I confused with new n-factor value with R9 270 config.
I have alot of HW
I 16
w 256
tc 15232
core/mem 1075/1250
Even down I to 12 and speed 70khs
Please give a suggest to configure...

I have -I 11 -w 512 -g 2 --lookup-gap 2 --thread-concurrency 8192 --gpu-engine 1070 --gpu-memclock 1400