6 GB of available space for installation, plus extra for disk cache. Optimizing Performance
While the minimum VRAM is 2GB, After Effects relies heavily on the GPU for the "Metal" (Mac) or "CUDA/OpenCL" (Windows) acceleration. If you are working with 4K footage or heavy effects (like Lumetri Scopes), a card with 4GB or 6GB of VRAM is the practical minimum to avoid "Out of Memory" errors. after effects cc 2020 system requirements
After Effects CC 2020 is a 64-bit application that relies heavily on , a fast CPU (clock speed over core count), and a fast SSD . It does not heavily depend on a high-end GPU for basic tasks, but a good GPU accelerates specific effects and rendering (via CUDA or Metal). 6 GB of available space for installation, plus