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RTX 3070 Ti 8GB for MiniMax H3: Speed, VRAM & Recommended Setup
| Size (16:9) | 5s | 8s | 10s | 15s |
|---|---|---|---|---|
| 416 × 256 0.1MP · flicker-prone | 1 min 34 s VRAM 7G | 1 min 52 s VRAM 7G | 2 min 5 s VRAM 7G | 2 min 39 s VRAM 7G |
| 864 × 480 0.4MP | 3 min 10 s VRAM 7G | 4 min 45 s VRAM 7G | 6 min 9 s VRAM 7G | 10 min 35 s VRAM 7G |
| 960 × 544 0.5MP | 3 min 49 s VRAM 7G | 6 min 12 s VRAM 7G | 8 min 16 s VRAM 7G | 15 min 5 s VRAM 7G |
| 1152 × 640 0.7MP | 5 min 23 s VRAM 7G | 9 min 49 s VRAM 7G | 13 min 43 s VRAM 7G | 27 min 25 s VRAM 7G |
| 1344 × 768 1.0MP · official max | 8 min 14 s VRAM 7G | 16 min 33 s VRAM 7G | 24 min 16 s VRAM 7G | 52 min 56 s VRAM 7G |
| 1376 × 768 1.0MP · above native | 8 min 30 s VRAM 7G | 17 min 13 s VRAM 7G | 25 min 19 s VRAM 7G | 55 min 34 s VRAM 7G |
| 1920 × 1088 2.0MP · above native | 25 min 21 s VRAM 7G | 1.0 h VRAM 7G | ✕ 1.7 h VRAM 7G | ✕ 4.4 h VRAM 7G |
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 · 8s at ~1.0 h per clip. 2 high-end combinations are not recommended (pagefile pressure or >90 min per clip) — see the ✕ marks below. For comfortable 768p: add RAM to 64GB, or move to a card with 16GB+.
Recommended combo (Starter tier (8-10GB VRAM))
- Main model: MiniMax-H3-FL2VA-Pruned-Q3_K_M.gguf（8.9GB）
- 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--disable-mmap--lowvram
480-540p 5s; 4-8 steps; 3-10 min per clip; start at 736x416
FAQ
Can the RTX 3070 Ti 8GB run MiniMax H3?
Yes. Estimated with 32GB RAM + fast-disk: 1920×1088·8s at ~1.0 h per clip. Configs that exceed VRAM fall back to weight offloading (slower, but they still render).
How fast is H3 on the RTX 3070 Ti 8GB?
About 1.0 h per 1920×1088·8s clip (including model load and encoding). Longer or denser clips scale quadratically in the attention term.
How much RAM do I need?
At least 32GB of system RAM recommended (minimum 16GB plus a 48GB 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.
→ Run the numbers for your RAM and budget in the calculator (RTX 3070 Ti 8GB pre-filled)
Same tier: RTX 3080 10GB · RTX 3080 12GB · RTX 3080 20GB (modded) · RTX 3080 Ti 12GB · RTX 4060 Ti 16GB · RTX 4070 12GB · RTX 4070 Super 12GB · RTX 4070 Ti 12GB
Related: Hardware guide · Acceleration compared · 8GB VRAM setups