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post #1 of 40 (permalink) Old 08-14-2019, 03:47 PM - Thread Starter
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Ryzen 3600 - High load temps

I’ve got a new Ryzen 3600 on a new Strix B450-F board. UEFI and Chipset Drivers are updated and current. The UEFI settings are untouched stock except for enabling the DOCP profile for 3200 RAM.

Running Prime95 (Small fft’s) with the stock Wraith cooler the 3600 temps immediately climb over 95C (and temp monitoring stops). Swapping a CM Hyper 212 cooler brings temps into the low 90’s; and an AIO cooler brings them into the upper 80’s. This seems extraordinarily high; and about 25 degrees higher than a Ryzen 1700X I have. All temps initially measured with HWInfo64 (Tctl/Tdie) and separately confirmed with Ryzen Master.

So, with both running Prime95 and with the same Hyper 212 cooler, I have:

65W TDP Ryzen 3600 temps in the low 90’s,

95W TDP Ryzen 1700X temps in the mid-60’s.

The Ryzen CPU with a 30W lower TDP is running about 25 degrees hotter.

This doesn’t seem right. Can anyone explain why this is? Is my 3600 bad?
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post #2 of 40 (permalink) Old 08-15-2019, 01:00 AM
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There is no such thing as bad cpu in terms of temperature.
Obviously the cooling is not good enough.

Did u try with the stock cooler of the 3600?

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post #3 of 40 (permalink) Old 08-15-2019, 01:07 AM
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what is your Vcore?

I just built a 3700X PC and the default Vcore was way higher than it should have been and caused me to overheat. I had to use offset to lower it. CPU is stable and much lower temp.

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post #4 of 40 (permalink) Old 08-15-2019, 01:26 AM
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None of the coolers you have tried are all that great thats why temps are so high
The Cooler Master Hyper 212 is ancient its design go back at least 10 years which means the stock AMD Ryzen cooler is a newer design

Unless the AIO you tested was a 240mm or bigger its not going to be all that much than the stock cooler or the 212

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post #5 of 40 (permalink) Old 08-15-2019, 04:15 AM
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Quote: Originally Posted by Mark_ View Post
I’ve got a new Ryzen 3600 on a new Strix B450-F board. UEFI and Chipset Drivers are updated and current. The UEFI settings are untouched stock except for enabling the DOCP profile for 3200 RAM.

Running Prime95 (Small fft’s) with the stock Wraith cooler the 3600 temps immediately climb over 95C (and temp monitoring stops). Swapping a CM Hyper 212 cooler brings temps into the low 90’s; and an AIO cooler brings them into the upper 80’s. This seems extraordinarily high; and about 25 degrees higher than a Ryzen 1700X I have. All temps initially measured with HWInfo64 (Tctl/Tdie) and separately confirmed with Ryzen Master.

So, with both running Prime95 and with the same Hyper 212 cooler, I have:

65W TDP Ryzen 3600 temps in the low 90’s,

95W TDP Ryzen 1700X temps in the mid-60’s.

The Ryzen CPU with a 30W lower TDP is running about 25 degrees hotter.

This doesn’t seem right. Can anyone explain why this is? Is my 3600 bad?
You're comparing rated TDP not actual power draw.

You'd need to compare the two under the same workloads whilst baring in mind that while there might be less power going to the 3600, that power is being fed to two less cores to begin with and those cores are smaller / higher density. The whole core complex are much smaller again giving less surface area to contact the IHS reducing it's ability to dissipate heat as effectively.

This will likely only get worse as nodes further reduce in size.

= Ryzen 7 3700X 4.3GHz @ 1.3v / Thermalright TS140 BW / Prime X470-Pro / 16GB Crucial BSLT 3733 MT/s cl16 / 1080Ti Amp Extreme 2GHz @ 0.987v / Aerocool Project7 P650 / Fractal Define XL =
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post #6 of 40 (permalink) Old 08-15-2019, 05:24 AM
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Quote: Originally Posted by upgraditus View Post
You're comparing rated TDP not actual power draw.

