Question New to me 10850k and MSI z490 Tomahawk overheating under stress test?

[Baumber]

I recently bought a used 10850k and a MSI z90 tomahawk motherboard for a 2nd gaming pc. At first, I built the pc using a bunch of older components I already had.

Noticed using a corsair h80iv2 aio, that the temps under prime95 small fft stress test easily hit 100c. Bought a thermalright peerless assassin 120 cooler and it had the same performance as the aio.

I chalked it up as having bad contact with the IHS and bought a Noctua NH-D15S and still have the same problem.

This cpu is not overclocked and I use thermalright TF8 or TF9 thermal paste for everything. And yes, the sticker is removed from the contact plate.

I don't see any noticeable damage to the IHS and the thermal paste appears to properly spread each time I install the cooler.

Any idea what the issue could be?

Thanks!

 

[logainofhades]

Those 10850k's were just very hot 10c/20t chips. You would need to do an undervolt to make any real improvement. I would worry more about temps during normal use, than a load you are never going to see otherwise.

 

[Baumber]

Those 10850k's were just very hot 10c/20t chips. You would need to do an undervolt to make any real improvement. I would worry more about temps during normal use, than a load you are never going to see otherwise.

Temps under normal use while gaming max out at 85c... Average around 75c.

 

[geofelt]

For gaming, you will not effectively use more than half the threads.
Your temps seem normal.
The danger is not so much heat which the chip itself will monitor but excessive voltage.

What is the make/model of your case?
What is the graphics card?
Is the case supplying enough fresh air to let the cooler do it's job?

 

[Baumber]

For gaming, you will not effectively use more than half the threads.
Your temps seem normal.
The danger is not so much heat which the chip itself will monitor but excessive voltage.

What is the make/model of your case?
What is the graphics card?
Is the case supplying enough fresh air to let the cooler do it's job?

It have an RTX 3070. The case is a Cougar MX330-X. I have 2 front and 1 rear noctua fans, with 2 cheapo fans on top.

I tried putting a fan on the side but it made very little difference for the cpu. When gaming, the gpu doesn't go above 70c and I can feel plenty of warm air coming out of the case.

 

[dev_cyberpunk]

Temps under normal use while gaming max out at 85c... Average around 75c.

That is normal.

 

[uWebb429]

Those 10850k's were just very hot 10c/20t chips.

All of the CPUs that were not quite good enough to be a 10900K were sold as 10850K CPUs. Intel added some voltage to ensure that they would run stable. That is the real reason why most of them run so hot when they are set to default voltage. You are correct that an undervolt can make a significant difference.

@Baumber
Reducing the VCore voltage to 1.190 V reduced my Cinebench R23 temperatures down to a peak of 66°C at a steady 4900 MHz. Default all core speed for the 10850K is 4800 MHz. It is slightly overclocked to bring it up to the same 4900 MHz all core speed that the 10900K runs at. Cooler is a 240mm Corsair AIO. A simple undervolt can drop full load temps by up to 20°C.

 

[Baumber]

All of the CPUs that were not quite good enough to be a 10900K were sold as 10850K CPUs. Intel added some voltage to ensure that they would run stable. That is the real reason why most of them run so hot when they are set to default voltage. You are correct that an undervolt can make a significant difference.

@Baumber
Reducing the VCore voltage to 1.190 V reduced my Cinebench R23 temperatures down to a peak of 66°C at a steady 4900 MHz. Default all core speed for the 10850K is 4800 MHz. It is slightly overclocked to bring it up to the same 4900 MHz all core speed that the 10900K runs at. Cooler is a 240mm Corsair AIO. A simple undervolt can drop full load temps by up to 20°C.

I'll have to give it a try. Haven't overclocked or messed with voltages since ivy bridge. Been using ryzen since they released the 2800x (now have a 5800x3d in my main PC) and thought I'd "treat myself" to a modernish Intel build.

Now that I think about it, when I first built my 10850k pc, I tried to push the clocks to 5.0ghz all core and no luck. Though, I barely even tried... Just gave up right away and went back to stock. Hopefully I didnt win the opposite of the chip lottery with this one.

 

[Baumber]

All of the CPUs that were not quite good enough to be a 10900K were sold as 10850K CPUs. Intel added some voltage to ensure that they would run stable. That is the real reason why most of them run so hot when they are set to default voltage. You are correct that an undervolt can make a significant difference.

@Baumber
Reducing the VCore voltage to 1.190 V reduced my Cinebench R23 temperatures down to a peak of 66°C at a steady 4900 MHz. Default all core speed for the 10850K is 4800 MHz. It is slightly overclocked to bring it up to the same 4900 MHz all core speed that the 10900K runs at. Cooler is a 240mm Corsair AIO. A simple undervolt can drop full load temps by up to 20°C.

This is the way! Just quickly dropped it to 1.2v and now its been running the small fft test for 20 minutes with a max temp of 93c.

7c doesn't seem like much, but in reality, it's much more because at stock, it could only last about 20 seconds before hitting 100c and throttling.

I'm going to keep messing with it to see how low I can reliably take the voltage at stock clocks. Maybe run a +1 like you did. We shall see.