AI Upscaling Locally: Real-ESRGAN, SUPIR, and ComfyUI Workflows Compared
Real-ESRGAN runs on 4GB VRAM and upscales a photo in 5 seconds. SUPIR needs 12GB but generates detail that wasn't in the original. ComfyUI ties both into your gen pipeline. Free Topaz Gigapixel alternatives with VRAM tables and install commands.
Mar 1, 2026