MiniMax H3 Local Benchmarks: Performance and Optimization Across GPUs
Following the release of the MiniMax H3 open-source video generation model, communities like Reddit quickly saw a surge of local testing posts. These tests covered a wide range of GPUs from the RTX 3080 to the RTX PRO 6000 and shared various ComfyUI optimization strategies. Overall, while the model can run on consumer-grade GPUs, generation speeds vary significantly. However, efficiency can be drastically improved through techniques like quantization and acceleration nodes.
Confirmed
- Performance Data: Generating a 15-second video takes about 11 minutes on an RTX 5080 (0.4MP, 10 steps); a 5-second 1080p video takes around 40 minutes on an RTX 4060Ti; a 5-second video takes about 5 minutes on an RTX 4070 Ti SUPER; a 10-second video takes roughly 10 minutes on an RTX 4090; and on the RTX PRO 6000, a 5-second 864×480 video takes just 50 seconds with around 40GB of VRAM usage.
- Optimization Effects: Enabling CUDA 13 and INT8 in ComfyUI can speed up generation by more than threefold; using Spectrum nodes on the RTX 3080 significantly boosts speed; applying INT8 quantization alongside the NVFP4 text encoder optimizes generation on the RTX 4090.
- Hardware Compatibility: The RTX 4070 can run it locally with stunning results; the RTX 5060Ti is capable of running Reference Video Generation (R2V).
Unconfirmed
- Specific workflow details (such as sampling steps and resolution) vary across different tests, so direct comparisons should be made with caution.
- The RTX 5060Ti is an unreleased GPU, meaning its performance data is strictly for reference.
Why It Matters
As an open-source video generation model, MiniMax H3's local runnability and optimization methods offer immense practical value for creators and developers. Community-led tests provide a clear performance reference across various hardware setups, helping users choose the right configurations based on their own equipment.
2026-08-04 ~ 2026-08-05 · 13 related posts
Primary sources
- Testing MiniMax H3: Running Reference-to-Video on RTX 5060Ti — whakahere · 2026-08-04
- Triple MiniMax H3 Speed in ComfyUI with CUDA 13 and INT8 — AI-imagine · 2026-08-04
- RTX 3080 Benchmark: Spectrum Nodes Significantly Accelerate MiniMax H3 Video Generation — Valuable_Issue_ · 2026-08-04
- [source] Testing MiniMax H3 on RTX 5080: 15-Second Video in 11 Minutes — FreeTheClanks · 2026-08-05
- 4090 Tested: Ultimate ComfyUI Setup for High-Speed Minimax H3 Video Generation — BigWideBaker · 2026-08-05
- [source] MiniMax H3 on RTX 4070 Ti SUPER: Generates 5-Second Video Clips in ~5 Minutes — EdenAlon · 2026-08-05
- MiniMax H3 Local Test: RTX PRO 6000 Outperforms B300 by Almost Half in Inference Time — Resident_Sympathy_60 · 2026-08-05
- MiniMax H3 Local Test: 5-Second Video in 50s on 96GB RTX PRO 6000 — Practical_Low29 · 2026-08-05
- Running MiniMax H3 Locally on RTX 4070 with SageAttention Acceleration — scooglecops · 2026-08-05
- Running Minimax H3 Video Generation Locally on RTX 4070: Stunning Results — Athem · 2026-08-05
- MiniMax H3 in ComfyUI: Generates 10s Video in 10 Mins on a 4090 — wjc_5 · 2026-08-05
- Benchmarking MiniMax H3 on RTX 5090: Efficiency vs. Pixel Workload — Forward-Parsley-148 · 2026-08-05
1 near-duplicate retellings: nortonanand