CREATE TABLE table_name_80 (core__number INTEGER, part_number_opn_ VARCHAR(255), tdp__w_ VARCHAR(255))
What is the sum of core# with a part number of osa242cep5au and TDP greater than 82.1?
    
SQL: SELECT SUM(core__number) FROM table_name_80 WHERE part_number_opn_ = "osa242cep5au" AND tdp__w_ > 82.1