hi.  I have the Rog Strix 580 8gb.  I have modded bios to achieve 29.2 mhs.  My setting are 1100 core and 2100 memory clocks.  I have it under volted to 1050.  Its stable dual mining eth and dcr at 29.2 and 730ish.  The card is running around 205w.  I am just wondering if anyone has better performance from these cards at a lower power draw.  Thanks!