CREATE TABLE table_27765443_2 (cpu_type VARCHAR2, period_of_operation VARCHAR2)

Name the cpu type for june 2005 - april 2009
SELECT cpu_type FROM table_27765443_2 WHERE period_of_operation = "June 2005 - April 2009"
SELECT "cpu_type" FROM "table_27765443_2" WHERE "June 2005 - April 2009" = "period_of_operation"