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_11 (fsb VARCHAR, model_number VARCHAR)

### Question ###
Name the fsb for atom z540

### Accurate SQL ###

SELECT fsb FROM table_16729930_11 WHERE model_number = "Atom Z540"