So, at 193 or 200hz (the only 2 freq i have listed under 250hz) cgminer miner start but show 0 hashrate. For the skeptics that still need a screenshot;
http://imgur.com/kWVVXXE #option 'freq_value' '0781' #200M
#option 'chip_freq' '200'
#option 'timeout' '70'
#option 'freq_value' '4f02' #193M
#option 'chip_freq' '193'
#option 'timeout' '70'
Both does not work, tested on different S1's, the same thing happen, they are penmodded to 2.8-3 ohm.
My goal is to undervolt them to the max, rumored to go down to 90GH/s for 80watts, any input would be appreciated.