Neuromorphic Computing for Low-Power Artificial Intelligence
Pith reviewed 2026-05-10 19:05 UTC · model grok-4.3
The pith
Neuromorphic computing uses brain-inspired analog dynamics, sparse signaling, and compute-in-memory to push past the energy-efficiency limits of classical CMOS for AI workloads.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
Classical computing is beginning to encounter fundamental limits of energy efficiency that can no longer be solved by increasing circuit density or refining standard semiconductor processes. By leveraging novel device modalities and compute-in-memory, in addition to analog dynamics and sparse communication inspired by the brain, neuromorphic computing offers a promising path toward improvements in the energy efficiency and scalability of current AI systems through a cross-layer co-design effort spanning new materials and non-volatile device structures, novel mixed-signal circuits and architectures, and learning algorithms tailored to the physics of these substrates.
What carries the argument
Cross-layer co-design that couples new non-volatile materials and devices with mixed-signal circuits and physics-matched learning algorithms to replace separate memory and processor blocks.
Load-bearing premise
That integrated redesign across materials, devices, circuits, and algorithms will actually overcome the fundamental energy limits of classical CMOS technology.
What would settle it
A side-by-side measurement on equivalent AI tasks showing that a complete neuromorphic prototype built from the surveyed materials and circuits uses at least as much energy per operation as the best-optimized digital CMOS system.
Figures
read the original abstract
Classical computing is beginning to encounter fundamental limits of energy efficiency. This presents a challenge that can no longer be solved by strategies such as increasing circuit density or refining standard semiconductor processes. The growing computational and memory demands of artificial intelligence (AI) require disruptive innovation in how information is represented, stored, communicated, and processed. By leveraging novel device modalities and compute-in-memory (CIM), in addition to analog dynamics and sparse communication inspired by the brain, neuromorphic computing offers a promising path toward improvements in the energy efficiency and scalability of current AI systems. But realizing this potential is not a matter of replacing one chip with another; rather, it requires a co-design effort, spanning new materials and non-volatile device structures, novel mixed-signal circuits and architectures, and learning algorithms tailored to the physics of these substrates. This article surveys the key limitations of classical complementary metal-oxide-semiconductor (CMOS) technology and outlines how such cross-layer neuromorphic approaches may overcome them.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. This manuscript is a survey that reviews the energy-efficiency limits of classical CMOS technology under growing AI workloads and sketches neuromorphic alternatives based on novel device modalities, compute-in-memory (CIM), analog dynamics, and brain-inspired sparse communication. It concludes that realizing gains requires cross-layer co-design spanning materials, non-volatile devices, mixed-signal circuits, and tailored algorithms.
Significance. The paper synthesizes established neuromorphic concepts into a coherent high-level narrative and explicitly credits the necessity of co-design across layers, which is a standard but important observation in the field. Because the manuscript contains no new derivations, benchmarks, machine-checked proofs, or falsifiable predictions, its significance is limited to providing an accessible overview rather than advancing the state of the art.
minor comments (3)
- [Abstract] Abstract: the phrase 'fundamental limits of energy efficiency' is stated without a single numerical reference (e.g., pJ/op or TOPS/W figures from recent CMOS AI accelerators); adding one or two concrete citations would strengthen the motivation.
- The survey would benefit from a short table or paragraph contrasting reported energy efficiencies of representative CMOS versus neuromorphic prototypes drawn from the cited literature.
- A dedicated subsection on open challenges (device variability, programming overhead, system-level integration) would balance the optimistic tone and better serve readers.
Simulated Author's Rebuttal
We thank the referee for their review and for recommending minor revision. The manuscript is a survey paper, and we address the referee's observations on its scope and significance below.
read point-by-point responses
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Referee: The paper synthesizes established neuromorphic concepts into a coherent high-level narrative and explicitly credits the necessity of co-design across layers, which is a standard but important observation in the field. Because the manuscript contains no new derivations, benchmarks, machine-checked proofs, or falsifiable predictions, its significance is limited to providing an accessible overview rather than advancing the state of the art.
