which brand 7950 is the best for mining?

[critical]

which brand 7950 is the best for mining? over 600+ hashes

powercolor, sapphire? etc?

thanks

so far from what i read it seem gigabyte is best, but where i stay dont seem to have gigabyte 7950 in stock, only sapphire, asus (kinda pricey), powercolor, etc

[Phrozenwind]

I have the Rev.2 Sapphire 7950 and can push about 630mH/s. Although it is voltage locked I am able to overclock the core to 1200 and memory to 1050mhz, it also runs quite cool around 75 degrees with the fans on 75%

Thats just my 2 satoshi

[critical]

Is it vapor x