I just got one of these cards(the ones with 4 pci-e power connectors) but, I need a little help with the command switches to get it running faster.
I found these settings for the 512 board in the old VMC thread:
cgminer.exe --hfa-fan 100 --hfa-hash-clock 720

I am using a Pi with the latest version of minepeon. If I use the default cgminer settings in minerpeon the board just keeps cycling power every 10sec... If I use the default bfgminer settings, it hashes fine at around 220gh and temps stay low at 69-70c, very stable.   Are there recommended clock settings for this board?  can I use --hfa or another switch with bfgminer?

I would like to figure out how to set fan and clock settings using bfgminer if possible, or if not, how to get cgminer to work.

It's connected to a Seasonic x-850 power supply and a CoolitSystems water cooler.