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Seagate Announces 16TB HDD

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Re: Seagate Announces 16TB HDD

#222
post #221

Earlier quoted context omitted.

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

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

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.

Re: Seagate Announces 16TB HDD

#223
post #221

Earlier quoted context omitted.

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

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.

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