Authors: We agree that the manuscript is a survey synthesizing established concepts in neuromorphic computing and does not introduce new derivations, benchmarks, or proofs. Our goal was to provide a coherent high-level narrative connecting CMOS energy-efficiency limits with neuromorphic alternatives (CIM, analog dynamics, sparse communication) while stressing the need for cross-layer co-design. We view such integrative overviews as valuable for an interdisciplinary audience, even without new empirical contributions. We have made no changes to add new results, as this would change the paper's intended nature as a review. revision: no
Circularity Check
No significant circularity
full rationale
The paper is a descriptive survey reviewing CMOS energy limits and sketching neuromorphic co-design approaches drawn from prior literature. It contains no original derivations, equations, quantitative predictions, or falsifiable claims whose validity could reduce to fitted inputs or self-citations. The central statement is explicitly descriptive ('offers a promising path') rather than a derivation chain, so none of the enumerated circularity patterns apply.
Axiom & Free-Parameter Ledger
Lean theorems connected to this paper
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IndisputableMonolith/Foundation/RealityFromDistinction.leanreality_from_one_distinction unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
By leveraging novel device modalities and compute-in-memory (CIM), in addition to analog dynamics and sparse communication inspired by the brain, neuromorphic computing offers a promising path toward improvements in the energy efficiency...
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IndisputableMonolith/Cost/FunctionalEquation.leanwashburn_uniqueness_aczel unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
neuromorphic architectures address this issue by restructuring where and how information flows... CNM... CIM... 3D-stacked eNVMs
What do these tags mean?
- matches
- The paper's claim is directly supported by a theorem in the formal canon.
- supports
- The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
- extends
- The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
- uses
- The paper appears to rely on the theorem as machinery.
- contradicts
- The paper's claim conflicts with a theorem or certificate in the canon.
- unclear
- Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.
Reference graph
Works this paper leans on
-
[1]
TrueNorth: Design and Tool Flow of a 65 mW 1 Million Neuron Programmable Neurosynaptic Chip. IEEE Trans Comput-Aided Des Integr Circuits Syst. 34(10):1537–1557. doi:10.1109/TCAD.2015.2474396. Balasubramanian V
-
[2]
Brain power. Proc Natl Acad Sci. 118(32):e2107022118. doi:10.1073/pnas.2107022118. Boahen K
-
[3]
A neuromorph’s prospectus. Comput Sci Eng. 19(2):14–28. doi:10.1109/MCSE.2017.33. 13 Boahen K
-
[4]
Dendrocentric learning for synthetic intelligence. Nature. 612(7938):43–50. doi:10.1038/s41586-022-05340-6. Burr GW, Breitwisch MJ, Franceschini M, Garetto D, Gopalakrishnan K, Jackson B, Kurdi B, Lam C, Lastras LA, Padilla A, et al
-
[5]
Phase change memory technology. J Vac Sci Technol B. 28(2):223–262. doi:10.1116/1.3301579. Custom ASIC | Process Design Kit (PDK) & IP Design | SkyWater
