With Anoraks bios you won't get far.
OK, so I modified the original BIOS using PBE v1.6.6 One Click Patching and my hash rate for the cards were around 740-748H/s. I then tried to clock the gpu memory using claymore 10.2 command line with the following settings:
-cclock 1200,0
-mclock 2150,0
Only doing the 1st gpu to see if it changes. But for some reason it appears that the clock settings were not being applied by claymore
==================== ROCm System Management Interface ====================
================================================================================
GPU DID Temp AvgPwr SCLK MCLK Fan Perf OverDrive ECC
1 67df 43.0c 83.153W 1265Mhz 2150Mhz 36.86% auto 0% N/A
0 67df 51.0c 160.87W 1425Mhz 2000Mhz 33.73% auto 0% N/A
================================================================================
==================== End of ROCm SMI Log ====================
Above you can see gpu0 with PBE BIOS mod and claymore not setting the overclock for some reason, GPU1 is on the Anorak.teck Bobeeb BIOS.
So what I ended up trying was modifying Bobeeb BIOS from anorak.tech and bumped up the memory clock to 2250, so now I neded up with this:
==================== ROCm System Management Interface ====================
================================================================================
GPU DID Temp AvgPwr SCLK MCLK Fan Perf OverDrive ECC
1 67df 52.0c 75.23W 1265Mhz 2250Mhz 40.0% auto 0% N/A
0 67df 60.0c 76.148W 1265Mhz 2250Mhz 40.0% auto 0% N/A
================================================================================
==================== End of ROCm SMI Log ====================
Both cards are now doing around 837-841 H/s for the last 12 hours, I've not seen any errors in the claymore logs.
I wonder, are the claymore core/gpu clock settings not applied to the card when the miner starts anymore? I'm running on the HiveOS mining platform, which appears to be a derivative of Ubuntu Linux.
These cards have Hynix memory in them, so, is this as good as it gets for the performance of these PowerColor Red Devil RX-580 Golden Sample 8GB cards?