I tried with this settings also but it seems as one board always gives up... it idles around and sometime two other boards are following.
one seems to be running without problems.
the first one that defaults is running at 59°C @ 400 mh/s per chip, the other ones are around 55/56 °C.
Overclocked to more than 400 mh/s they go up beyond 60 °C before they idle.
I have this:
--queue 4 --avalon-options 115200:16:10:d:400 --bitburner-voltage 1250 --avalon-temp 50 --avalon-cutoff 65 --avalon-fan 100
I explicitly set the cut-off temp to 65. The default is 60, so that's probably why your boards are idling.
BenTuras, thank you. You made my day!
I thought my cgminer (3.3.x included in minepeon, latest version) is the problem, because I doesn't support overvolting above 1310mv, but the main limit in reaching more than 400 mh/s was the temp limit. They are running at about 425 mh/s now at 62°C with the foloowing settings:
"bitburner-voltage": "1300",
"avalon-cutoff": "68",
"avalon-temp": "30",
"avalon-fan": "100",
Interesting!
Mine now run welll at 55 and 57 degrees at a stellar 450mh/s. One of the boards is throwing HW errors at me like crazy, but it is still at around 8.2gh/s while the other knocks out around 9gh/s. Awesome.