yesssss, I was about to suggest that, too :-) Thanks Silvano.
I almost physically crawled into my XFX 7970 ... and it's all documented there.
Would be interesting to see for me, how similar/different a sapphire 7970 is.
Happy mining!

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P.S.: Let's spread the word, imagine the altcoin network starts saving 1/4, 1/3 or even 1/2 of electricity.
