HunyuanVideo VRAM Requirements
HunyuanVideo needs about 18.3 GB of VRAM with FP8 weights at 1280×720 and 129 frames, loading one model at a time. In FP16 it needs 30.5 GB (46.0 GB with everything loaded), and GGUF Q4 brings it to 13.1 GB. The smallest consumer GPU that runs it is the RTX 4060 Ti 16GB with Q4 weights, or the Radeon RX 7900 XT 20GB in FP8.
18.3 GB peak VRAM
HunyuanVideo at 1280×720, 129 frames with FP8 weights, loading one model at a time (ComfyUI default on smaller cards). Keeping everything loaded needs 26.4 GB.
- Diffusion model 12.1 GB
- Text encoders 7.6 GB
- VAE 0.5 GB
- Peak activations 5.4 GB
- Overhead 0.8 GB
GPU fit
- RTX 4060 8GB41% on GPU
- RTX 3060 12GB61% on GPU
- RTX 4060 Ti 16GB82% on GPU
- RTX 4090 24GBFitswith swapping
- RTX 5090 32GBFitsall loaded
- RTX 6000 Ada 48GBFitsall loaded
- RTX PRO 6000 Blackwell 96GBFitsall loaded
- Apple M4 Max 128GBFitsall loaded
HunyuanVideo VRAM by precision
At 1280×720, 129 frames, tiled VAE. Text encoders in FP8 except for the FP16 row.
| Weights | Diffusion model | Peak (swapping) | All loaded | Smallest tier |
|---|---|---|---|---|
| FP16 / BF16 | 24.2 GB | 30.5 GB | 46.0 GB | 48 GB |
| FP8 | 12.1 GB | 18.3 GB | 26.4 GB | 20 GB |
| GGUF Q8_0 | 12.9 GB | 19.1 GB | 27.1 GB | 24 GB |
| GGUF Q5_K_S | 8.4 GB | 14.6 GB | 22.6 GB | 16 GB |
| GGUF Q4_K_S / NF4 | 6.9 GB | 13.1 GB | 21.2 GB | 16 GB |
VRAM by resolution
FP8 weights, with model swapping.
| Resolution | Latent tokens | Activations | Peak VRAM |
|---|---|---|---|
| 832×480, 129 frames | 51,480 | 2.4 GB | 15.3 GB |
| 1280×720, 129 frames | 118,800 | 5.4 GB | 18.3 GB |
About HunyuanVideo
A 13B video model with an 8B LLM as its text encoder. Tencent's reference implementation lists about 60 GB for 720p at 129 frames; community FP8 and GGUF versions with swapping bring it to 16 to 24 GB cards at lower resolution or fewer frames.
| Component | Size |
|---|---|
| Diffusion model | 13B parameters (Diffusion transformer) |
| Text encoders | LLaVA-Llama-3 8B (8B), CLIP ViT-L (0.123B) |
| VAE | 0.25B parameters |
| Classifier-free guidance | Distilled (1 pass per step) |
| Released | 2024-12 |
| License | Tencent Hunyuan Community License |
HunyuanVideo VRAM: common questions
Why does HunyuanVideo need so much memory?
129 frames at 720p is about 119,000 latent tokens, and the 13B transformer processes them all at once. Fewer frames or a lower resolution cut activation memory proportionally.
How much VRAM does HunyuanVideo need?
At its default 1280×720 and 129 frames: about 30.5 GB in FP16 with model swapping (46.0 GB with everything loaded), 18.3 GB in FP8 and 13.1 GB with GGUF Q4 weights.