On 280x now 12.5 on 130-12.5 on 150 - 11.66 on 160 -11.12
on 290 there is no difference all is the same
on 470 28.5 - 28.4-23.8-21.5
So go for 290 and 390 if you don`t want a dag problem!
hawaii (290 or 390) will also have DAG problem but later - after epoch 200.
nVidia Pascal doesn't have this problem