You'd need to compare the two under the same workloads whilst baring in mind that while there might be less power going to the 3600, that power is being fed to two less cores to begin with and those cores are smaller / higher density. The whole core complex are much smaller again giving less surface area to contact the IHS reducing it's ability to dissipate heat as effectively.

This will likely only get worse as nodes further reduce in size.
^this. Just wait till you get a better cooler. Got a Noctua U12S (Single fan) on my 3600 and my load temp (gaming and benching) never exceeds 65c. System is set to Optimized Default using Windows Power Plan - Balance with minimum processor state of 25%.

I applied two lines of MX-4 paste as shown.

BTW, why do you need to run Prime 95 when cpu at stock? Just use your most demanding task. If it is gaming, then game. Also, a version of Prime does not play well with Ryzen. Probably someone who knows will chime in.
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post #7 of 40 (permalink) Old 08-15-2019, 01:42 PM - Thread Starter
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Thanks to all of you for the quick responses, comments, and ideas. My feedback below:


Quote: Originally Posted by rastaviper View Post
Did u try with the stock cooler of the 3600?
Yes, that was the first thing I tried. The temps quickly ran over 95 and temp monitoring ceased functioning.
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post #8 of 40 (permalink) Old 08-15-2019, 01:49 PM - Thread Starter
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Quote: Originally Posted by UltraMega View Post
What is your Vcore?
CPU Vcore averaged 1.326v in a 10 min run of Prime95. Measured by HWInfo64 (SVI2 TFN).



Quote: Originally Posted by shilka View Post
Unless the AIO you tested was a 240mm or bigger its not going to be all that much than the stock cooler or the 212
The AIO used is the Corsair H80i v2; which is materially better than the Hyper 212.



Quote: Originally Posted by upgraditus View Post
You're comparing rated TDP not actual power draw.
True. The actual electrical power used by Prime95 was 63-65 watts for the 3600 and 110-111 watts for the 1700X. So the 3600 used ~45 watts less power but had temps ~25 Degrees C higher than the 1700X.



Quote: Originally Posted by rdr09 View Post
Also, a version of Prime does not play well with Ryzen. Probably someone who knows will chime in.
I had not heard of this before and will research this further. If anyone else has info on this please chime in.

Quote: Originally Posted by rdr09 View Post
BTW, why do you need to run Prime 95 when cpu at stock?
I run Prime95 on a new cpu to test if it is operating properly and determine what level of cooling is needed. Every i7, Xeon, or Ryzen cpu I’ve had in the past decade has been able to run Prime95 in the 60-70 degree range when using a Hyper 212 cooler and running stock (non-OC’d). So when the stock 3600 with a much lower power draw than anything I’ve ever owned generates heat much higher than I’ve ever seen I’ve got to question it.

The basic laws of physics call for a direct correlation between how much electrical power (watts) goes in and how much heat is generated. So, there must be something else going on here that I don’t understand. Perhaps the temps are being measured differently??? If anyone can help, please jump in.




Since my original post I’ve run a series of stress tests using Prime95 (Balanced mode for lower temps), RealBench, OCCT, and MemTest86; no faults or problems were noted other than the higher temps. Ultimately, my big questions are:

1. Is this a faulty cpu and should I exchange it for another 3600 with the retailer within the return window?

2. Is this a characteristic of the 3600? If so, should I replace it with another Ryzen (3600X, 3700X) that may not run so hot? Or just live with the high temps and enjoy the exceptional price-performance of the 3600?
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post #9 of 40 (permalink) Old 08-15-2019, 03:13 PM
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Quote: Originally Posted by Mark_ View Post
The AIO used is the Corsair H80i v2; which is materially better than the Hyper 212.
Its better yes but not by huge amounts and since its a single rad CLC cooler it has a tiny amount of surface area to cool with so thats why temps are so high
I am not trying to be rude or insult you so please dont misunderstand but the H80 is not a great cooler since its so small

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post #10 of 40 (permalink) Old 08-16-2019, 12:08 AM
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Quote: Originally Posted by Mark_ View Post
This seems extraordinarily high
Can you tell what your temps were running CBR20 mt?


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