Buffering techniques for power management are described. A method may comprise modifying a power state for a communications sub-system and a computing sub-system from a higher power state to a lower power state, storing packets of information in a buffer for the communications sub-system during a communications idle duration period, generating a variable receive threshold value for the buffer, and transferring the stored packets of information from the buffer to the computing sub-system based on a variable receive threshold value. Other embodiments are described and claimed.