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RTX 4070 Ti Super 16GB for MiniMax H3: Speed, VRAM & Recommended Setup
| Size (16:9) | 5s | 8s | 10s | 15s |
|---|---|---|---|---|
| 416 × 256 0.1MP · flicker-prone | 52 s VRAM 15G | 59 s VRAM 15G | 1 min 4 s VRAM 15G | 1 min 17 s VRAM 15G |
| 864 × 480 0.4MP | 1 min 29 s VRAM 15G | 2 min 4 s VRAM 15G | 2 min 32 s VRAM 15G | 3 min 55 s VRAM 15G |
| 960 × 544 0.5MP | 1 min 44 s VRAM 15G | 2 min 33 s VRAM 15G | 3 min 13 s VRAM 15G | 5 min 15 s VRAM 15G |
| 1152 × 640 0.7MP | 2 min 17 s VRAM 15G | 3 min 42 s VRAM 15G | 4 min 51 s VRAM 15G | 8 min 41 s VRAM 15G |
| 1344 × 768 1.0MP · official max | 3 min 12 s VRAM 15G | 5 min 40 s VRAM 15G | 7 min 49 s VRAM 15G | 15 min 23 s VRAM 15G |
| 1376 × 768 1.0MP · above native | 3 min 17 s VRAM 15G | 5 min 51 s VRAM 15G | 8 min 6 s VRAM 15G | 16 min 3 s VRAM 15G |
| 1920 × 1088 2.0MP · above native | 8 min 6 s VRAM 15G | 17 min 56 s VRAM 15G | 27 min 40 s VRAM 15G | 1.1 h VRAM 15G |
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 · 15s at ~1.1 h per clip. To unlock 2.0MP and full durations: step up to a 32GB card (e.g. 5090), or use a smaller quant (GGUF Q3/Q4).
Recommended combo (Blackwell-specific (50-series 16GB+))
- Main model: MiniMax-H3_FL2VA-NVFP4-HQ.safetensors（DmitryDB）（14.6GB）
- Text encoder: qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors（15.69GB）
- Acceleration: LightX2V Turbo 4-step v1.1 768p · ~3.44× sampling
- Launch flags:
--fast-disk
768p 5s; 4-8 steps; 1-5 min per clip
FAQ
Can the RTX 4070 Ti Super 16GB run MiniMax H3?
Yes. Estimated with 32GB RAM + fast-disk: 1920×1088·15s at ~1.1 h per clip. Configs that exceed VRAM fall back to weight offloading (slower, but they still render).
How fast is H3 on the RTX 4070 Ti Super 16GB?
About 1.1 h per 1920×1088·15s 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 32GB 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 4-step v1.1 768p), enable SageAttention / Kitchen attention; for long clips try SLA / VSA sparse attention. All of it is switchable in step 2 of the calculator.
→ Run the numbers for your RAM and budget in the calculator (RTX 4070 Ti Super 16GB pre-filled)
Same tier: RTX 3090 24GB · RTX 4080 16GB · RTX 4080 32GB (modded) · RTX 4080 Super 16GB · RTX 4080 Super 32GB (modded) · RTX 4090 24GB · RTX 4090 D 24GB · RTX 4090 48GB (modded)
Related: Hardware guide · Acceleration compared · 8GB VRAM setups