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hrpuffnstuff
Adept III

Re: Ryzen 9 5950x running very hot 74C

@Kalistas 82

It doesn't matter whether its set to 5 or 30% as its all the same.  My room is 79°F so the CPU is 25-30°F over ambient and the tim still hasn't had time to set.

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Kalistas_82
Adept III

Re: Ryzen 9 5950x running very hot 74C

ofc it doesnt matter - unless we are talking of a different setting - changing the "lowest" allowed powerstate to anything above 5% in the powerplan wont change the boost behaviour in any way 

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hrpuffnstuff
Adept III

Re: Ryzen 9 5950x running very hot 74C

After disabling power boost in bios my temps fell down to the 105°F range idle and 140°F while gaming which is fine.  If I feel like I need all core boost I'll enable it in bios beforehand.

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Dynaverse
Journeyman III

Re: Ryzen 9 5950x running very hot 74C

For anyone running X570-E

Disable the cancer software to make 5950x cool again. Dropped from 70c idle in windows to 36c running 5950x Asus X570-E. I have PBO enabled, it's not that or any issues with bios. 

I'm using NZXT X63 2 fan one.

Also 3950x has an issue with Nvidia software, 2 cores max at 100%. So poke around. 

Here you go, cool 5950xHere you go, cool 5950x

Kill cancer software that comes with motherboard.Kill cancer software that comes with motherboard.

3D mark after full load, check green line.3D mark after full load, check green line.

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PWn3R
Journeyman III

Re: Ryzen 9 5950x running very hot 74C

I wanted to add some information here in regards to my experiences. I just converted from an Intel i9-7980xe that was delidded and overclocked to 5Ghz on 5cores and the other 13 were at 4.6Ghz. That CPU was drawing 780w from the wall for idle computer except running Cinebench. I was able to cool that and keep temps under 80 under full load with the liquid cooling system I have setup.

I have since re-worked that liquid cooling system to include an additional radiator, and a second pump to ensure that the flow rate is excellent (sitting at about 6L/m flow rate).

I am now seeing mid to high 60s, sometimes touching 70 while running Cinebench with my 5950x. I have the following configuration:

AMD 5950x with Corsair XC9 block

Asus Crosshair VIII Hero (non-wifi)

4x8GB G Skill 3800 CL 17 (2 kits of 2 sticks, 32GB total)

Nvidia RTx 3090 Founders Edition with Alphacool block

I have the 3090 in the loop as well. Here is the loop layout starting from the out on the CPU block:

CPU > Laing D5 > 480mm Swiftech Rad > 360mm THICK (double thickness) HW Labs Rad > GPU block > 560MM HW Labs Rad > EK Res/D5 Pump combo > CPU 

Now, you are probably asking why I'm posting this. I wanted to provide perspective to people about the heat concentration that these 5950x CPUs have. My AMD CPU after adding a second pump and a 560mm rad to this loop is still running at nearly 70c under load WITHOUT PBO. The package temperature reports as high as 83c at times. The (arguably) borderline insane voltages that they are using is responsible for part of this, as is the fact that the chiplets are essentially half the size of the same structures on Intel because 14nm vs 7nm. The ability to move the heat away from these chiplets efficiently is getting more and more difficult as manufacturing size decreases.

Increasing clockspeed increases heat generated, increasing voltage increases heat generated, and we are looking at tiny little chiplets, running very high voltages stock, and very high clockspeeds. If your CPU isn't thermal throttling, you don't have a problem, you just have the highest end AMD performance CPU available. As a brand agnostic performance chaser, I can say that both AMD and Intel have built some volcanoes over the years (Prescott Pentium 4 3.8Ghz machine melters anyone?). There are some people that have posted in this thread with legitimate problems and concerns, but I would say most things people are posting about are within what should be expected with this CPU. Just my .02

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ajlueke
Grandmaster

Re: Ryzen 9 5950x running very hot 74C

My 5950X hits 70C under load at 215W PPT, 140A TDC and 160A EDC.  It certainly does not hit that with PBO off.  I have a single D5 pump and a 45x420mm radiator and a 45x280mm in push pull.  So substantially less radiator area but apparently better performance.  What case are you using?

