my friend has a sapphire r9 290 in but its only getting 558kh
no errors, but isnt this card supposed to do 750-800kh??
here are the settings
using the newest multiminer
--scrypt -I 13 -g 2 -w 256 --thread-concurrency 8192 --auto-fan --auto-gpu --gpu-engine 1070 --gpu-memclock 1400
what is doing wrong? if i try to push the I to 14 i get 100% errors
help me obi wai, your my only hope
R9 290 uses 1 gpu thread, so: -g1 and --thread-concurrency 20481 (although this value will vary depending on how much RAM you system has), after you change both of these you should be able to increase -i and not see any hw errors.
After that, play around with your core clock and mem clock speeds.