[Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen...

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399

--- Comment #19 from SF <shitman71 at hotmail.com> ---
To me it is the complete opposite, my system runs too hot. Up to 70°C or higher
under full load.

Changing Voltages to lower values and power-settings to what i described
improved it to me, my system stays far longer running before crashing. With far
longer i mean it runs several hours under heavy load while with
default-settings it only runs less then a hour before crashing. We are using
different Mainboards which means they have different solutions delivering power
to the cpu but in general i did read this from several people having improved
their crashing-problems by changing power-settings.

You can try setting your ram manually to what is inside xmp but this didnt made
any difference and i tryed all kinds of settings, even custom.

All you can and need to do is changing the values tCL, tRCD, tRP, tRAS. These
are four, not five. Only setting these values will make a difference to my
experiences. Put command-rate to 2T, 1T is always causing crashes to me. 2T in
generals i known to be much more stable then 1T with minor performance-impacts.
(2-3%)

You might also check your ramvoltage, if you did forgot this. Increasing helps
for higher performance, decreasing gets you more stable.

Don't place more then 2 rams into your system, ensure they are seperated from
each other. This will increase stability and performance. Single-ranked ram is
also more stable to higher frequencys and has more performance then dual-ranked
but dual-ranked is more efficient at costs. Dual-rank will outperform
single-ranked ram if they are on equal frequencys.

https://www.amd.com/system/files/2017-06/am4-motherboard-memory-support-list-en.pdf

You can use higher rams at your own risk, i know some people did reach 3600Mhz
with my ram already. I can only achieve 3333Mhz.

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