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PWn3R
Journeyman III

Re: Ryzen 9 5950x running very hot 74C

LDPC v8 with a customized top mount for the 560. The only ? I have is the Corsair high performance thermal paste I had to use. The plan was to use LM, but I had about one pinhead worth of LM left when I went to apply and ended up scooping the only kind of thermal paste they had at BestBuy.

Edit: Without the 560 in the loop, my loops water was going to +10 or +11c over ambient under gaming loads before equalizing. Now it's +3c.

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Draculea
Journeyman III

Re: Ryzen 9 5950x running very hot 74C

Hi everyone,

just entered the infamous club of 5950X users with abnormal high temperatures. I of course, have an Asus MB the B550-I Gaming Strix. Cooling is solid, custom watercooling.

But at least i come with something interesting.

Core preference:

Cores.png

 

 

 

 

 

 

 

 

 

We can see the preferred core is not even boosting the best.

But we can see something really eye opening next:

Temps.png

This is a core read when running Cinebench R23, where core 1 is doing most of the work, as it should, as it's boosting the best. When sometimes it switches to Core 6 than all hell breaks loose.

So it's either to do with the Windows scheduler or a poor BIOS implementation.

Anyone willing to validate my theory that actually only the second best core is causing the issue.

Regards

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trek
Elite

Re: Ryzen 9 5950x running very hot 74C

@Draculealooks correctly, Core 6 is the best core, you can see this information in parentheses, i.e. (1/1), this will be changed also if you set curve optimizer.

If you have unlocked PBO limits then temp will be high, however if you have quality custom water cooling (i.e. high pump flow) then 89.9C is awful.

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Gwillakers
Adept III

Re: Ryzen 9 5950x running very hot 74C

Guys,  I think I've found a better way

 

I've had a couple of high performance systems in the past.   A Xeon E5-2687W, and a Thread Ripper 1920X.   They both scored around 50 on a particular Benchmark.   (Which doesn't matter)

Straight out of the box my Ryzen 9 5950X on a Gigabyte B550I Aorus Pro AX scored 70 in the benchmark but ran 95C on a Noctua NH-U12A.   I tweaked the memory and other parameters, and got an increase to 75 in the benchmark but still 95C.

I was really concerned because even 2 threads of Prime95 would drive this up to 95C.   However,  strange,  I could load this up to 32 Threads of Prime95 and the temp did not budge, but it gobbled up the workload.  Canceling Prime95, my Heatsink dropped 20C degrees in 2-3 seconds.  So obviously good contact.

What I have determined is that AMD is perfectly fine letting you OC your Not Warranted CPU at 95C.   They have great control over the temperature by adjusting Multiplier(Frequencies), Core dispatch, Hyper Threading, and even voltage.  They make these adjustments 1000 times a second.  Faster than your Monitoring Software can report them to you. 

I was not happy with the temps so I turned Performance boost off, as well as Precision boost overdrive.  My Temps during the benchmarks and even a fully loaded Prime95 did not get much beyond 60C.    However my Benchmark dropped to 63.

But then I began to think that I was approaching this all wrong.  Instead of adjusting various parameters to keep up performance while maintaining a respectable temperature.   Why not just tell Ryzen to do it's best while staying at a temperature and Wattage that I want?

So I set Core Performance Boost back to Auto, and I set Precision Boost overdrive to advanced.  I set PBO Limits to Manual.  I kept TDC at 95A.  I kept EDC at 140A.  I lowered PPT from 140W to 120W.   Then I set Platform Throttle limit to Manual and typed in 77 for Platform Throttle limit.

I then ran the benchmark.   It got an 83, and it never went over 77C nor pulled more than 120W.

Long and the short of this is that the Processor is Great at Controlling it's environment, as it makes fine adjustments 1000 times a second.   Just let it know what you are comfortable with, Thermals, Current and Power and let it do its thing, and see if it doesn't surprise you.  It did me!