CREATE TABLE table_16906 ("Model number" TEXT, "sSpec number" TEXT, "Frequency" TEXT, "L2 cache" TEXT, "FSB" TEXT, "Mult." TEXT, "Voltage" TEXT, "TDP" TEXT, "Socket" TEXT, "Release date" TEXT, "Part number ( s ) " TEXT, "Release price  (  USD  ) " TEXT)

What is the frequency of the model with part number lf80537gf0411m?
SELECT "Frequency" FROM table_16906 WHERE "Part number(s)" = 'LF80537GF0411M'
SELECT "Frequency" FROM "table_16906" WHERE "Part number(s)" = 'LF80537GF0411M'