I'm mining at 30Khs on my AMD 8670M notebook card. No need to set those command line settings if you're on sgminer. Tweak sgminer.conf with these settings and you're good to go.

http://www.overclock.net/t/1461916/tutorial-ultimate-guide-to-tweaking-amd-cgminer-3-7-2-kalroth-edition-sgminer-instructions-included-aswell-get-the-most-hash-out-of-your-gpu