optiminer-zcash-1.6.0 is 15% faster on Pitcairn.
Claymore?
Claymore?
I've tried it and get 240 on my rx480 ad opposed to 280 and 3 (yes three) on my 7950 as opposed to 270
yes.yes
It may depend on particular card. I do not see that high difference.
In my case Tahiti with opti is exactly the same speed 260 (R9 280), Pitcairn is slightly faster 184 vs 178 (R7 370) and Hawaii also a bit faster 385 vs 360 (R9 290).
Nice about opti is that it has slightly lower power usage and no so sharp and high power spikes.