cudaminer.exe -a keccak -C 1 -m 1 -l F768x16 -L 512 -i 0 -o http://localhost:8332 -u sekritagentman -p BondJamesBond

[2014-02-08 19:59:40] GPU #0: GeForce GTX 460, 47569 khash/s
[2014-02-08 19:59:40] GPU #1: GeForce GTX 460, 48445 khash/s


Any optimization tips?