Save the profile, and edit it by hand in a text editor (mine is called mem300.ovdr)

You must change the mem param of the performance levels 1 and 2 to 30000.
Then you can load the profile from the command line with
Where N is the id number reported by

However, I don't know (yet) how to adapt the voltage for these lower memory clock rates...


Amazingly, lowering the memory clock increased the hash rate from ~320 to ~325 MH/s