i was really impressed with this program, until i tried to save the mem/core clock speeds and it caused the PC to lock up, as it applied the speed, but not the fan, and then not the voltage, etc. and then only to one card. it might have been an older version but it was annoying at the time.

i did end up editing the ini files, but the clock rates didn't apply properly, and i had to reboot into safe mode to tweak overclock rates. i think the main problem was that the fans didnt kick in or allow easy granular control via the sliders, you could set 40 and hit fan speed, and then you'd move the slider to 55 and it wouldn't set unless you did it quickly. again, older version.

that said, it's a great program for unattended use, and had it running for 5 hours, with each card having different rates and performance settings. it works great.

at the moment, i find it's easier to use barelyclocked and cgminer in a batch script and put a shortcut to the start.bat file in the startup folder, it also makes sure to return clock/fan/voltage rates back to normal when you close the window or quit cgminer, which can be a help when you need to shut down,  be in the same room as 4 GPU fans at 70-80%, or play games for a few hours and return to mining, etc.