Table schema:
CREATE TABLE table_name_4 (frequency VARCHAR, part_number_s_ VARCHAR, i_o_bus VARCHAR, voltage VARCHAR)

Question: What is the frequency for I/O bus of DMI, voltage of 0.725–1.4v and part cn80617004458ab?
SQL: SELECT frequency FROM table_name_4 WHERE i_o_bus = "dmi" AND voltage = "0.725–1.4v" AND part_number_s_ = "cn80617004458ab"