Chips used: 940/ 2x 965 (all C0 stepping)

QPIV: ~1.45V (real) all the time.
VDram: 1.7V-2.05V depending of usage (2.05V is for benching and I used this voltage 15+ hours this weekend)

Hundreds of hours of basic testing without any problems in past two months.

I would like to see others post same results, so we can cut the wings of this rumor, which is based on user reports from stepping B era.
I do know that there is reason for 1.65V limitation and you don't need much more in 24/7 use. Do not go over that limit if you don't feel that you have to.
That is the most easiest solution and you know that the risk is your own.