NL-2610.007Ongoing · Set up[nl.VI]
Which Wan video models run on an 8 GB card?
The Nook team
Opened 5 October 2026 · 2 min read
Nook's Video page runs Wan models through stable-diffusion.cpp, and now offers four text-to-video models: Wan 2.1 1.3B in 8 bits, and Wan 2.2 TI2V 5B, Wan 2.1 14B and Wan 2.2 A14B in 4 bits. Only Wan 2.1 1.3B has run on our RTX 4060 so far, at about five minutes for a two-second clip. The 5B model is listed as needing 8 GB, the 14B models 16 GB. We want to know what actually runs on 8 GB, how long a clip takes, how much video memory (VRAM) each model really uses, and where each one starts to spill out of it.
- Stage
- Set up
- Comments
- Only the 1.3B model timed so far. RTX 4060 8 GB; stable-diffusion.cpp master-841-6b3edaa.
- Subjects
- Images and video (nl.VI); Memory (nl.MM)
- Cite as
NL-2610.007· usenook.ai/labs/wan-video-on-8-gb.html
Full text
The question
Which open video models can someone with an 8 GB graphics card actually use, and what does each one cost them in time? Model pages list a minimum, but a minimum says nothing about how long a clip takes, or what happens a little below it.
The models
| Model | File | Listed need | On our card |
|---|---|---|---|
| Wan 2.1 T2V 1.3B | Q8_0; 832 × 480 at 16 fps; the text encoder runs on the processor | Fits 8 GB | Runs: about 5 min for a 2 s clip |
| Wan 2.2 TI2V 5B | Q4_K_M, with the Wan 2.2 VAE; 832 × 480, 49 frames at 24 fps | 8 GB | Not yet run |
| Wan 2.1 T2V 14B | Q4_K_M | 16 GB | Not yet run |
| Wan 2.2 T2V A14B | Q4_K_M, a low-noise and a high-noise model; 10 steps plus 8 high-noise steps, CFG 3.5 | 16 GB | Not yet run |
Each model also needs the umt5 text encoder, 4.1 GB, which Nook currently downloads once per model.
The plan
- Close everything else that uses the card, and record the free memory before each run (NL-2610.004 shows why).
- Run each model on the same three prompts at its default size, length and steps.
- Record the time per clip, peak dedicated memory and peak shared memory, so a spill shows (NL-2610.002).
- Run the 14B models on the 8 GB card anyway, to see whether they finish at all once they spill, and how slowly.
- Publish the clips beside the numbers, so the quality can be judged too.
So far
- All four models are in Nook's catalogue, with sizes and checksums, and marked against the card with the half-gigabyte allowance from NL-2610.004.
- Wan 2.1 1.3B runs on the RTX 4060, with its text encoder on the processor: a two-second clip at 832 × 480 takes about five minutes. The other three have not been run on a graphics card yet.
This entry will be revised as the runs come in, and becomes a result when they are done.