AnalysisDevelopersAugust 14, 2026

ComfyUI on ROCm cuts H3 completion time in half with CK Attention

ComfyUI 0.33.1 with CK Attention and Dynamic VRAM support on ROCm halved Total Minmax H3 completion time on an RX 7900 XT (20GB VRAM) versus baseline. User reports greatly improved ROCm performance and reliability with up-to-date ComfyUI, ROCm, and PyTorch.

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