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_269920_3 ( l2_cache__mb_ VARCHAR, model VARCHAR )

### Question ###
What's the L2 cache for the 7140N model?

### Accurate SQL ###

SELECT l2_cache__mb_ FROM table_269920_3 WHERE model = "7140N"