so I have received my sierra but at least once or twice a day it zombies and doesn't kick back in until I restart cgminer does anyone know why this happens?
Are you overclocking it (too much)?
clock 590, current hashrate of 1.22TH/s, temp 77'c 0.79v
Well if it's dropping out then it's unstable and you're obliged to try it at a lower clock speed.
if i remove --hfa-hash-clock 590 will it clock at its normal clock rate (550) only reason why i over clocked it is cause it barely passes 1TH/s without overclocking