Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_16729930_18 (socket VARCHAR, frequency VARCHAR)

### Question ###
What is the socket for microprocessors with a frequency of 1.3 ghz?

### Accurate SQL ###

SELECT socket FROM table_16729930_18 WHERE frequency = "1.3 GHz"