Running MiniMax H3 on RTX 5060 Ti: Resolution is the Real Bottleneck
danielcar · reddit · 2026-08-14
A developer shared benchmarks for running the MiniMax-H3 video model (with a 4-step Turbo LoRA) on an AMD Strix Halo APU. The test reveals that resolution is the primary bottleneck, not step count. Because attention scales quadratically with tokens, computing at 1344x768 takes 49x more attention work than 512x288, stalling at step 1 after 16 minutes.
Additionally, the author found that quantized weights published by Abiray were corrupted by trailing upload-tool markers, causing ComfyUI loading failures. Truncating the extra bytes fixed the issue and matched the SHA256 of the clean Comfy-Org version. New users are advised to use the Comfy-Org files directly.
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