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Reviving ConvNeXt for Efficient Convolutional Diffusion Models

arXiv cs.CV / 3/11/2026

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Key Points

  • The paper introduces the fully convolutional diffusion model (FCDM) with a backbone inspired by ConvNeXt, tailored for conditional diffusion modeling.
  • FCDM-XL achieves competitive generative performance using only half the FLOPs of transformer-based DiT-XL/2 models and requires significantly fewer training steps at high resolutions.
  • The architecture demonstrates notable training efficiency by enabling training on a 4-GPU setup, which is lower hardware demand compared to some transformer models.
  • This work revives modern convolutional designs as a viable and efficient alternative to transformers for scaling diffusion models in generative tasks.
  • The study highlights the balance of locality bias, parameter efficiency, and hardware friendliness inherent in ConvNeXt-like convolutional architectures for generative AI.

Computer Science > Computer Vision and Pattern Recognition

arXiv:2603.09408 (cs)
[Submitted on 10 Mar 2026]

Title:Reviving ConvNeXt for Efficient Convolutional Diffusion Models

View a PDF of the paper titled Reviving ConvNeXt for Efficient Convolutional Diffusion Models, by Taesung Kwon and 7 other authors
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Abstract:Recent diffusion models increasingly favor Transformer backbones, motivated by the remarkable scalability of fully attentional architectures. Yet the locality bias, parameter efficiency, and hardware friendliness--the attributes that established ConvNets as the efficient vision backbone--have seen limited exploration in modern generative modeling. Here we introduce the fully convolutional diffusion model (FCDM), a model having a backbone similar to ConvNeXt, but designed for conditional diffusion modeling. We find that using only 50% of the FLOPs of DiT-XL/2, FCDM-XL achieves competitive performance with 7$\times$ and 7.5$\times$ fewer training steps at 256$\times$256 and 512$\times$512 resolutions, respectively. Remarkably, FCDM-XL can be trained on a 4-GPU system, highlighting the exceptional training efficiency of our architecture. Our results demonstrate that modern convolutional designs provide a competitive and highly efficient alternative for scaling diffusion models, reviving ConvNeXt as a simple yet powerful building block for efficient generative modeling.
Comments:
Subjects: Computer Vision and Pattern Recognition (cs.CV); Artificial Intelligence (cs.AI); Machine Learning (cs.LG)
Cite as: arXiv:2603.09408 [cs.CV]
  (or arXiv:2603.09408v1 [cs.CV] for this version)
  https://doi.org/10.48550/arXiv.2603.09408
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arXiv-issued DOI via DataCite

Submission history

From: Taesung Kwon [view email]
[v1] Tue, 10 Mar 2026 09:24:30 UTC (16,066 KB)
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