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_12740151_8 (clock_speed VARCHAR, price___usd__ VARCHAR)

### Question ###
What's the clock speed of the model that costs $910?

### Accurate SQL ###

SELECT clock_speed FROM table_12740151_8 WHERE price___usd__ = "$910"