Hi! Could you give me an example of tuning AMD 570 for Turtle coin? More specifically, which is the most power efficient core clock/voltage? I've read the documentation and it said for the core 1050 mhz, but how low can the voltage go - 800V or even less? Currently I am 1150/850 but the power consumption is 20% more than CN-r.
Chukwa and CN/r are completely different algos, there's just no point expecting a power consumption X because CN/r draws Y.
For your question, you just have to test your way to a stable setup, impossible to say where your 570 will croak
. If you have a power target you don't want to exceed you'll have to clock down the mem clk to throttle the algo, otherwise just continue to dial down the core clk and voltage and see where you end up.
I know this. It takes much time to determine for each card whether the voltage/frequence settings will cause troubles. For example, after 2 months of running one of my 13 card rig with settings for XMR, one of my cards (actually the only 560 card) started to have issues. Even after cold restart the card becomes dead quickly. Since the memory settings for this particular card I left by default, I came to the easy conclusion that the 1150/850 setting for the core is too much. So I reduced the clock to 1050 and the card seemed to like it. So far
24 48 hours without errors. My point is that it will take months to determine whether a setting 1050/800 or 1050/750 etc. could be achieved for each 570 and 580 card. I just need a confirmation from someone that 800 or less mV is achievable for chukwa, and thus it is worthy to take the time and adjust each card. I guess I can get 100-200W less power consumption for a rig, if this is the case. Someone wrote here that he managed to get equal power consumption for chukwa and cn-r without sacrificing the hash rate, so my guess is he managed to stabilize his cards with less than 850 mV on the core.