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_name_63 ( clock_speed VARCHAR, fsb_speed VARCHAR, model_number VARCHAR )

### Question ###
Which Clock Speed has a FSB Speed of 400 mhz, and a Model Number of c7-m 794?

### Accurate SQL ###

SELECT clock_speed FROM table_name_63 WHERE fsb_speed = "400 mhz" AND model_number = "c7-m 794"