Im getting about 96 khash/s out of my Gigabyte R9 270, looks pretty good if you ask me. ;P
Code:
cgminer.exe --scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388949883 -o http://cache.cryptoprojects.eu:8336/ -u Cachecoin address -p 1 -w 256 -I 19 -g 1 --thread-concurrency 21568 --gpu-fan 100 --gpu-engine 1150 --gpu-memclock 1500 --lookup-gap 2