Hi Guys!

I'm currently in the market for a 7970 for mining. On the MHC wiki, some 7970's can go around 750 MH/s, but after browsing many forums, people seem to be frequently having trouble with 7970s, resulting in speeds closer to 500 MH/s.

So, which 7970 is currently the best to get?
(I'm looking mainly at cards with NON-reference coolers, and an unlocked voltage is good to overclock and get more MH/s!)

Also, do any of you have the 7970? If so, which brand, and what speeds are you looking at?

Thanks a lot guys!

-Dan