What model/SKU number is your card? Should be on the box with the barcodes and partially printed on a label on the PCB. I have a 11197-03-40G. Sapphire makes quite a few 7970s variants.
It's the same as yours, yeah. But I don't understand why my default is 1025mV and yours is 1170 mV. Similarly my default memory speed is 1425 MHz and yours isn't, is it? These differences mean I can't quite relate it to the other experiences people are having.
I have found out some interesting things playing with it. I can get it to 1150 @1125 mV. It will then mine @ 620MH/s and runs at only around 77 degrees without playing with the fan. That's cool but still not the mining performance I'd expected.
What's the dual bios though and how do I invoke it - is that the difference?
(I also found the cgminer will not set the voltage of clockspeed of it - is it the same for you?)