Since building my first rig last June, i've always had this rock-stable settings for six of my Asus Dual OC 580s 8GB Samsung memory
-cclock 1260
-mclock 2050
-cvddc 925mV
-mvddc 925mV
This yields me a constant 29.1 to 29.3 across all cards (175 total) and pulls about 1175 up to 1200w. High, I know but they go for weeks until needing a restart.
Earlier this week, I played with them again to squeeze in few more Mh. These are my settings:
-cclock 1140
-mclock 2075
-cvddc 875
-mvddc 875
They average a total of 177.5 now and cards hashes from 29.5 up to 30.0. But the best thing is they now only pull 1035w dual-mining with DCR.
Wow thats excellent results for those cards. I've checked some forums and noone was able to get those numbers.
I've tried different tweaked BIOS (even from RX480) which gave same results but nothing was stable for more than few hrs.
With blockchain driver the only stable bios was original with 1750 straps and -cvddc 1000 (28MHz).
Which BIOS do you use?