FisherKing-MiniMax-H3-[4Steps]-T2V-ReferenceWorkflow-v1.0 [Low VRAM]

Workflow Goal:

Provide a clean reference implementation for MiniMax H3 based text-to-video generation.

This workflow focuses on simplicity, reproducibility, and education rather than including every available feature or optimizations. It reflects a tested baseline for producing high-quality videos from a prompt. Treat it as a starting point and adapt the prompt and LoRA stack for your preferred artistic direction.

IMPORTANT NOTE:

Validated using an NVIDIA RTX 2080 (8 GB VRAM) with 64 GB System RAM.

Low VRAM does not mean low hardware requirements.

MiniMax H3 Text-to-Video is computationally intensive. Even when GPU VRAM is managed efficiently, higher resolutions and longer videos can require substantial system RAM for memory paging and intermediate data.

## Model

- MiniMax H3 INT8 quantized diffusion model

https://civitai.red/models/2830065/minimax-h3-int8int4-convrot

- Qwen3-VL 32B NF4/AWQ text encoder

https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/text_encoders/qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors

- H3 Video VAE FP16

https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/vae/minimax_h3_video_vae_fp16.safetensors

- H3 Audio VAE FP32

https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/vae/minimax_h3_audio_vae_fp32.safetensors

- MiniMax H3 Turbo LoRA

https://civitai.red/api/download/models/3206543?fileId=3088145

## Tested Configuration

- GPU: NVIDIA RTX 2080 8 GB

- System RAM: 64 GB

- Resolution: 768 × 512

- Duration: 5 seconds

- CFG: 1.0

- Sampler: res_multistep

- Scheduler: simple

## Steps

4 steps + Turbo LoRA

- Primary configuration.

- Good visual quality, motion, effects and audio.

- Very fast relative to the base model.

- Slight slow-motion feel may occur at the beginning of some clips.

## Optimization

- No hardware-specific attention optimizations used.

- No SageAttention.

- No other VRAM/speed optimization nodes or launch parameters required.

- Reference workflow intentionally uses the standard H3/ComfyUI execution path.

## Credits

- MiniMax H3: MiniMax

- H3 ComfyUI implementation / model work: Kijai

- Turbo LoRA: LightX2V

- INT8 quantization: see model source linked above

- Workflow reference: MiniMax H3 community/reference workflow