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RTX 3080 Ti 12GB for MiniMax H3: Speed, VRAM & Recommended Setup
| Size (16:9) | 5s | 8s | 10s | 15s |
|---|---|---|---|---|
| 416 × 256 0.1MP · flicker-prone | 59 s VRAM 11G | 1 min 4 s VRAM 11G | 1 min 9 s VRAM 11G | 1 min 23 s VRAM 11G |
| 864 × 480 0.4MP | 1 min 35 s VRAM 11G | 2 min 11 s VRAM 11G | ⚠ 2 min 41 s VRAM 11G | ⚠ 4 min 10 s VRAM 11G |
| 960 × 544 0.5MP | 1 min 50 s VRAM 11G | ⚠ 2 min 42 s VRAM 11G | ⚠ 3 min 24 s VRAM 11G | ⚠ 5 min 36 s VRAM 11G |
| 1152 × 640 0.7MP | ⚠ 2 min 25 s VRAM 11G | ⚠ 3 min 55 s VRAM 11G | ⚠ 5 min 10 s VRAM 11G | ⚠ 9 min 19 s VRAM 11G |
| 1344 × 768 1.0MP · official max | ⚠ 3 min 23 s VRAM 11G | ⚠ 6 min 3 s VRAM 11G | ⚠ 8 min 23 s VRAM 11G | ⚠ 16 min 41 s VRAM 11G |
| 1376 × 768 1.0MP · above native | ⚠ 3 min 29 s VRAM 11G | ⚠ 6 min 15 s VRAM 11G | ⚠ 8 min 42 s VRAM 11G | ⚠ 17 min 26 s VRAM 11G |
| 1920 × 1088 2.0MP · above native | ⚠ 8 min 42 s VRAM 11G | ⚠ 19 min 30 s VRAM 11G | ⚠ 30 min 17 s VRAM 11G | ⚠ 1.2 h VRAM 11G |
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 864 × 480 · 8s at ~2 min 11 s per clip. For comfortable 768p: add RAM to 64GB, or move to a card with 16GB+.
Recommended combo (Balanced tier (12-16GB 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 4-step v1.1 768p · ~3.44× sampling
- Launch flags:
--fast-disk
540p-768p 5s; 4-8 steps; 1.5-6 min per clip
FAQ
Can the RTX 3080 Ti 12GB run MiniMax H3?
Yes. Estimated with 32GB RAM + fast-disk: 864×480·8s at ~2 min 11 s per clip. Configs that exceed VRAM fall back to weight offloading (slower, but they still render).
How fast is H3 on the RTX 3080 Ti 12GB?
About 2 min 11 s per 864×480·8s 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 32GB 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 3080 Ti 12GB pre-filled)
Same tier: RTX 3070 Ti 8GB · RTX 3080 10GB · RTX 3080 12GB · RTX 3080 20GB (modded) · RTX 4060 Ti 16GB · RTX 4070 12GB · RTX 4070 Super 12GB · RTX 4070 Ti 12GB
Related: Hardware guide · Acceleration compared · 8GB VRAM setups