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Profile rebirther
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Message 8473 - Posted: 24 Nov 2022, 10:31:58 UTC

There will be a downtime tomorrow for some updates and an undervolting test.
The PBO limit is too high and must be changed in BIOS. The CPU is reaching 95°C easily under heavy load which is not good.

Iam expecting 1h for stresstest. The server will not be available at this time.

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Message 8474 - Posted: 24 Nov 2022, 17:21:31 UTC - in response to Message 8473.

If your CPU and MB support it, then enable ECO Mode to reduce power/heat. You'll most likely get a boost in performance since it won't be thermal throttling anymore either.

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Message 8475 - Posted: 24 Nov 2022, 17:48:59 UTC - in response to Message 8474.
Last modified: 24 Nov 2022, 18:17:21 UTC

If your CPU and MB support it, then enable ECO Mode to reduce power/heat. You'll most likely get a boost in performance since it won't be thermal throttling anymore either.


PBO2 is the important thing, the server is running on Ryzen 3950X. PBO has 1.4xV max limit which is too high. I dont like these standard settings.

Settings to test:

- PBO: On, ECO-Mode 95W
- PBO2: PPT Limit: 120W
- vCore Offset -0.100V

For better performance and less Watt / heat

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Message 8476 - Posted: 26 Nov 2022, 4:15:32 UTC
Last modified: 26 Nov 2022, 4:23:29 UTC

The tests had some crashes and broke the hole OS, I have reinstalled nearly all things but still need time to install the rest. This will give us more downtimes if something must be installed like drivers.

For now after 13h Iam dead ... all for nothing with extra work, no settings in BIOS and the latest for these changes, what a mess.

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Message 8478 - Posted: 26 Nov 2022, 16:53:35 UTC

I have 2 rigs 3900x
Both were running at 3500@1,0V (little lower were stable as well) full stable on all torture tests with Prime95 and BOINC and power consumption was very little so even Fera5 cooler were keeping it under 65deg
Try to set constant freq and voltage.

Technik007[CZ]
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Message 8492 - Posted: 2 Dec 2022, 23:28:03 UTC

I had 3950x and with air cooling temperatures were high as-well.
Easiest thing is to limit max temperature i thing or simply let it run in ECO mode where max consumption is limited to 87W.
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Message 8493 - Posted: 3 Dec 2022, 2:01:47 UTC - in response to Message 8492.

I had 3950x and with air cooling temperatures were high as-well.
Easiest thing is to limit max temperature i thing or simply let it run in ECO mode where max consumption is limited to 87W.


First post EVER WOO HOO!!!
Don't stop now though!!!

bluestang
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Message 8495 - Posted: 3 Dec 2022, 4:15:12 UTC

@rebirther What CPU cooler and TIM are you using on that 3950X ?

Profile rebirther
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Message 8496 - Posted: 3 Dec 2022, 6:23:24 UTC - in response to Message 8495.

@rebirther What CPU cooler and TIM are you using on that 3950X ?


Noctua NH-U14S and what is TIM?

KEP
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Message 8497 - Posted: 3 Dec 2022, 11:31:40 UTC - in response to Message 8496.

according to: http://acronymsandslang.com/meaning-of/technology-IT/TIM.html

Bluestang most likely refers to: Thermal Interface Material (I think what we call thermal paste or products similar to thermal paste)

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Message 8498 - Posted: 3 Dec 2022, 11:55:07 UTC - in response to Message 8497.

according to: http://acronymsandslang.com/meaning-of/technology-IT/TIM.html

Bluestang most likely refers to: Thermal Interface Material (I think what we call thermal paste or products similar to thermal paste)


If it is the Thermal paste then the standard from Noctua package.


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