CREATE TABLE table_65221 ("Model number" TEXT, "sSpec number" TEXT, "Cores" TEXT, "Frequency" TEXT, "Turbo" TEXT, "L2 cache" TEXT, "L3 cache" TEXT, "GPU model" TEXT, "GPU frequency" TEXT, "Socket" TEXT, "I/O bus" TEXT, "Release date" TEXT, "Part number ( s ) " TEXT, "Release price  (  USD  ) " TEXT)

What's the part number of the processor that has an 1.8 ghz frequency and 2 256 kb L@ Cache?
SELECT "Part number(s)" FROM table_65221 WHERE "L2 cache" = '2 × 256 kb' AND "Frequency" = '1.8 ghz'
SELECT "Part number(s)" FROM "table_65221" WHERE "Frequency" = '1.8 ghz' AND "L2 cache" = '2 × 256 kb'