IBM unveils world's first 5nm chip
- posted
6 years ago
IBM unveils world's first 5nm chip
How many silicon atoms does it take to make 5 nm?
George H.
About 45.
-- Rick C
If you want a 5 nm long "wire" you need about 9 lattices, each with 8 atoms.
-- Saludos
ms.
Right, (not a well formed question) Say a square wire, 5nm on a side. Then (as you say) 9 lattices times 8 atoms / lattice, a total of
9^2*8 = 648 atoms, about 26 atoms on a side.George H.
On a sunny day (Mon, 5 Jun 2017 11:52:42 -0400) it happened rickman wrote in :
Yes, google gives 210 pm (pico meter) for a si atom, so
-> 5E-9/210E-12 = 23.8095 so 24 without the big atom splitter :-)
But I am no chemist .. likely there needs to be some crystal structure or something. Maybe Bill Sloman?
One scanner, with its EUV source, costs over $120 million. The NRE for one chip, design and masks, is about $250 million. Not many chips can justify that: flash, DRAM, possibly a high-volume processor.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement
John Larkin wrote on 6/5/2017 1:27 PM:
Did you see the size of the chip in the link? It's larger than any chip I've ever seen. I think 2x4cm.
-- Rick C
Silicon forms a face-centered diamond-cubic with a 0.543 nm side length and 8 atoms per cube, see:
so a 5x5x5 nm silicon cube contains about 9*9*9*8 = 5832 atoms
-- Saludos
Den mandag den 5. juni 2017 kl. 19.28.08 UTC+2 skrev John Larkin:
and fpgas
Maybe. The trend seems to be to fab one chip and sell it as a range of parts, by blowing fuses or by selling partly defective chips as cheaper parts. We buy two different-size, different-priced Altera parts that seem to be identical.
Here's an EUV scanner. The EUV target droplet chamber is at the far end.
I don't know why those guys are wearing bunny suits. The wafers are in vacuum.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement
ISO 9000
On a sunny day (Mon, 5 Jun 2017 20:08:33 +0200) it happened Miguel Giménez wrote in :
Thank you, nice visualisation.
John Larkin wrote on 6/5/2017 2:51 PM:
The same reason you don't pile the hospital waste in the room next to the OR.
-- Rick C
John Larkin wrote on 6/5/2017 2:51 PM:
It's not that they sell "defective" chips as smaller chips. They save money by simply testing less of the chip and selling it as a smaller device. Just like for very high volume customers who aren't looking for reconfigurability, they will test to your design usage which ends up being a
*much* smaller percentage of the chip with appropriately reduced test time. Much less NRE than an ASIC (even one made to match your FPGA) but much lower prices than fully qualified FPGAs.-- Rick C
Or high value processor. Are you sure about the $250M number?
Could equip the next several of these
NT
Precisely. As my boss at IBM once said, it's better to work for people with money. ;-)
That's a number that I've seen in electronics mags.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement
It looks like those 2x4cm structures might be several dies with a test die for the group.
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