if its happen we will see that the mining speed will increasing, but we should see the effect, the effect is there are many people in this world that buy that GPU to mining, and I think it will makes the mining difficulty is increasing, so its not helping at all
I agree, because the supply will not fit the demand of the people. But that GPU was really helpful for some people who first have it because it increase the mining speed. On the other hand we need more electricity for it. The amout hash will also increase since they see that the demand of it will grow.