MiniMax H3 I2VA: RTX5090 vs RTX3090 vs R9700 vs RX7900XT vs RTX3060

Community benchmark of MiniMax H3 I2VA generation at 544x800 (5s, 20 steps, seed 42) comparing RTX5090, RTX3090, R9700, RX7900XT, and RTX3060. Runs used the fl2va pruned int8convrot model with no custom-node optimizations, measured on the second generation to exclude cold-start overhead.