Oh yes it is
I have been seeing alot of people using high vdim on this board and none of them have had problems with cpu's breaking. I have seen about 4 people using ~3.7v 24/7 and a few more around 3.5v 24/7 and their processors are fine. Seems like the random a64 death due to high vdim might be a thing of the past...but I guess it is too soon to jump to conclusions.