For a quick bring-up and implementation, take a look at this repo: https://github.com/Pelochus/ezrknpu
I have a Radxa Rock 5C (on Armbian) and it runs various models rather well. Trying to convert models is kind of a pain, though, so watch out.
Also: recent Geekbench should have NN tests: have you found dedicated comparison pages, and is which processor (C/G/NPU) is used clear?
For a quick bring-up and implementation, take a look at this repo: https://github.com/Pelochus/ezrknpu
I have a Radxa Rock 5C (on Armbian) and it runs various models rather well. Trying to convert models is kind of a pain, though, so watch out.