Can NVIDIA GeForce RTX 3090 Ti run HunyuanVideo?
13B parameter Video Gen model on 24GB GDDR6X
VRAM Requirements
HunyuanVideo is a 13B parameter model. At full precision (FP16), it requires 40GB of VRAM. Your NVIDIA GeForce RTX 3090 Ti has 24GB, so you'll need to quantize it to 8-bit (Q8) to fit.
Maximum quality, no quantization
Near-lossless, ~50% size reduction
Good quality, ~75% size reduction
Recommended system RAM: 48GB DDR5 (2x GPU VRAM minimum for model overflow)
What This Means in Practice
HunyuanVideo at 8-bit precision on NVIDIA GeForce RTX 3090 Ti 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 GeForce RTX 3090 Ti Specs
Other GPUs That Run HunyuanVideo
Other Video Gen Models on NVIDIA GeForce RTX 3090 Ti
About HunyuanVideo
Tencent's text-to-video model. Generates high-quality 5-10 second video clips. One of the best open-source video generators available. Needs significant VRAM — 24GB+ recommended.