Any x13 miner for ASUS R9 280x command line

[miner555]

i see on betarigs  4x2400= 9600

but i have 4x2000=8000   where is worng


my command

-I 19 -g 2 --gpu-memclock 1500 --gpu-engine 1090 --gpu-fan 70 --gpu-powertune 20 --thread-concurrency 8192 --lookup-gap 2

[ekoice]

i see on betarigs  4x2400= 9600

but i have 4x2000=8000   where is worng


my command

-I 19 -g 2 --gpu-memclock 1500 --gpu-engine 1090 --gpu-fan 70 --gpu-powertune 20 --thread-concurrency 8192 --lookup-gap 2

https://bitcointalk.org/index.php?topic=623409.0