7 ms·

12 GHz on 180nm? Sorry, that's not possible. What's the actual clock speed?

by bgnn 5mo ago

morphle 5mo ago
Morphle Logic is asynchronous logic so there is no clock. At 110nm I measured when a transistor was switching the second transistor on its output. I can prove it, can you disprove it? A consistent 12Ghz signal cascade was (repeatedly) tested and confirmed on a 28nm asynchronous chip [1]. Why would it be impossible? [2]. We measure 800 Ghz and teraherz clocks on niobium superconducting Josephson Junctions [3,4,5]. [1] https://byrdsight.com/asynchronous-technology-has-its-time-finally-arrived/ https://byrdsight.com/asynchronous-technology-has-its-time-f... ( See also on the slides in the video talk) [2] "If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong." - Arthur C. Clarke [3] Ivan Sutherland Keynote Single Flux Quantum SFQ Ditigal Electronics Digital circuits totally distinct from Quan https://www.youtube.com/watch?v=KMVV3ErGSVY https://www.youtube.com/watch?v=KMVV3ErGSVY [4] https://www.researchgate.net/profile/Jerome-Pety/publication/3120246_A_850-GHz_waveguide_receiver_employing_a_niobium_SIS_junctionfabricated_on_a_1-mm_Si3N4_membrane/links/0c9605253e9ead0393000000/A-850-GHz-waveguide-receiver-employing-a-niobium-SIS-junctionfabricated-on-a-1-mm-Si3N4-membrane.pdf https://www.researchgate.net/profile/Jerome-Pety/publication... [5] https://scholar.google.com/scholar?hl=en&as_sdt=0,5&qsp=3&q=900ghz+niobium&qst=bl https://scholar.google.com/scholar?hl=en&as_sdt=0,5&qsp=3&q=...
- Bluebirt 5mo ago
  You must be fun at parties...
adrian_b 5mo ago
Complex processors like AMD Athlon and Intel Pentium 4, which were made in 180 nm a quarter of century ago, had clock frequencies between 1 GHz and 2 GHz. Pentium 4 used internally a double frequency clock for the simpler 32-bit arithmetic-logic units, i.e. up to around 4 GHz. Today the manufacturing process could be better optimized than 25 years ago, so some logic circuits much simpler than a 64-bit CPU (the previous were 32-bit CPUs for integers, but they had 64-bit/80-bit FPUs working at full speed), i.e. with much less gate delays per pipeline stage, might be able to reach 12 GHz. However, something like a 64-bit ALU will certainly not reach 12 GHz. Even a 32-bit ALU is very unlikely to reach 12 GHz. Simple things, like shift registers and Galois-field counters, might reach such speeds, or even higher. The next CMOS process generation, i.e. 130 nm, already allows making complex processors with more than a half of the maximum clock frequency of the fastest processors of today. It also allows making analog amplifiers and mixers for the 5 GHz WiFi frequency bands.
- bgnn 5mo ago
  This is plainly wrong. I'm a chip designer. There's no way to implement a DFF operating at 12 GHz in 180nm, period. This isn't an optimization problem, it is physics.

12 GHz on 180nm? Sorry, that's not possible. What's the actual clock speed?

by bgnn 5mo ago

12 GHz on 180nm? Sorry, that's not possible. What's the actual clock speed?

Morphle Logic is asynchronous logic so there is no clock. At 110nm I measured when a transistor was switching the second transistor on its output. I can prove it, can you disprove it? A consistent 12Ghz signal cascade was (repeatedly) tested and confirmed on a 28nm asynchronous chip [1]. Why would it be impossible? [2]. We measure 800 Ghz and teraherz clocks on niobium superconducting Josephson Junctions [3,4,5]. [1] https://byrdsight.com/asynchronous-technology-has-its-time-finally-arrived/ https://byrdsight.com/asynchronous-technology-has-its-time-f... ( See also on the slides in the video talk) [2] "If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong." - Arthur C. Clarke [3] Ivan Sutherland Keynote Single Flux Quantum SFQ Ditigal Electronics Digital circuits totally distinct from Quan https://www.youtube.com/watch?v=KMVV3ErGSVY https://www.youtube.com/watch?v=KMVV3ErGSVY [4] https://www.researchgate.net/profile/Jerome-Pety/publication/3120246_A_850-GHz_waveguide_receiver_employing_a_niobium_SIS_junctionfabricated_on_a_1-mm_Si3N4_membrane/links/0c9605253e9ead0393000000/A-850-GHz-waveguide-receiver-employing-a-niobium-SIS-junctionfabricated-on-a-1-mm-Si3N4-membrane.pdf https://www.researchgate.net/profile/Jerome-Pety/publication... [5] https://scholar.google.com/scholar?hl=en&as_sdt=0,5&qsp=3&q=900ghz+niobium&qst=bl https://scholar.google.com/scholar?hl=en&as_sdt=0,5&qsp=3&q=...

Bluebirt 5mo ago
You must be fun at parties...

adrian_b 5mo ago

Complex processors like AMD Athlon and Intel Pentium 4, which were made in 180 nm a quarter of century ago, had clock frequencies between 1 GHz and 2 GHz. Pentium 4 used internally a double frequency clock for the simpler 32-bit arithmetic-logic units, i.e. up to around 4 GHz. Today the manufacturing process could be better optimized than 25 years ago, so some logic circuits much simpler than a 64-bit CPU (the previous were 32-bit CPUs for integers, but they had 64-bit/80-bit FPUs working at full speed), i.e. with much less gate delays per pipeline stage, might be able to reach 12 GHz. However, something like a 64-bit ALU will certainly not reach 12 GHz. Even a 32-bit ALU is very unlikely to reach 12 GHz. Simple things, like shift registers and Galois-field counters, might reach such speeds, or even higher. The next CMOS process generation, i.e. 130 nm, already allows making complex processors with more than a half of the maximum clock frequency of the fastest processors of today. It also allows making analog amplifiers and mixers for the 5 GHz WiFi frequency bands.

bgnn 5mo ago
This is plainly wrong. I'm a chip designer. There's no way to implement a DFF operating at 12 GHz in 180nm, period. This isn't an optimization problem, it is physics.