Well, I have the Windforce 7950 GHz (GV-R795WF3-3GD). Not that impressed. The GHz BIOS was crazy (default 1.25V) but I was able to force the older F43 (fairly safe since it has dual BIOS but to use ATIWinflash the card cannot be the primary). But that still locks the voltage at 1.09V which while it is okay up to 1100MHz for me, is not ideal since for ~1000MHz I think 1.05V or even 1.00V should be possible and would save me few watts plus run cooler.

The other negative with the Winforce 7950 (unsure about the 7970) is that Gigabyte skimped and didn't equip with a good monitoring chip so no info on VRM temps, GDDR5 voltages etc. - just vcore, core temp and fan speed.

Cooler are good though and no sign of any coil whine.