I do not know if the current w11 nvidia driver really support this gpu or if w11 is just using a generic one to make do with it
I know for a fact that nvidia stopped support for 700 series in linux a few years ago.
PS :
The nvidia search page here seems to suggest that 400 series do not have official support past windows 7
latest driver with 400 family support being
GeForce Game Ready Driver WHQL** 391.35 March 27, 2018 for windows 7
Without being a windows user nor expert … I’d say your chance of getting opencl support with this gpu on w11 are rather slim.