I'm currently using a Vega 56 with 18.5.1 drivers on Win 10 x64 OS.
Within every 24-48 hours the miner (4.1c) crashes and also crashes Windows.
The card operates at a rather moderate OC: -gt 16 -cclock 1000 -mclock 950 -cvddc 900 -mvddc 800 -powlim -25.
Is there anything I can do to improve stability besides losing the OC?
Anyone else some experience with stabilizing 56s by any chance?
Lower the temperature: -tt 54
Really, you think/know that helps (coming from -tt 60)? Seems pretty low to me, but I'll give it a shot, thanks!
People usually overclock Vega64's memory from 945MHZ to 1100MHz which makes 16.4%
You have overclocked your Vega56's memory from 780MHz or 800MHz to 950MHz which makes 21.8% or 18.8%. It seems to me too much.
Maybe you should try -mclock 908 (for 780MHz base memory frequency) or -mclock 930 (for 800MHz base memory frequency).
On the previous page of the thread Soliqesh offered the following settings for Vega64:
Vega64 - Strix
OverdriveNtool
Core - P7 852/825mv
Memory - P3 1083/825mv
Check also here how people mine with Vegas. Maybe the lower memory frequencies (800 MHz) are for Vega56:
https://minermonitoring.com/benchmark?gpu=Radeon+RX+Vega&software=3874&algo=&type=