No.
7970's
cannot obtain
stable settings at intensities above 13.
I don't know why, but I haven't heard of one case where anyone was able to attain a stable configuration with an -I 13+
Set -g to 2, -I to 13, and --thread-concurrency to 8192
Anyone who says intensities above 13 are stable for 7970s don't know what they are talking about.
btw, did anyone receive your 15LTC reward yet?

I've run a 7970 for hours at i20 not a hw error in sight , don't really care if you believe me or not , I spent a lot of time on them .
Most of the devices I have are 7950 , they are generally better value , but the configuration I have both perform similar.
Only issue I have is the normal issues related to heat dissipation.
So disregard information that suggests I 13 only , I've never run a card under i17.