An added complication is that pure silicon in the required quantities is not che...

6nf · on Dec 6, 2018

The amount of silicon we're talking about here is only a couple of cents per device

Thetawaves · on Dec 8, 2018

'16TB' of silicon at current rates is not a few cents, not even close.

6nf · on Dec 12, 2018

Sure it is, where do you buy your silicon wafers?

Thetawaves · on Dec 12, 2018

64L 3D NAND flash is about 4.40Gb/mm^2. 16TB = 131,072Gb. 29,789mm^2.

70,686mm^2/std 300mm wafer.

Roughly 2 dies/wafer, with exceptional packing, and don't account for defect rates.

Average $0.74/in^2

109.56in^2/std 300mm wafer

81$/std 300mm wafer

roughly 40$ in materials BEFORE you even start talking about the processes to build up 64 layers, and everything else.

6nf · on Dec 21, 2018

Big fabs don't pay $80 for one 300mm wafer