Can AMD Radeon RX 7700 XT run CogVideoX-5B?

5B parameter Video Gen model on 12GB GDDR6

Yes — runs at 8-bit quantization

~0.2-0.2 clips/min

SpeedFast inference, near-native speed

QualityNear-lossless — virtually identical to FP16

CogVideoX-5B works best with NVIDIA CUDA. Your AMD GPU may have limited or no support.

VRAM Requirements

CogVideoX-5B is a 5B parameter model. At full precision (FP16), it requires 18GB of VRAM. Your AMD Radeon RX 7700 XT has 12GB, so you'll need to quantize it to 8-bit (Q8) to fit.

FP16 (Full Precision)18GB (need 6GB more)

Maximum quality, no quantization

Q8 (8-bit)10GB (2GB free)

Near-lossless, ~50% size reduction

Q4 (4-bit)7GB (5GB free)

Good quality, ~75% size reduction

Your GPU VRAM: 12GB GDDR6 at 432 GB/s bandwidth
Recommended system RAM: 32GB DDR5 (2x GPU VRAM minimum for model overflow)

What This Means in Practice

CogVideoX-5B at 8-bit precision on AMD Radeon RX 7700 XT 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.

AMD Radeon RX 7700 XT Specs

VRAM12GB GDDR6

Memory Bandwidth432 GB/s

TDP245W

CUDA CoresN/A

Street Price~$380

AI Rating2/10

Other GPUs That Run CogVideoX-5B

NVIDIA GeForce RTX 3060 Ti8GBQ4

$220

NVIDIA GeForce RTX 3060 12GB12GBQ8

$230

NVIDIA GeForce RTX 30708GBQ4

$250

NVIDIA GeForce RTX 40608GBQ4

$280

NVIDIA Tesla P4024GBFP16

$300

NVIDIA GeForce RTX 3070 Ti8GBQ4

$300

About CogVideoX-5B

Tsinghua's open video generation model. Generates 6-second clips at 720p. More accessible VRAM requirements than larger video models. Good starting point for video gen experiments.

Category: Video Gen · Parameters: 5B · CUDA required: Recommended