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_19203 ( "Designation" text, "Bus width (bits)" real, "Channels" text, "Clock rate (MHz)" real, "Bandwidth (MB/s)" real )

### Question ###
Name the least clock rate mhz

### Accurate SQL ###

SELECT MIN("Clock rate (MHz)") FROM table_19203