On Sat, 31 Jul 2004, Major Variola (ret) wrote:
Tyler D asked about how the NSA could be so far ahead. Besides their ability to make 2" sq. chips at 10% yield (not something a commercial entity could get away with)
What, exactly, would be the point of doing this?
they can also *thin and glue* those chips into say stacks of 5 thinned die.
As easily as you could do this to high efficiency chips.
2" sq = 4 x performance
How do you figure 4x performance on a 2" chip? Most of the chip performance is tied to the total distance that signals must traverse across the chip surface.
5 thinned die with GHz vias = 20 x performance.
with any chip, regardless of design.
Both are uneconomical but feasible. Get it?
No.
Any questions?
Yes. See above. -- Yours, J.A. Terranson sysadmin@mfn.org 0xBD4A95BF "...justice is a duty towards those whom you love and those whom you do not. And people's rights will not be harmed if the opponent speaks out about them." Osama Bin Laden - - - "There aught to be limits to freedom!" George Bush - - - Which one scares you more?