MSI 790FX-GD70 Temps, Everest, Speedfan, Etc.

nt650_999

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After 6 days of back and forth with careful question formulation, I have the following straight from MSI.  I thought it would be nice to have the facts as MSI sees them laid out here so that certain things that keep coming up need not be debated over and over again.  Many of these things have been said by someone in one post or another but not with the authority of MSI behind the conversation.  Some of these things have been contradicted in posts and we can now know for sure those contradictory statements are incorrect as far as MSI is concerned.

1) MSI calls the chipset the Northbridge, even though they admit the technicality that the thing we used to call a Northbridge is incorporated into the CPU architecture.

2) The 790FX/SB750 chipset is under the heatsink by the RAM slots, connected by a heat pipe to the MOSFET heat sink.

3) The chipset max operating temperature is 80C.

4) MSI will not talk about unsupported software like Speedfan and Everest.  However, if you prod them with pointy sticks, they will talk about supported software that ships with the motherboard.  AMD Overdrive TMPIN readings apply to the following devices:
      TMPIN1 = CPU die temp.
      TMPIN2 = Chipset temp.
      TMPIN3 = System/Motherboard temp.

The following are my own observations that are not directly from MSI:

1)  I have read reports that MSI has said that under 70C is a good idea for the chipset.

2) Everest's Northbridge temp runs 15C to 20C hotter than TMPIN2.  I have contacted Everest and expect they will correct this problem as they have for me in the past with other motherboards.  The AOD temp indicates that stock temp and most OC temps of the chipset will be fine in a well ventilated case without additional cooling, which was up for debate before the temp of the chipset was unequivocally reported.

3) Everest's CPU and core temp readings are the same as AMD OverDrive.

4) Speedfan's "Remote1" works in lockstep with Everest's "Northbridge" and that temp can be manipulated by a fan on the chipset heat sink - it is probably referencing the correct diode but interpreting the information wrong.

5) It's difficult to say what the other numbers in Speedfan mean, when related to the numbers that I can tell are accurate in Everest or that are provided by AOD.

6) Speedfan Speed03 is the CPU fan.

7) Everest GPU reading is the same as the temp report using nVidia software.
 

Fredrik

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That is great info.! What or who is the source on the first four? You know, we historians...
 

VidKo

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Nice topic nt650_999.

I can confirm your personal 2nd point (everest northbridge temp is higher than TMPIN2 in AMD OverDrive). It's 7 degrees difference on my board.
 

ex_forum_user_3

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I'm missing something here, what formulas does MSI use to give the good temp readings?

As without that information you still do not know how hot the stuff is inside.
 

nt650_999

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Bas said:
I'm missing something here, what formulas does MSI use to give the good temp readings?

As without that information you still do not know how hot the stuff is inside.
I don't think your argument makes any sense.

All of the products, AOD, Speedfan, Everest, etc. use a math conversion to get from whatever the diode signal is to whatever the temp is supposed to be.  Not all diodes send signals back in the same fashion, so there are different conversion methods.  That's why one of these diagnostic programs can report a correct temp for one product and the wrong temp for another: the temp diodes don't all function the same way across manufacturers and applications.  If a product uses the wrong math, you get a wrong temp reading.  If it use the right one, you get the right temp reading.  MSI need not say what the correct math conversion to say that the supported software uses correct formulas and therefore presents correct results.

Everest need not say how they get the right result (decompilation of supported software, empirical experimentation, knowledge of the diode types, or whatever) but my experience is their corrected numbers work properly.
 

mgburks

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Am I to be confident that the TMPIN3 = System/Motherboard temp in AOD? Because it is considerably lower in AOD than in other temperature detection software I have tried.

If this is so I have really nothing to worry about because that was the only temperature I couldn't get down to a reasonable level after a case cooling mod I performed. LOL

I think I now have a good temperature overhead to try to bump my CPU up a good bit, about 20C.
 

nt650_999

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My AOD TMPIN3 is the same as my Everest motherboard mobo temp.  Everest is version 5.30.2034 beta.  NB not right yet, but they're on it.

I don't know what other wares you are using, so I can't say anything for sure.  I don't typically look at the mobo reported temp.  MSI backs AOD and says it gives the correct temperature.  With the motherboard temp, what it tells you may or may not be valuable.  I would trust that AOD reports the true temp, MSI says their supported software is accurate, but you usually don't really know where the motherboard sensor is and whether the reported temp is an artifact of a strange air current.  If you know where the mobo diode is, please do let us know.
 

jrjr

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What is the difference between cpu die temp and core temp?

So from what I read above, we can disregard remote 1 in speedfan and the north bridge temp in everest. They read the same for me but are not accurate as I read this. Tmpin2 from amd overdrive is accurate and is what should be used to determine the temperature of the chipset (northbridge).... correct? It does make one a bit uneasy seeing the higher temps displayed and I would really like some closure on this to be comfortable that my chipset is not getting too hot.

Also, only my fan connectors 2 and 4 are able to be controlled by speedfan. I have verified that speeds 1 and 3 are not displayed nor controlled. They are powered and controlled by amd overdrive though.
 

nt650_999

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jrjr said:
What is the difference between cpu die temp and core temp?
One is a diode at the core, itself, the other is a diode on the overall chip.  There's some debate about which matters more.  If you aren't on an overclocking team with pooled resources or a sponsor, you shouldn't come near your CPU max temp with either.

jrjr said:
So from what I read above, we can disregard remote 1 in speedfan and the north bridge temp in everest. They read the same for me but are not accurate as I read this. Tmpin2 from amd overdrive is accurate and is what should be used to determine the temperature of the chipset (northbridge).... correct? It does make one a bit uneasy seeing the higher temps displayed and I would really like some closure on this to be comfortable that my chipset is not getting too hot.
I would ignore everything in speedfan.

MSI Assures me the AOD readings are correct and the Tmpin fields related to the objects I documented, above.

jrjr said:
Also, only my fan connectors 2 and 4 are able to be controlled by speedfan. I have verified that speeds 1 and 3 are not displayed nor controlled. They are powered and controlled by amd overdrive though.
That's interesting.  I use cased fans with switches on them and have never used speedfan to control anything but the CPU fan, so I had no realized that.
 

sendblink23

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I know I'm reviving an old thread... but since I just got this board "MSI 790FX-GD70 Rev 1.0" I want to ask... has Everest fixed the wrong NB readings? Or is AMD Overdrive the only software that reads the NB temps correctly?

This is a printscreen showing latest Everest & latest AMD Overdrive


sorry for reviving it... but its a real concern that I'm having.... since when I use the computer without Air Conditioner during the day, Everest reads the NB temp in the 70s.. looks kind of scary to me
 

nt650_999

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After having great experiences with Everest customer support for other boards in the past, they have given me the run around on this one and, ultimately, simply stopped responding.  There's a good chance that they have updated the product since I last checked, but I haven't bothered to update to see.
 
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