GPUs/NVIDIA RTX 4000 Ada/Wan Video 14B

Can NVIDIA RTX 4000 Ada run Wan Video 14B?

14B parameter Video Gen model on 20GB GDDR6

Yes — runs at 8-bit quantization
~0.1-0.2 clips/min
SpeedFast inference, near-native speed
QualityNear-lossless — virtually identical to FP16

VRAM Requirements

Wan Video 14B is a 14B parameter model. At full precision (FP16), it requires 32GB of VRAM. Your NVIDIA RTX 4000 Ada has 20GB, so you'll need to quantize it to 8-bit (Q8) to fit.

FP16 (Full Precision)32GB (need 12GB more)

Maximum quality, no quantization

Q8 (8-bit)18GB (2GB free)

Near-lossless, ~50% size reduction

Q4 (4-bit)11GB (9GB free)

Good quality, ~75% size reduction

Your GPU VRAM: 20GB GDDR6 at 360 GB/s bandwidth
Recommended system RAM: 40GB DDR5 (2x GPU VRAM minimum for model overflow)

What This Means in Practice

Wan Video 14B at 8-bit precision on NVIDIA RTX 4000 Ada generates video clips with near-identical quality to full precision. Generation times are similar — video gen is bottlenecked by compute more than memory at this precision. A solid setup for local video generation.

NVIDIA RTX 4000 Ada Specs

VRAM20GB GDDR6
Memory Bandwidth360 GB/s
TDP130W
CUDA Cores6,144
Street Price~$1100
AI Rating7/10

Other GPUs That Run Wan Video 14B

NVIDIA GeForce RTX 3060 Ti8GBoffload
$220
NVIDIA GeForce RTX 3060 12GB12GBQ4
$230
NVIDIA GeForce RTX 30708GBoffload
$250
NVIDIA GeForce RTX 40608GBoffload
$280
NVIDIA Tesla P4024GBQ8
$300
NVIDIA GeForce RTX 3070 Ti8GBoffload
$300

Other Video Gen Models on NVIDIA RTX 4000 Ada

CogVideoX-5B5BFP16
7GB Q4
LTX Video2BFP16
4GB Q4
Stable Video Diffusion1.5BFP16
3.5GB Q4
Mochi 110BQ8
10GB Q4

About Wan Video 14B

Alibaba's latest text-to-video model. High quality output with good prompt following. Competitive with commercial video generators. Needs 16GB+ VRAM for practical use.

Category: Video Gen · Parameters: 14B · CUDA required: Recommended
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