Guide: Running SageAttention and MiniMax H3 on RTX 50 Series
Shenanigans__Galore · reddit · 2026-08-11
Addressing the compatibility pain points of the new RTX 50 series (Blackwell architecture) GPUs, a developer shared a detailed step-by-step tutorial to successfully run SageAttention with the MiniMax H3 video model.
Core Steps:
- Prerequisites: Install Git and Visual Studio Build Tools. Use the ComfyUI Desktop terminal to install a specific version of Triton (triton-windows<3.8) and a precompiled SageAttention wheel.
- Node Installation: Clone necessary nodes like ComfyUI-KJNodes and ComfyUI-SolAttntriton via Git, and install video helper plugins via ComfyUI Manager.
- Workflow Connection: Chain nodes in the order of Patch Sage Attention -> MiniMax H3 Mem Eff Sage Attention Patch -> Patch Sol-Attn -> EasyCache, with an optional Turbo Lora for acceleration.
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