HunyuanVideo (13B, original) on 32 GB of VRAM
Yes, but only just: 16-bit leaves 2.1 GB free on 32 GB. The original 13B HunyuanVideo from December 2024. Largely replaced by the lighter HunyuanVideo 1.5, but still widely used with its LoRAs.
Runs well
Yes.
Take 16-bit (25.6 GB). In use it comes to about 29.9 GB, with 2.1 GB left over on 32 GB.
Best file16-bit
File size25.6 GB
VRAM needed~29.9 GB
System RAM48 GB+
Memory map · 32 GB GPU29.9 GB / 32 GB
016 GB32 GB
Weights 16-bit · 25.6 GBWorking memory · 3.5 GBReserve · 0.8 GBFree · 2.1 GB
calculated How this is counted.
01What to download
| Part | File | Folder | Size | |
|---|---|---|---|---|
| Model | hunyuan_video_t2v_720p_bf16.safetensors 16-bit · Comfy-Org/HunyuanVideo_repackaged | models/diffusion_models | 25.6 GB | Download → |
| Text encoder | llava_llama3_fp8_scaled.safetensors LLaVA-Llama3 FP8 (scaled) · Comfy-Org/HunyuanVideo_repackaged | models/text_encoders | 9.1 GB | Download → |
| Text encoder | clip_l.safetensors CLIP-L · Comfy-Org/HunyuanVideo_repackaged | models/text_encoders | 0.2 GB | Download → |
| VAE | hunyuan_video_vae_bf16.safetensors HunyuanVideo VAE BF16 · Comfy-Org/HunyuanVideo_repackaged | models/vae | 0.5 GB | Download → |
| Total download · keep about the same free on disk | 35.5 GB | |||
Alternatives: LLaVA-Llama3 FP16 (16.1 GB). Only for some workflows: LLaVA-Llama3 vision (0.6 GB, I2V only). Sizes from Hugging Face, 2026-10-01.
System RAM: 48 GB or more. These files take about 35.5 GB of RAM while loaded, 41.5 GB with Windows and ComfyUI. What happens with less. calculated
02Every file, on 32 GB
| File | Size | Needed | On this card | Quality | Download |
|---|---|---|---|---|---|
| 16-bit ← SAFETENSORS · Comfy-Org | 25.6 GB | 29.9 GB | fits · 2.1 GB spare | the original weights | Hugging Face → |
| Q8_0 GGUF · city96 | 14.0 GB | 18.3 GB | fits · 13.7 GB spare | practically identical to the original | Hugging Face → |
| FP8 SAFETENSORS · Kijai | 13.2 GB | 17.5 GB | fits · 14.5 GB spare | practically identical to the original | Hugging Face → |
| Q6_K GGUF · city96 | 11.0 GB | 15.3 GB | fits · 16.7 GB spare | very close to the original | Hugging Face → |
| Q5_K_M GGUF · city96 | 9.4 GB | 13.7 GB | fits · 18.3 GB spare | close; small differences in fine detail | Hugging Face → |
| Q4_K_M GGUF · city96 | 7.9 GB | 12.2 GB | fits · 19.8 GB spare | good; some loss in fine detail and text | Hugging Face → |
| Q3_K_M GGUF · city96 | 6.2 GB | 10.5 GB | fits · 21.5 GB spare | noticeable loss of detail | Hugging Face → |
“Needed” adds 3.5 GB of working memory for HunyuanVideo 13B and a 0.8 GB reserve. Sizes 2026-10-01.