I'm guessing this thread is expected to be AMD, but GTX 1060-1070ti are also GDDR5, has anyone made leeway there?
I seem to find that the expected timing enhancements do not bring much enhancement. GDDR5X has been a lot more interesting but i suppose that would be OT.
AFAIK Nvidia timings are not changeable, be it GDDR5 or GDDR5X
I was under the same impression until some time ago. I thought its possible to have something in the works, and it turns out i was correct to myself. It is not possible for the public. There are some stuff, which are confidential and allow some sort of control.
Of course, I didn't say its impossible, but keys are distributed to card manufacturers and probably under very strict NDA
Those card makers have to be able to program their cards firmware, after all

I'm very curious about this. But I think it wont bee available to common users.