What is the power consumption like?
This.
It's the only bit of information I'm missing here.
Me too. I want to buy a PSU, but do not know how much W it will need for 4x HEX16A2.
Me too. I want to buy a PSU, but do not know how much W it will need for 7x HEX16A2.
Looking at HEX16B .835v verses HEX16A2 1.258v which is a 50% difference per chip
And the 2Good review of HEX16B that said it was 37.2-52.2w depending on oveclock.
My guess would be the HEX16A2 would be 55.8-78.3w with the higher range assuming it's similarly overclockable.