Yipyip, in other words, according to kncminer, by "tape-out" they mean to say that the chip is beyond theoretical design, and is now actually in the fabrication (or build it stage as you put it) plant where they make ASIC chips?
Anyone know how long it takes to fab 50 wafers?
Fabrication time for 50 wafers is 25 hours
LOL. Where are you coming from? PCB manufacturing?
A realistic statement would be "Fabrication time of
one layer of 50 wafers is 25 hours". Do you know how many layers a 28nm design has?