CREATE TABLE table_3723 ("Model Number" TEXT, "Frequency" TEXT, "L2 Cache" TEXT, "HT" TEXT, "Mult. 1" TEXT, "Voltage" TEXT, "TDP" TEXT, "Socket" TEXT, "Release date" TEXT, "Order Part Number" TEXT)

What are the possible multipliers for 1900MHz processors?
SELECT "Mult. 1" FROM table_3723 WHERE "Frequency" = '1900MHz'
SELECT "Mult. 1" FROM "table_3723" WHERE "Frequency" = '1900MHz'