Quote from: ingyenfrag on October 03, 2017, 10:04:20 PM

Quote from: astark052970 on October 03, 2017, 08:41:27 PM

Is anyone successfully running 3+ V56 for extended periods of time? Using the usual settings I was easily able to get around 1800 H/s running on 3x V56 for a couple days with no issues. Got the fourth board setup and although it worked well enough at first the rig crashed after about 14 hours. Have it running again now with slightly lower memory clocks. If that doesn't work I'll probably try messing around with HBCC amount. Anyone else having stability issues with many GPUs?

If you give me (PM) all of your configs I will try on my 6 card vega 56 rig.

Nothing special really basically the settings discussed in this and other threads. Core freq: -30%, Mem freq: 920mhz, Core/Mem voltage: Auto, Power level: -20%, Minimum fan speed: 2500rpm. HBCC on at 16080GB RAM. Blockchain driver. Running xmr-stak-amd with 8 threads (2/board) and gpu_threads_conf like this:
{ "index" : 0, "intensity" : 2016, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 0, "intensity" : 1600, "worksize" : 8, "affine_to_cpu" : false },

These settings on 3 boards was basically set it and forget it. With the fourth board it crashed after a few hours. Lowered mem freq down to 900 and it lasted longer but eventually crashed. My current theory is the new board just can't take the RAM overclock. Running at 890 now for about 8 hours. If it makes it through tomorrow hopefully I'll have my answer and it has nothing to do with 4 boards but rather the fourth board just can't overclock as far. These boards are great miners but definitely not as easy to work with as the 1070s.