CREATE TABLE table_name_52 (part_number_s_ VARCHAR(255), turbo VARCHAR(255), frequency VARCHAR(255))
what is the part number(s) when the turbo is 9/11 and the frequency is 1.5 ghz?
    
SQL: SELECT part_number_s_ FROM table_name_52 WHERE turbo = "9/11" AND frequency = "1.5 ghz"