CREATE TABLE table_name_71 (voltage VARCHAR, turbo VARCHAR, cores VARCHAR, release_date VARCHAR)

What is the voltage when there are 2 cores, turbo is 5/8 and the release date is September 2010?
SELECT voltage FROM table_name_71 WHERE cores = "2" AND release_date = "september 2010" AND turbo = "5/8"
SELECT "voltage" FROM "table_name_71" WHERE "2" = "cores" AND "5/8" = "turbo" AND "release_date" = "september 2010"