I checked the thermal paste and that was oke, it was spread all over.
I use the 5 dots apply methode and thats always good.
So i did it again and checked the temps.
Core 3 stays very hot, core 3 go’s to 90 dgr. while the rest stays arround 40 dgr.
I have the latest bios and chipset drivers.
I also never had this before.
That’s very odd, makes me wonder whether the IHS is warped or something.
I wonder if there are owners of the AMD 5800x3d CPU that also has high individual core temps.
With me it’s only core 3, the rest of the cores have normal temps.
Bench it, if it throttles RMA it … explain in detail
Where exactly do you see the temperature of each core? I definitely don’t see them in your pictures.
The system has several temperature sensors.
“Temperature3” is CPU total.
“Temperature1” is System1 (chipset)
“Temperature2” is System 2 (RAM)
etc
These are not the individual cores, otherwise 2 would be missing?!
Ah excellent! I didn’t see this! You rock man 
@michihimself is fully right, temperature 3 is not your core number 3! I didn’t realize, shame on me! 
Open Hardware Monitor is not maintained AFAIK, use another one like HWINFO64 or CPUID.
HWINFO64:
Your all right.
I am completely wrong.
I went from 6 core processor to a 8 core and had not seen the discrepancy. 
That’s what you get when you getting older. 
I use now HWINFO64 and that give me the right figures.
I still see that i better can undervolt a bit, because this thing is getting very hot.
-30 on all cores keeps him under 85 dgr.
But surely it’s a her like a ship or a car? no one calls them him … anyway 85°C sounds a safe temp to me but you should still check the spec sheet.
I had to re-apply for mine. After doing that, and with -30 CO I dropped 10-12 degrees peak and hover around 15K in C23 all day long.
Peak temps seen in a 10min run with a 360mm AIO is around 78-80c
Love this CPU.
I also did a stress test of a half hour with and whitout the use of PBO2 tuner.
I used AMD Ryzen master to monitor and CPUID CPU-Z for the stress test.
Whitout any under volting the max. core temp rising between 86 and 87 dgr.
With PBO2 tuner i injected -30 and did the same test again.
The max. core temp. stays under 80 dgr.
In both tests there is a bit of down throttling.
It looks like 80 dgr. is the point where the processor is starting to throttle down and losing some performance.
Do you have any source, where you’ve heard or read that?
That would almost be too good to be true, that’s why I’m curious.
Sure, AMD Ryzen 7 5800X3D gets caught speeding at Zen 4 clock rates on CPU-Z - NotebookCheck.net News
As I say, this is a rumour with a capital R. I’ve been searching for info from less obscure sources since I read it.
The thing is already super hot.
Most of the owners try to undervolt the processor to get him a bit cooler.
Overclocking looks to me that it only shorten it’s live span.
Not super hot at all. Running under water cooler here, it get to around 60-65 celsius playing MSFS
unless you are using a regular cooler and have a bad cooling inside the case.
Super hot is a 13900k running @ 5.8ghz
Yep, I have to say, highest I’ve seen is 75 and that was just Ryzen doing Ryzen things. I did double fan my cooler though, I’m not sure a single fan cooler would cut it unless your air flow is perfection.
This, my X3D is always running pretty cool, generally in the 40s-50s, sometime getting up into the 60s, but rarely any higher in sim.
I have a single fan cooler and it cools it just fine. I really don’t need 50C and I’m happy with 70-80C under full load. Granted though, my single fan is a noctua cooler with a giant heat sink
What model Noctua do you have?
I have the NH-U9S and tried to put a second fan on it, but that was mechanical not possible.
There is no room enough on the backside of my motherboard.
I now want to change this model with the Noctua NH-U12A, because this cooler has a high ranking in most of the cooler tests and it fits on my motherboard.
I don’t like water coolers, because of the noise they make on high loads.
Or grab the same as me, the “Gamestorm Assassin III”. pretty big, really efficient, and equal or better than Noctua ones depending tests. Price is also cheaper than Noctua.
Nice but much to big for me!
