Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_16729930_18 (socket VARCHAR, frequency VARCHAR)
### Question:
What is the socket for microprocessors with a frequency of 1.3 ghz?
### Answer:
SELECT socket FROM table_16729930_18 WHERE frequency = "1.3 GHz"