-
[6]
Skywater Technol. [accessed 2025 Nov 19]. https://www.skywatertechnology.com/technology-and-design- enablement/. Decadal Plan for Semiconductors - SRC. [accessed 2025 Nov 12]. https://www.src.org/about/decadal-plan/. Fellous-Asiani M, Chai JH, Thonnart Y , Ng HK, Whitney RS, Auffèves A
work page 2025
-
[7]
doi:10.1103/PRXQuantum.4.040319
Optimizing resource efficiencies for scalable full-stack quantum computers. doi:10.1103/PRXQuantum.4.040319. [accessed 2025 Nov 17]. http://arxiv.org/abs/2209.05469. Fichtner S, Wolff N, Lofink F, Kienle L, Wagner B
-
[8]
AlScN: A III –V semiconductor based ferroelectric,
AlScN: A III-V semiconductor based ferroelectric. J Appl Phys. 125(11):114103. doi:10.1063/1.5084945. Ghosh S, Zheng Y , Zhang Z, Sun Y , Schranghamer TF, Sakib NU, Oberoi A, Chen C, Redwing JM, Yang Y , et al
-
[9]
Monolithic and heterogeneous three-dimensional integration of two- dimensional materials with high-density vias. Nat Electron. 7(10):892–903. doi:10.1038/s41928- 024-01251-8. Han Z, Chen C-C, Pradhan DK, Moore DC, Gudavalli R, Yang X, Kim K-H, Cho H, Anderson Z, Ware S, et al
-
[10]
Kilobyte-scale, selector-free, thermally robust AlScN ferroelectric diode crossbar arrays. Device. 0(0). doi:10.1016/j.device.2025.100974. [accessed 2025 Nov 12]. https://www.cell.com/device/abstract/S2666-9986(25)00287-X. He Y , Moore DC, Wang Y , Ware S, Ma S, Pradhan DK, Hu Z, Du X, Kennedy WJ, Glavin NR, et al
-
[11]
Al₀.₆₈Sc₀.₃₂N/SiC -based metal -ferroelectric-semiconductor capacitors operating up to 1000 °C,
Al0.68Sc0.32N/SiC-Based Metal-Ferroelectric-Semiconductor Capacitors Operating up to 1000 °C. Nano Lett. 25(12):4767–4773. doi:10.1021/acs.nanolett.4c06178. Ho A, Erdil E, Besiroglu T
-
[12]
Limits to the Energy Efficiency of CMOS Microprocessors. doi:10.48550/arXiv.2312.08595. [accessed 2025 Nov 17]. http://arxiv.org/abs/2312.08595. Hu Z, Cho H, Rai RK, Bao K, Zhang Y , Qu Z, He Y , Ji Y , Leblanc C, Kim K-H, et al
-
[13]
Demonstration of Highly Scaled AlScN Ferroelectric Diode Memory with a Storage Density of >100 Mbit/mm2. Nano Lett. 25(37):13748–13755. doi:10.1021/acs.nanolett.5c02961. Ielmini D, Wong H-SP
-
[14]
In-Memory Computing with Resistive Switching Devices
In-memory computing with resistive switching devices. Nat Electron. 1(6):333–343. doi:10.1038/s41928-018-0092-2. Intel
-
[15]
Spiking Manifesto. doi:10.48550/arXiv.2512.11843. [accessed 2025 Dec 24]. http://arxiv.org/abs/2512.11843. Jayachandran D, Oberoi A, Sebastian A, Choudhury TH, Shankar B, Redwing JM, Das S
-
[16]
A low-power biomimetic collision detector based on an in-memory molybdenum disulfide photodetector. Nat Electron. 3(10):646–655. doi:10.1038/s41928-020-00466-9. Kim K-H, Han Z, Zhang Y , Musavigharavi P, Zheng J, Pradhan DK, Stach EA, Olsson RHI, Jariwala D
-
[17]
Multistate, Ultrathin, Back-End-of-Line-Compatible AlScN Ferroelectric Diodes. ACS Nano. 18(24):15925–15934. doi:10.1021/acsnano.4c03541. Kim K-H, Karpov I, Olsson RH, Jariwala D
-
[18]
Wurtzite and fluorite ferroelectric materials for electronic memory. Nat Nanotechnol. 18(5):422–441. doi:10.1038/s41565-023-01361-y. Kim K-H, Oh S, Fiagbenu MMA, Zheng J, Musavigharavi P, Kumar P, Trainor N, Aljarb A, Wan Y , Kim HM, et al
