So I wanted to share my setup for those having issues with these cards. It took me a while to get the settings right as to where I was getting no invalid shares. I stumbled on this guide originally which helped but the settings did not work for me. My rig wouldn’t even power on and then when it did, I kept getting invalid shares, but slight adjustments in the overclock settings and straps solved the issue. I didn’t want to mod the bios on my 64s to 56 settings either. Here are the settings that worked for me…
Straps: amdmemtweak --CL 18 --RAS 22 --RCDRD 23 --RCDWR 12 --RC 36 --RP 13 --RRDS 3 --RRDL 4 --RTP 6 --FAW 12 --CWL 7 --WTRS 4 --WTRL 9 --WR 13 --REF 65000 --RFC 249
Seems like the RCDRD setting was the issue with the original guide for me. Once I increased that, it booted up normally. I’m probably missing out on 1 or 2 MH. I had them close to 54 MH at one point but I kept getting invalid shares. It’s now stable and I’m happy with the power consumption to performance ratio.
If this helped and you want to buy me a beer: