CREATE TABLE table_46638 ("Model Number" CLOB, "Frequency" CLOB, "L2-Cache" CLOB, "Front Side Bus" CLOB, "Multiplier" CLOB, "Voltage" CLOB, "Socket" CLOB)

What is the Voltage for Model Number c3 866?
SELECT "Voltage" FROM table_46638 WHERE "Model Number" = 'c3 866'
SELECT "Voltage" FROM "table_46638" WHERE "Model Number" = 'c3 866'