xformers

[NevSNev]

When we load the SDXL, I want to know if the Xformers works. I didn't find Xformer in requirement.txt

[Speedbird]

Just to add on, I am also getting an error when I try to generate image:
no module 'xformers'. Processing without...
When I install xformers manually, the script is not working and told me that my GPU driver is too old.

Any idea for the above problem? Thanks!