Table schema:
CREATE TABLE table_name_27 (gpu_frequency VARCHAR, release_date VARCHAR, sspec_number VARCHAR)

Question: What is the GPU frequency for the processor released in June 2013, with a sSpec number of sr17l(c0)?
SQL: SELECT gpu_frequency FROM table_name_27 WHERE release_date = "june 2013" AND sspec_number = "sr17l(c0)"