RTX 5090 Struggles with MiniMax H3 Local Inference

Developers testing MiniMax H3 locally on RTX 5090 PCs found that while text- and image-to-video are acceptable, 1080p generation hits severe VRAM and ComfyUI bottlenecks, causing generation times to surge to 20 minutes.

2026-08-08 ~ 2026-08-09 · 2 related posts

• Running Minimax H3 1080p Locally on RTX 5090 Fails: ComfyUI & VRAM Bottlenecks — jingtianli · 2026-08-08
• Running MiniMax H3 on RTX 5090: Video-to-Video Generation Takes 20 Minutes — Chaztle · 2026-08-09