Can NVIDIA GeForce RTX 4090 run LTX Video?
2B parameter Video Gen model on 24GB GDDR6X
VRAM Requirements
LTX Video is a 2B parameter model. At full precision (FP16), it requires 10GB of VRAM. Your NVIDIA GeForce RTX 4090 has 24GB — enough to run it without any quantization.
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
NVIDIA GeForce RTX 4090 can run LTX Video at full precision for video generation. You can generate short video clips from text prompts or images at maximum quality. Video generation is very compute-intensive — expect each clip to take 30 seconds to several minutes depending on resolution and length.
NVIDIA GeForce RTX 4090 Specs
Other GPUs That Run LTX Video
Other Video Gen Models on NVIDIA GeForce RTX 4090
About LTX Video
Lightricks' lightweight video generation model. Fast and efficient — the easiest video gen model to run locally. Generates 5-second clips. Quality is lower than larger models but runs on 8GB GPUs.