On how the NSA can be generations ahead
J.A. Terranson
measl at mfn.org
Sun Aug 1 08:20:38 PDT 2004
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 at 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?
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