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_21013 ( "Model number" text, "sSpec number" text, "Frequency" text, "GPU frequency" text, "L2 cache" text, "I/O bus" text, "Memory" text, "Voltage" text, "TDP" text, "Socket" text, "Release date" text, "Part number(s)" text, "Release price ( USD )" text )

### Question ###
For a release price of $72, what is the TDP of the microprocessor?

### Accurate SQL ###

SELECT "TDP" FROM table_21013 WHERE "Release price ( USD )" = '$72'