Having very high reject rates with new rig running 2x r9 290 tri-x runni sgminer and 13.11 beta drivers. Bat file as follows
sgminer -o stratum+tcp://middlecoin.com:3333 -xxxx-p x -I 23 -w 256 --thread-concurrency 32765 --gpu-engine 1020 --gpu-memclock 1500 --gpu-fan 85 --temp-target 88 --temp-overheat 92 --temp-cutoff 98 --gpu-powertune 20
Can't get these cards running with cgminer at all.
Any suggestions?
"-I" is too high. Start with 18/19/20. Check the hahsrate/rejects/WU and settle for the best values (depends also on what server you're hashing).
GPU and memclock might be too high as well. safer settings are 947/1250 or 975/1350 or 987/1425. Let it run a while (day or two), see if anything goes sick/dead/off. Have a good PSU?