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hardcoregames_
Big Boss

Re: very unstable 3700x temperatures

ddmeltzer8 wrote:

in bios its stable.but why does it matter?

A lot of "tools" are not reading the DMI otr SM bus properly.

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ddmeltzer8
Adept I

Re: very unstable 3700x temperatures

they both show the same temps.

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ddmeltzer8
Adept I

Re: very unstable 3700x temperatures

and what does that mean?

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ddmeltzer8
Adept I

Re: very unstable 3700x temperatures

this is maybe the worst forum iv ever gotten "answers" from.lol!just a bunch of clowns who know little of what theyre saying.

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hardcoregames_
Big Boss

Re: very unstable 3700x temperatures

ddmeltzer8 wrote:

and what does that mean?

The BIOS in all of my machines shows the fan speeds and thermal sensors properly.

Some software poll the SM bus which needs a COM interface in windows

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Earnhardt
Paragon

Re: very unstable 3700x temperatures

Quote "this is maybe the worst forum iv ever gotten "answers" from.lol!just a bunch of clowns who know little of what theyre saying."

So everyone is giving you the same answer,but we are the "clowns" ?

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pokester
MVP

Re: very unstable 3700x temperatures

I run core temp all the time and see the temps fluctuate but I can see this behavior in any app that monitors temp per core and has been updated to be Zen2 compatible. A lot of traditional apps were not reporting temp right at all when Zen2 came out and really scared people. Most the top apps have however now been updated including core temp. I can see at idle per core it constantly changing temp from between 32 and about 46 at idle.  It will do the same thing under load. My 2xxx series processors did not do this. That doesn't make it abnormal, just how  Zen 2 works. AMD as well as all the top hardware sites have acknowledged many times over the fact that this architecture does not behave like any processors before them. For me I have seen no issue, stability or otherwise. 

Is is possible your situation is different is and is really best decided by you. If you think you have an issue, AMD will likely help you with an RMA. 

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pokester
MVP

Re: very unstable 3700x temperatures

Sorry I just saw your question. I didn't notice it over the past couple days but this thread has had several comments.

Ryzen Master always shows the temp as much more consistent and doesn't ever show the temperature spiking fluctuation. Most the 3rd party apps show per core temp fluctuations like core temp, hwinfo will jump around a lot from one second to the next. When Zen 2 first came out core temp was way off IMHO in reporting temp. Then AMD came out and said that 3rd party apps would need to be updated as the way Zen2 reports temp is very different than earlier architectures. I would imagine that with those changes that even with updated apps that are now supposedly Zen 2 compatible that it still may not be measuring, polling or averaging the temps even in the same way that AMD is in Ryzen Master. I don't put too much worry in these apps numbers beyond if I was to start seeing a change that was not normal for my system and then I would go to Ryzen Master and see what is really happening according to AMD's software.

The OP reported they were seeing this fluctuation in Afterburner. I see it in Core Temp and HWINFO myself, but don't see it as abnormal as temps are always way under thermal limits.

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pokester
MVP

Re: very unstable 3700x temperatures

These are taken seconds apart from each other.

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pokester
MVP

Re: very unstable 3700x temperatures

These threads have a lot of good explanation within them of this normal Ryzen 3xxx behavior and why.

Ryzen 3600 idle temperature fluctuation? | TechPowerUp Forums 

https://www.reddit.com/r/Amd/comments/d54ztx/temp_fluctuations_3700x/ 

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