I have 6xMSI ITX AERO 6gb (samsung)
eth
 ~23-24mh +0 CORE, +800 MEMORY temperature ~ 65°-70°  works stable
 zec
~280-310sol +150 CORE, +200 MEMORY temperature ~ 70°- 72° after 3-4 hours - drivers crashing. I trying without OC - drivers still crashed 
I think i do something wrong