Sapphire Nitro + Vega 56 question

vsimovic · February 22, 2021, 4:59am

Hi

so, I cant strap my Sapphire Nitro+ Vega 56 with anything. I use it alongside my other Vegas that take my straps happily but this one doesnt accept anything. When I try some of my straps, its wattage drops and TRM just restarts.
I’m looking if anyone had any luck with theirs? What bios are you using? what straps?

oni · February 24, 2021, 4:38pm

how are you applying your straps? in console?
i assume you know that you have to change the gpu number in the amdmemtweak line

vsimovic · February 24, 2021, 4:47pm

yes of course thats not the problem

ss-silver · March 8, 2021, 10:59pm

Hey I have not worked with the sapphire but was able to get a MSI with Hynix memory a little over 50MH, using this strap:

amdmemtweak --i 0 --cl 18 --ras 23 --rcdrd 14 --rcdwr 11 --rc 34 --rp 13 --rrds 3 --rrdl 4 --rtp 6 --faw 12 --cwl 7 --wtrs 4 --wtrl 4 --wr 11 --rfc 164 --REF 17000

You may want to start with the rcdrd at like 20 and slowly try lowering that numbers to see how much it can handle.
The “Vega 56 Hynix” section of the below guide worked great for me

github.com

minershive/hiveos-linux/blob/master/hive/miners/teamredminer/0.6.1/ETHASH_GENERAL_TUNING.txt

TeamRedMiner Ethash Tuning Guide
================================

Summary
-------
- Do not trust the displayed hashrates of other closed source
  miners. We will release a separate report on this topic and tools
  for everyone to verify our claims shortly. For the time being, run
  longer tests, observe your accepted poolside hashrate and draw your
  own conclusions.
  
- Polaris cards are only briefly covered by this guide, plenty of
  guides available already.

- For Vega performance, you must establish modded mem timings using
  the AMD mem tweak tool yourself, or use a mining OS that does it for
  you. TeamRedMiner does not modify timings automatically.

- Vega 56 Hynix can do > 50 MH/s which is a significant boost vs other
  miners.

This file has been truncated. show original

Smining570 · May 17, 2021, 9:24am

I have nitro+ only as samsung vers. but here´s another sapphire with hynix mem.

Straps
amdmemtweak --CL 20 --RC 37 --RP 11 --WR 14 --CWL 8 --FAW 12 --RAS 20 --REF 65535 --RFC 248 --RTP 5 --RRDL 6 --RRDS 3 --WTRL 9 --WTRS 4 --RCDRD 12 --RCDWR 12

system · July 8, 2022, 12:25am

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