in 32 and 64 bit versions.

[jaredpace]

Thanks for this awesome :f::u::c::k:ing program. Team Xtreme, :f::u::c::k: yeah!

UncleWebb i support your effort. I don't understand much of the tech, but i know that a working solution is desperately needed!

thanks for all your hard work

[HDCHOPPER]

thanks unclewebb for your efforts !!

[Ace-a-Rue]

Does CoreTemp work on x64? I believe he is using the CrystalCPUID driver in his program which I think comes in 32 and 64 bit versions.

it supposedly works if you disable driver signature enforcement...i haven't tried that as of yet.

[rge]

When the full load was on core0, it was averaging 47C while core0 heated up to 46C even though it wasn't doing anything. With the load swapped, both cores were now running pretty much the exact same temperature. The overall average difference is now less than 1C with 45nm.

That is interesting, especially how well they track. I was going to argue that maybe you were in the temp range where accuracy was less reliable, but instead I tried with linpack (finally a use for it) myself with rad fans off, got same results at higher temps, setting affinity to core 0, then core 1.

Regarding accuracy of IR, I wish 6 months ago, when i used my wifes accurate temp probe from work to double check IR through masking tape versus temp probe to cpu, wish I had taken a pic...would just flash that up each time as they were within ~1C at several different temps. Though, I used the probe thinking it was not going to be accurate.

You almost made a believer of me, using your useful program regardless, but would be nice to try it on a mobile cpu with known tjmax.

[Ace-a-Rue]

Does CoreTemp work on x64? I believe he is using the CrystalCPUID driver in his program which I think comes in 32 and 64 bit versions.

it supposedly works if you disable driver signature enforcement...i haven't tried that as of yet.

i disabled driver siganture enforcement for vista64...and vista64 still rejects the IA32bit inf file as not compatible.

[Ron 61]

Thanks for a great program. In addition to the request for minimize to tray option and a 1000 other request, could you make a start minimized option?

[xev]

when i try to locate the file, it says "specified location does not contain information about your hardware"
what can i do/

[unclewebb]

when i try to locate the file, it says "specified location does not contain information about your hardware"
what can i do/

You could go to the first post and follow the directions religiously.

rge: TjMax is documented to be 100C for the laptops but now I wonder if they suffer from the same inaccuracies as the desktop DTS sensors do at low idle temperatures. They most likely do.

[tet5uo]

Well, 2 out fo my 4 cores have bad sensors on them... one even tells me it's at 1c at this moment, lol...

Is it safe to assume that the 2 cores that are displaying normal temps are indicative of the temps on the 2 with dodgy sensors?

[FELIX]

If anyone wants to write an x64 driver for me that would be great.

...have you tried WinRing0 driver? it's work with XP/Vista 32 & 64,
and provide PCI, memory and MSR access.
Also it's a signed driver, and no need to use an installer for it. I know that SetFSB use this driver.
Personaly I made some test with it and C++-builder, run fine under 32bit, but not with 64 bits OS, probably cause I don't use Visual C++.
MemSet use TVicPort driver, but it don't provide MSR access.

[Stalk3r]

Strange, the temps for my E6400 are exactly the same as CoreTemp and HWMonitor:

http://stalker.planet.ee/idle.jpg
http://stalker.planet.ee/load.jpg

meaning they are all wrong or realtemp is reading Tjmax wrong as well or something else..??

[Supershanks]

Great project Unclewebb , many thanks

[LuckyNV]

Strange, the temps for my E6400 are exactly the same as CoreTemp and HWMonitor:

http://stalker.planet.ee/idle.jpg
http://stalker.planet.ee/load.jpg

meaning they are all wrong or realtemp is reading Tjmax wrong as well or something else..??

I have Everest, CoreTemp and RealTemp all read the same temp for my Q6600 B3

[deathman20]

Dang no Vista 64-bit

[Leeghoofd]

Can anyone host this file as I get constant 404 errors on the download link

thx

[burnstudios]

Yeah me to.. It just times out when I try to download it.

[boomstick68]

So the temps in RealTemp are the real deal? If so, I am pleased. 10c difference in CoreTemp and Everest. Thanks for a great program.

[Darth Vader]

Can anyone host this file

+1.

[burnstudios]

Ok got the file .. thanks to ThaWaxShop over at BPC.

Reading 38 and 37c folding SMP... Core temp reads 49 and 51c.
This is on a scythe infinity with 2 120 mm panaflos .. both surfaces lapped and ambient room temperature of 71 degrees Fahrenheit

Nice program! Thanks!

[CrazyNutz]

unklewebb:

I was wandering when someone would catch on to the Tjunction Max being
set too high... I believe you are right on the mark with choosing 95. I've read
all the data sheet's and I came to the conclusion that the Tjmax should be
somewhere between 92.4 - 97.4. I also read that "If the Thermal Monitor
is enabled" throttling will occur at or after Tcase Max (72.4c), and
PROCHOT# signal will be asserted, and at 20 - 25c over Tcase max (92.4 -97.4c)
the proc will go in to a halt state and signal the mobo (THERMTRIP# Signal) to
cut the vcore, this will happen "Regardless of whether or not Thermal Monitor
or Thermal Monitor 2 is enabled".

Thanks for the great work.
I'll be trying your real temps app.

[soundx98]

Man what a great way to start a Monday.
Awesome work!

Kudos to both yourself and Ix

[Darth Vader]

Please, anybody, host the "RealTemp.zip" somewhere else. That link does not work .