CREATE TABLE table_77680 ("Model number" CLOB, "sSpec number" CLOB, "Frequency" CLOB, "L2 cache" CLOB, "Mult." CLOB, "Voltage" CLOB, "Socket" CLOB, "Release date" CLOB, "Part number ( s ) " CLOB, "Release price  (  USD  ) " CLOB)

What's the voltage for the pentium dual-core e2140?
SELECT "Voltage" FROM table_77680 WHERE "Model number" = 'pentium dual-core e2140'
SELECT "Voltage" FROM "table_77680" WHERE "Model number" = 'pentium dual-core e2140'