-
[19]
Scalable CMOS back-end-of-line-compatible AlScN/two-dimensional channel ferroelectric field-effect transistors. Nat Nanotechnol. 18(9):1044–1050. doi:10.1038/s41565-023-01399-y. Lanza M, Wong H-SP, Pop E, Ielmini D, Strukov D, Regan BC, Larcher L, Villena MA, Yang JJ, Goux L, et al
-
[20]
Recommended Methods to Study Resistive Switching Devices. Adv Electron Mater. 5(1):1800143. doi:10.1002/aelm.201800143. Le Gallo M, Khaddam-Aljameh R, Stanisavljevic M, Vasilopoulos A, Kersting B, Dazzi M, Karunaratne G, Brändli M, Singh A, Müller SM, et al
-
[21]
A 64-core mixed-signal in-memory compute chip based on phase-change memory for deep neural network inference. Nat Electron. 6(9):680–693. doi:10.1038/s41928-023-01010-1. Levy WB, Calvert VG
-
[22]
Communication consumes 35 times more energy than computation in the human cortex, but both costs are needed to predict synapse number. Proc Natl Acad Sci. 118(18):e2008173118. doi:10.1073/pnas.2008173118. Liu M, Wong H-SP
-
[23]
Toward a Trillion Transistors - IEEE Spectrum. [accessed 2025 Dec 23]. https://spectrum.ieee.org/trillion-transistor-gpu. Liu X, Katti K, Jariwala D
work page 2025
-
[24]
Accelerate and actualize: Can 2D materials bridge the gap between neuromorphic hardware and the human brain? Matter. 6(5):1348–1365. doi:10.1016/j.matt.2023.03.016. Liu X, Ting J, He Y , Fiagbenu MMA, Zheng J, Wang D, Frost J, Musavigharavi P, Esteves G, Kisslinger K, et al
-
[25]
Reconfigurable Compute-In-Memory on Field-Programmable Ferroelectric Diodes. Nano Lett. 22(18):7690–7698. doi:10.1021/acs.nanolett.2c03169. Liu X, Zheng J, Wang D, Musavigharavi P, Stach EA, Olsson R III, Jariwala D
-
[26]
Aluminum scandium nitride-based metal–ferroelectric–metal diode memory devices with high on/off ratios. Appl Phys Lett. 118(20):202901. doi:10.1063/5.0051940. 15 Marinella MJ, Agarwal S
-
[27]
Efficient reservoir computing with memristors. Nat Electron. 2(10):437–438. doi:10.1038/s41928-019-0318-y. Mayr C, Hoeppner S, Furber S
-
[28]
SpiNNaker 2: A 10 million core processor system for brain simulation and machine learning
SpiNNaker 2: A 10 Million Core Processor System for Brain Simulation and Machine Learning. doi:10.48550/arXiv.1911.02385. [accessed 2025 Oct 13]. http://arxiv.org/abs/1911.02385. Mead C
-
[29]
Analog VLSI and neural systems. Reading, Mass. : Addison-Wesley. [accessed 2025 Nov 13]. http://archive.org/details/analogvlsineural00mead. Muir DR, Sheik S
work page 2025
-
[30]
The road to commercial success for neuromorphic technologies. Nat Commun. 16(1):3586. doi:10.1038/s41467-025-57352-1. NVIDIA
-
[31]
NVIDIA H100 GPU. NVIDIA. [accessed 2025 Dec 26]. https://www.nvidia.com/en-au/data-center/h100/. Paredes-Vallés F, Hagenaars JJ, Dupeyroux J, Stroobants S, Xu Y , de Croon GCHE
work page 2025
-
[32]
Fully neuromorphic vision and control for autonomous drone flight,
Fully neuromorphic vision and control for autonomous drone flight. Sci Robot. 9(90):eadi0591. doi:10.1126/scirobotics.adi0591. Pehle C, Billaudelle S, Cramer B, Kaiser J, Schreiber K, Stradmann Y , Weis J, Leibfried A, Müller E, Schemmel J
-
[33]
Neurosci.16, 795876, DOI: 10.3389/fnins.2022.795876 (2022)
