That is pretty much what I have, although mine is clocked lower. My cgminer reports 2.722M per blade, which is also reflected in the stats at the pool I mine at.
--gridseed-options=baud=115200,freq=800,chips=40,modules=1,usefifo=0
Have you tried pointing it at a pool and seeing what their stats report?
the pool does report that correct has rate - over 15 mhs in my case but I'd like cgminer to report it properly also - especially since I've seen examples my people whose cgminer is reporting properly - case in point:
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fhighoncoins.com%2Fwp-content%2Fuploads%2F2014%2F04%2Fhowto-make-gridseed-blade-mining-rig-6-690x454.jpg&t=663&c=D_lpoRqINrNVJQ)