Question Ryzen 7 1800x only reaches 69C under full load. Doesn't reach its full potential/performance

SlimE_1

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Feb 14, 2017
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My ryzen 7 1800x doesn't get its full potential under full load. Yesterday I have let my cpu render a picture with 1-16 threads and my professor, my colleagues and me saw that these results weren't the usual and that there must be something wrong with my cpu. A friend of mine took my exact code for the picture which we render in java and he got a different, expected result on his 1-12 threads (pictures in attached files).

My result: Y-Axis = the time it needed to render the picture in minutes, X-Axis = the number of threads used

https://cdn.discordapp.com/attachments/639096874040819722/656922118134693945/a09-results.png

My mate's result: Expected outcome, he has a ryzen 5 2600 with 6 cores and 12 threads, he used my exact same code and got the expected result

https://cdn.discordapp.com/attachments/639096874040819722/656597334263595041/a09-results-test.jpeg

As you can see, the picture renders a lot faster when you compare 1 thread and 2 threads but it gets slower when I use 4-5 threads which makes no sense. 16 Threads is almost the same outcome as 2 threads which makes absolutely no sense.

My mate however got the expected result, where the times are shorter, the more threads are being used.

I benchmarked my cpu in cinebench r20. There will be pictures in the attached files of me showing the core temperatures, clock speeds and the cinebench result. It only reaches 69C on every core on 100% load which shouldn't be the case. It should reach at least 85C (I assume) and there must be something wrong.

https://cdn.discordapp.com/attachments/639096874040819722/656921967429156899/cinebenchr20.png

https://cdn.discordapp.com/attachments/639096874040819722/656921998265417729/cinebenchr20-2.png

Thanks for every help I can get.
 

DMAN999

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Please your full specifications (Exact make and model of Motherboard, CPU Cooler, PSU, etc. etc.) ?

Do you have the AMD chipset drivers for your chipset installed ?

What Power Plan are you using and what are the Maximium and Minimum Processor states set at ?

Also I'd suggest is that you use HWInfo or Ryzen Master (which seem to be the most accurate so far) to monitor your CPU and see if they show the same info as Core Temp does.
 
Last edited:
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SlimE_1

Commendable
Feb 14, 2017
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Please your full specifications (Exact make and model of Motherboard, CPU Cooler, PSU, etc. etc.) ?

Do you have the AMD chipset drivers for your chipset installed ?

What Power Plan are you using and what are the Maximium and Minimum Processor states set at ?

Also I'd suggest is that you use HWInfo or Ryzen Master (which sem to be the most accurate so far) to monitor your CPU and see if they show the same info as Core Temp does.
Motherboard: Asus asus rog strix x370-f gaming
PSU: Be quiet 600w gold
Cooler: noctua
gpu: msi rx 480

Don't know

Don't know

Ok
 

SlimE_1

Commendable
Feb 14, 2017
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Your cinebench score looks pretty much as it should. Don't know what's going on with your first graphs though.

I'd update to the latest version of Win10 and make sure you have the latest AMD chipset drivers.
I updated the chipset driver and did anothe benchmark with these results:
View: https://imgur.com/a/WhFEMRh


View: https://imgur.com/a/tlLcPJD


3507 Points now, a bit worse than before but idk. Only reaches 70C
 

SlimE_1

Commendable
Feb 14, 2017
65
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Please your full specifications (Exact make and model of Motherboard, CPU Cooler, PSU, etc. etc.) ?

Do you have the AMD chipset drivers for your chipset installed ?

What Power Plan are you using and what are the Maximium and Minimum Processor states set at ?

Also I'd suggest is that you use HWInfo or Ryzen Master (which seem to be the most accurate so far) to monitor your CPU and see if they show the same info as Core Temp does.
I updated the chipset driver and did anothe benchmark with these results:
View: https://imgur.com/a/WhFEMRh


View: https://imgur.com/a/tlLcPJD


3507 Points now, a bit worse than before but idk. Only reaches 70C
 

SlimE_1

Commendable
Feb 14, 2017
65
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What application were you using for the image render you first mentioned? Because so far that is the only thing that doesn't seem to be performing as expected.
Java, but it can't be the program because we all use java and everyone gets the correct result except for me. But isn't the temperature wrong as well? only 70C under load is really low
 

SlimE_1

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Feb 14, 2017
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Refresh, it will load now.

PS
The Best BIOS Version for your CPU for that MB is Version 4207 (with AGESA 1.0.0.6) But if you updated to the newest one you probably won't be able to downgrade back to that older version.
so, should I change the setting from 90% to 20% on the minimum thing? And how do I set the ryzen processor to active like yours?
 

TJ Hooker

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Ambassador
Java, but it can't be the program because we all use java and everyone gets the correct result except for me. But isn't the temperature wrong as well? only 70C under load is really low
You have a premium noctua cooler, 70C seems plausible to me. Your cinebench performance is more or less as expected, so what does it matter that your CPU is running cooler than expected? Seems an odd thing to complain about.

Edit:
"Overall stress/load temperatures are very nice with temps at the ~70 C marker peaks (with a simple heat-pipe based Noctua U12S SE AM4 cooler). "
https://www.guru3d.com/articles_pages/amd_ryzen_7_1800x_processor_review,7.html
 
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SlimE_1

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DMAN999

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Setting it to from 5% to 20% lets your CPU downclock when idle and only boost up when needed.
I have set mine at 5% and 10% as well but I personally didn't notice any difference than when it is set to 20%.
 

SlimE_1

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Setting it to from 5% to 20% lets your CPU downclock when idle and only boost up when needed.
I have set mine at 5% and 10% as well but I personally didn't notice any difference than when it is set to 20%.
I changed all that stuff and I still get the same results. The picture renders slower when using 4-5 threads than 2 or 3 threads
 

DMAN999

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I changed all that stuff and I still get the same results. The picture renders slower when using 4-5 threads than 2 or 3 threads
Look at Settings … System ... About and make sure your version of Windows 10 is updated to version 1903 OS Build 18362.535 to be sure the AMD Ryzen Balanced Power Plan and Windows Scheduler work together properly with your Ryzen CPU.

If it isn't, update Win 10 then run that test again.
 
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SlimE_1

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