The processor in each Compute Stick is soldered down; it is not upgradeable.
This message was posted on behalf of Intel Corporation
Thank you very much to N.Scott.Pearson for the information provided previously.
I just wanted to confirm the information above as correct, the processor cannot be replaced because it is embedded on the stick, that is why a list of compatible processors is not available.
Any further questions or if you need more information, please let me know.