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Radeon Vega FE - Trying to lower watt usage

(this topic may have been up before? please link me to it or specifik post)

My current settings for the Radeon Vega FE card is:

  • Fan:100
  • Core: 900
  • VDD 850
  • VDDC 750
  • MVDD 1250
  • MEM 750

Memory: Samsung HBM2 · 113-D0501100-109

amdmemtweak --CL 20 --RC 48 --RP 11 --WR 14 --CWL 8 --FAW 12 --RAS 20 --REF 24000 --RFC 300 --RTP 5 --RRDL 6 --RRDS 3 --WTRL 9 --WTRS 4 --RCDRD 12 --RCDWR 12

Hasing 38.28 MH on eth.

My problem, is if I toutch –RC and lower it to 42 or lower, the card crashes.
same with --RFC, if I go a bit below 300.

Apparently there is something I am missing, not understanding.
And I have been trying to figure this out, to no avail.

I need some help, I have followed guides etc.
Any or all guides I have been using, the result above is what I my self have tested every setting 1 by 1.
Until It showed the card only seems to crash on --RC <44 and --RFC <300.

(tldr; Card crashes no matter what, if setting RC below 44 and RFC below 300.)

Thanks.

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