doi:10.3389/fnins.2022.795876. [accessed 2025 Oct 13]. https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2022.795876/full. Pradhan DK, Moore DC, Kim G, He Y , Musavigharavi P, Kim K-H, Sharma N, Han Z, Du X, Puli VS, et al
-
[34]
A scalable ferroelectric non-volatile memory operating at 600 °C. Nat Electron. 7(5):348–355. doi:10.1038/s41928-024-01148-6. Ravichandran H, Knobloch T, Subbulakshmi Radhakrishnan S, Wilhelmer C, Stepanoff SP, Stampfer B, Ghosh S, Oberoi A, Waldhoer D, Chen C, et al
-
[35]
Life and death of colloidal bonds control the rate-dependent rheology of gels
A stochastic encoder using point defects in two-dimensional materials. Nat Commun. 15(1):10562. doi:10.1038/s41467- 024-54283-1. Rehman MM, Rehman HMMU, Gul JZ, Kim WY , Karimov KS, Ahmed N
-
[36]
Decade of 2D- materials-based RRAM devices: a review. Sci Technol Adv Mater. 21(1):147–186. doi:10.1080/14686996.2020.1730236. Rupp K
-
[37]
CPU, GPU and MIC Hardware Characteristics over Time | Karl Rupp. [accessed 2025 Nov 19]. https://www.karlrupp.net/2013/06/cpu-gpu-and-mic-hardware-characteristics- over-time/. Rupp K
work page 2025
-
[38]
karlrupp/microprocessor-trend-data. [accessed 2025 Nov 12]. https://github.com/karlrupp/microprocessor-trend-data. Sarkar S, Liu X, Jariwala D
work page 2025
-
[39]
Can a ferroelectric diode be a selector-less, universal, non- volatile memory? MRS Energy Sustain. 12(2):291–300. doi:10.1557/s43581-025-00137-2. 16 Schranghamer TF, Pannone A, Kumar JM, Thiyyadi Baiju DK, Chen C, McKnight T, Tadekawa S, Haines E, Ordonez R, Hayashi C, et al
-
[40]
Large-scale crossbar arrays based on three- terminal MoS2 memtransistors. Nat Commun. 16(1):9518. doi:10.1038/s41467-025-64536-2. Song S, Pradhan DK, Hu Z, Zhang Y , Keneipp RN, Susner MA, Bhattacharya P, Drndić M, Olsson RH, Jariwala D
-
[41]
Observation of giant remnant polarization in ultrathin AlScN at cryogenic temperatures. doi:10.48550/arXiv.2503.19491. [accessed 2025 Nov 12]. http://arxiv.org/abs/2503.19491. Technology-alt. Celest AI. [accessed 2025 Nov 12]. https://www.celestial.ai/technology-1. Traversi G, Gaioni L, Ratti L, Re V , Riceputi E
-
[42]
Trochatos T, Kang C, Chong FT, Szefer J
doi:10.1109/TNS.2024.3382348. Trochatos T, Kang C, Chong FT, Szefer J
-
[43]
In: 2025 26th International Symposium on Quality Electronic Design (ISQED)
Exploration of Vulnerabilities of Fault-Tolerant Quantum Computing. In: 2025 26th International Symposium on Quality Electronic Design (ISQED). p. 1–6. [accessed 2025 Nov 17]. https://ieeexplore.ieee.org/document/11014388. Yu S, Jiang H, Huang S, Peng X, Lu A
-
[44]
Compute-in-Memory Chips for Deep Learning: Recent Trends and Prospects. IEEE Circuits Syst Mag. 21(3):31–56. doi:10.1109/MCAS.2021.3092533. Zahoor F, Azni Zulkifli TZ, Khanday FA
-
[45]
Resistive Random Access Memory (RRAM): an Overview of Materials, Switching Mechanism, Performance, Multilevel Cell (mlc) Storage, Modeling, and Applications. Nanoscale Res Lett. 15(1):90. doi:10.1186/s11671-020-03299-9. Zhu L, Mangan M, Webb B
-
[46]
Neuromorphic sequence learning with an event camera on routes through vegetation. Sci Robot. 8(82):eadg3679. doi:10.1126/scirobotics.adg3679
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