I've been successfully using from 1 to four gekkoscience newpac miners for a few weeks now.

Today I decided to try my hand at overclocking them.

Using the following type command:
"cgminer -o stratum+tcp://stratum.bravo-mining.com:3333 -user - password -p x --suggested diff 1 --gekko-newpac-freq 100"

I changed "gekko-newpac-freq 100" to "gekko-newpac-freq 150"

And I saw no change in frequency..... It stayed at 100.
Power cycling did not accomplish anything.

Any suggestions?

TNX