Wan 2.1 T2V 14B on 24 GB of VRAM
Yes. Q8_0 fits on 24 GB with 3.8 GB to spare. Alibaba's 14B text-to-video model. Figures assume a short clip at 480p; higher resolution and more frames need more memory.
Runs well
Yes.
Take Q8_0 (15.9 GB). In use it comes to about 20.2 GB, with 3.8 GB left over on 24 GB.
Best fileQ8_0
File size15.9 GB
VRAM needed~20.2 GB
System RAM32 GB+
Memory map · 24 GB GPU20.2 GB / 24 GB
012 GB24 GB
Weights Q8_0 · 15.9 GBWorking memory · 3.5 GBReserve · 0.8 GBFree · 3.8 GB
calculated How this is counted.
Got an RTX 40 or 50? Swap Q8_0 for FP8 (14.3 GB): same quality class, computed natively there.
01What to download
| Part | File | Folder | Size | |
|---|---|---|---|---|
| Model | wan2.1-t2v-14b-Q8_0.gguf Q8_0 · city96/Wan2.1-T2V-14B-gguf | models/unet | 15.9 GB | Download → |
| Text encoder | umt5_xxl_fp8_e4m3fn_scaled.safetensors UMT5-XXL FP8 (scaled) · Comfy-Org/Wan_2.1_ComfyUI_repackaged | models/text_encoders | 6.7 GB | Download → |
| VAE | wan_2.1_vae.safetensors Wan 2.1 VAE · Comfy-Org/Wan_2.1_ComfyUI_repackaged | models/vae | 0.3 GB | Download → |
| Total download · keep about the same free on disk | 22.9 GB | |||
Alternatives: UMT5-XXL FP16 (11.4 GB). Sizes from Hugging Face, 2026-10-01.
02Every file, on 24 GB
| File | Size | Needed | On this card | Quality | Download |
|---|---|---|---|---|---|
| 16-bit SAFETENSORS · Comfy-Org | 28.6 GB | 32.9 GB | 8.9 GB too big | the original weights | Hugging Face → |
| Q8_0 ← GGUF · city96 | 15.9 GB | 20.2 GB | fits · 3.8 GB spare | practically identical to the original | Hugging Face → |
| FP8 SAFETENSORS · Comfy-Org | 14.3 GB | 18.6 GB | fits · 5.4 GB spare | practically identical to the original | Hugging Face → |
| Q6_K GGUF · city96 | 12.5 GB | 16.8 GB | fits · 7.2 GB spare | very close to the original | Hugging Face → |
| Q5_K_M GGUF · city96 | 11.3 GB | 15.6 GB | fits · 8.4 GB spare | close; small differences in fine detail | Hugging Face → |
| Q4_K_M GGUF · city96 | 10.1 GB | 14.4 GB | fits · 9.6 GB spare | good; some loss in fine detail and text | Hugging Face → |
| Q3_K_M GGUF · city96 | 7.6 GB | 11.9 GB | fits · 12.1 GB spare | noticeable loss of detail | Hugging Face → |
“Needed” adds 3.5 GB of working memory for Wan 2.1 14B and a 0.8 GB reserve. Sizes 2026-10-01.