CREATE TABLE table_22632 ("Model number" TEXT, "sSpec number" TEXT, "Frequency" TEXT, "Turbo" TEXT, "Cores" FLOAT, "L2 cache" TEXT, "L3 cache" TEXT, "I/O bus" TEXT, "Mult." TEXT, "Memory" TEXT, "Voltage" TEXT, "TDP" TEXT, "Socket" TEXT, "Release date" TEXT, "Part number ( s ) " TEXT, "Release price  (  USD  ) " TEXT)

When by80607002529af is the part number and september 2009 is the release date what is the l2 cache?
SELECT "L2 cache" FROM table_22632 WHERE "Release date" = 'September 2009' AND "Part number(s)" = 'BY80607002529AF'
SELECT "L2 cache" FROM "table_22632" WHERE "Part number(s)" = 'BY80607002529AF' AND "Release date" = 'September 2009'