Great thread, but I think you should add fijis with hawaiis there: fury, fury x and nano cards since they are all from the same era.

anyways, my 390 and 390x get 800 and a little above 800 H/s on the v7, on the v8 they perform slightly worse - around 780 H/s all stock clocks.

On the other hand, my fijis (have them all 3) on v7 get the same hashrate as 390, but on v8 even worse then hawaii, 650 H/s at best, obviously they're running less hot and consuming less power than hawaiis,
but I don't know if I'm doing something wrong here.
How is it possible that fijis have worse mining performance than hawaii cards in v7 and v8 when fijis are clearly more powerful than hawaiis?

Does somebody here have a better experience with fijis than me in v7/v8 mining?