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Why I think RealTemp and CoreTemp report wrong VID for 45nm

post #1 of 5
Thread Starter 


My board also thinks 1.15v for normal CPU vcore, but during POST I see it displays the same CPUID as Core/RealTemp, without the "h" at the end as it's listed by Intel, only Everest seems to pick it up and its reporting a much lower VID. What do you guys think?
     
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post #2 of 5
Quote:
Originally Posted by GigaByte View Post
My board also thinks 1.15v for normal CPU vcore, but during POST I see it displays the same CPUID as Core/RealTemp, without the "h" at the end as it's listed by Intel, only Everest seems to pick it up and its reporting a much lower VID. What do you guys think?
I'm not familiar with everest, but core voltage in everest is probably not the same thing as VID... Your core voltage can be higher or lower(in some cases) than the VID. VID itself is dynamic in that it can change when power savings features are enabled. For example, an e8400 on auto will show a vid of 1.15(just an example) under load but when speedstep kicks in it lowers the multi to x6 and then the VID drops to say 1.00.

-EDIT-

I cite Intel C2D data sheet/VRD 11 guidlines in this thread ...

-EDIT- #2

This is interesting Giga, I'll look into this some more and post back here if I find anything.
Edited by MasterKromm - 6/14/08 at 2:35pm
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post #3 of 5
Thread Starter 
Speedstep and C1E are disabled, "core voltage" in Everest has always been VID and matched Core/RealTemp untill I went 45nm. Everest reports my current 1.296v vcore on the sensors page and theres no way it would even POST with 1.038v vcore at 3.8Ghz.
     
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post #4 of 5
I found this thread over at the lavalys Everest forums ->

Quote:
Originally Posted by Darkje
Hi Fiery,

I suspect the detection of VID on Intel E8x00 is broken in Everest.
It displays 1.05V for my E8400, as did older versions of coretemp. Latest version of coretemp and also realtemp display 1.1625 and in the coretemp revision history it also mentions fixed VID detection.

here is a picture showing realtemp, coretemp(0.99) and everest side by side:


and one of the older coretemp, before the fix:


I think everest should also show 1.1625? as does the fixed coretemp...

best regards, and hope you don't mind my whining about minor issues.

tnx Darkje
Quote:
Originally Posted by Darkje
oh I'd like to add that when I enable eist/c1e in bios the everest reported vid changes to 1.113V since the vid value is not supposed to change, and it does when eist/c1e is enabled I think it must be that everest is reading a wrong bit from the msr?

I don't know the specific msr, but it seems the reading includes a wrong bit that has to do with eist/c1e... maybe intel shifted or added a bit indicating vid on e8x00 opposed to e6x00?

best regards, Darkje
-Answer Below-

Quote:
Originally Posted by Fiery
EVEREST reads the right VID bits from the relevant MSR register. The problem was about how to translate raw VID register into Voltage value. We've fixed that, so please upgrade to the latest beta version of EVEREST Ultimate Edition available at:

http://www.lavalys.com/beta/everestultimat...qsd4mvyw8cn.zip

After upgrading to this new version, make sure to restart Windows to finalize the upgrade.

Let me know how it works.

Thanks,
Fiery
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post #5 of 5
Thread Starter 
Yea it matches now using the beta, thanks
     
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