Turbo SDXL running on CPU. It generates a 640x640 image in about 17 seconds. It needs 16GB of RAM and the Windows Swap File to be set to 16GB or more. Higher resolution images produce annoying overlapping duplicates for some buggy reason. To run Comfyui in CPU mode use the following command line inside a .bat file.

python main.py --cpu --preview-method auto --use-split-cross-attention --auto-launch