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_27765443_2 (model___computer_name VARCHAR, cpu_type VARCHAR)

### Question ###
Name the total number of model for amd opteron dual-core 2.6ghz

### Accurate SQL ###

SELECT COUNT(model___computer_name) FROM table_27765443_2 WHERE cpu_type = "AMD Opteron dual-core 2.6GHz"