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RTX 4080 Super 32GB (modded) for MiniMax H3: Speed, VRAM & Recommended Setup
| Size (16:9) | 5s | 8s | 10s | 15s |
|---|---|---|---|---|
| 416 × 256 0.1MP · flicker-prone | 59 s VRAM 23G | 1 min 8 s VRAM 24G | 1 min 14 s VRAM 24G | 1 min 32 s VRAM 24G |
| 864 × 480 0.4MP | 1 min 48 s VRAM 25G | 2 min 36 s VRAM 26G | 3 min 17 s VRAM 27G | 5 min 28 s VRAM 29G |
| 960 × 544 0.5MP | 2 min 8 s VRAM 25G | 3 min 19 s VRAM 27G | 4 min 20 s VRAM 28G | 7 min 39 s VRAM 30G |
| 1152 × 640 0.7MP | 2 min 55 s VRAM 26G | 5 min 5 s VRAM 29G | 6 min 59 s VRAM 30G | 13 min 34 s VRAM 31G |
| 1344 × 768 1.0MP · official max | 4 min 19 s VRAM 28G | 8 min 21 s VRAM 31G | 12 min 4 s VRAM 31G | 25 min 44 s VRAM 31G |
| 1376 × 768 1.0MP · above native | 4 min 27 s VRAM 28G | 8 min 40 s VRAM 31G | 12 min 34 s VRAM 31G | 27 min VRAM 31G |
| 1920 × 1088 2.0MP · above native | 12 min 35 s VRAM 31G | 30 min 30 s VRAM 31G | 48 min 54 s VRAM 31G | ✕ 2.1 h VRAM 31G |
Times are per whole clip (model load and text encoding included); the first run is slower due to kernel compilation. ⚠ = weight offloading / noticeably slower; ✕ = not recommended.
Reading the numbers
With the recommended combo, the green (no disk spill) ceiling is 1920 × 1088 · 10s at ~48 min 54 s per clip. 1 high-end combinations are not recommended (pagefile pressure or >90 min per clip) — see the ✕ marks below. Already top-tier: stack 4–8 step distillation with Sage/Kitchen attention; for very long clips try SLA / VSA sparse attention.
Recommended combo (Flagship tier (32GB+ VRAM))
- Main model: minimax_h3_fl2va_pruned_int8_convrot.safetensors（20.97GB）
- Text encoder: qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors（15.69GB）
- Acceleration: LightX2V Turbo 8-step v1.0 · ~2.08× sampling
- Launch flags:
--fast-disk
1344x768 full length 5-15s; 4-8 steps; ~80s end-to-end for a 3s clip (measured on our 5090)
FAQ
Can the RTX 4080 Super 32GB (modded) run MiniMax H3?
Yes. Estimated with 32GB RAM + fast-disk: 1920×1088·10s at ~48 min 54 s per clip. Configs that exceed VRAM fall back to weight offloading (slower, but they still render).
How fast is H3 on the RTX 4080 Super 32GB (modded)?
About 48 min 54 s per 1920×1088·10s clip (including model load and encoding). Longer or denser clips scale quadratically in the attention term.
How much RAM do I need?
At least 64GB of system RAM recommended (minimum 48GB plus a 16GB pagefile). With 32GB, always enable --fast-disk or weights spill into the pagefile.
How can I make it faster?
Stack step distillation (e.g. LightX2V Turbo 8-step v1.0), enable SageAttention / Kitchen attention; for long clips try SLA / VSA sparse attention. All of it is switchable in step 2 of the calculator.
Same tier: RTX 3090 24GB · RTX 4070 Ti Super 16GB · RTX 4080 16GB · RTX 4080 32GB (modded) · RTX 4080 Super 16GB · RTX 4090 24GB · RTX 4090 D 24GB · RTX 4090 48GB (modded)
Related: Hardware guide · Acceleration compared · 8GB VRAM setups