Complete Guide to Enabling SageAttention on RDNA4: RX 9070 XT Tested
eloxH1Z1 · reddit · 2026-08-18
A Reddit user shared a detailed guide for compiling SageAttention on RDNA4 GPUs (RX 9070 XT) for ComfyUI Portable. Steps include installing Visual Studio Build Tools 2022 (MSVC 14.38), installing ROCm devel SDK, copying Python dev headers, cloning and building the gfx12 branch, installing triton-windows, verifying, and enabling in ComfyUI. Launch profiles for 16GB VRAM are provided, with discussion of MiniMax H3 memory management.
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