Table schema:
CREATE TABLE table_name_69 (clock_multiplier VARCHAR, clock_speed VARCHAR, model_number VARCHAR)

Question: Which Clock Multiplier has a Clock Speed of 1.6 ghz, and a Model Number of c7-m 764?
SQL: SELECT clock_multiplier FROM table_name_69 WHERE clock_speed = "1.6 ghz" AND model_number = "c7-m 764"