My card is a Powercolor. I'm now on 930/1375 making 401Mh/s
How do you get the memory down to 333?
I'm also running a PowerColor 6970.
I've had better luck with ATI Tray Tools than MSI Afterburner in getting the memory clock down... and for ease of use.
I'm running my 6970 at 960/350 now and it's running 5-6C cooler than it was at 940/1425.
Also, with the memory underclocked the "power control" no longer seems to make a difference... I get 400-410Mh/s regardless of if I'm at 0% or +5%.
I think the power control kicks in based on the total draw of the card, so my presumption is with the memory drawing so much less power I'm not bumping into that limiter anymore.