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RDNA4 owners get faster SageAttention in ComfyUI

By PulseAugur Editorial · [1 sources] ·

A developer has created an optimized SageAttention build for AMD's RDNA4 graphics cards, specifically targeting the RX 9070 and 9070 XT on Windows. This custom build utilizes an fp8 attention kernel written in HIP, achieving faster performance compared to existing ports and PyTorch's Scaled Dot-Product Attention (SDPA). While the kernel-level gains are significant, the overall impact on ComfyUI sampling steps is a 5-14% improvement, with the author detailing the technical journey and caveats in a GitHub repository. AI

IMPACT Improves performance for users of specific AMD GPUs running ComfyUI, potentially speeding up image generation workflows.

RANK_REASON Optimization of a specific component (SageAttention) for a particular hardware/software combination (RDNA4 GPUs on ComfyUI).

Read on r/StableDiffusion →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

RDNA4 owners get faster SageAttention in ComfyUI

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
Optimization of a specific component (SageAttention) for a particular hardware/software combination (RDNA4 GPUs on ComfyUI).
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
infra, product
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
3 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [1]

  1. r/StableDiffusion TIER_2 English(EN) · /u/Familiar_Worry332 ·

    RDNA4 owners on ComfyUI: I made SageAttention actually fast on the 9070 XT, here's the build plus every caveat

    <table> <tr><td> <a href="https://www.reddit.com/r/StableDiffusion/comments/1wve3q3/rdna4_owners_on_comfyui_i_made_sageattention/"> <img alt="RDNA4 owners on ComfyUI: I made SageAttention actually fast on the 9070 XT, here's the build plus every caveat" src="https://preview.redd.…

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