user: Question: What is the L2 cache with a release date on September 10, 2009, a 128-bit FPU width, and a 12x multi 1?
Columns: ['Model number', 'Frequency', 'L2 cache', 'FPU width', 'Multi 1', 'Socket', 'Release date', 'Order part number']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Athlon II M300', '2000MHz', '2x 512 KB', '64-bit', '10x', 'g Socket S1 3', 'September 10, 2009', 'AMM300DBO22GQ']
SQL:

assistant: SELECT "L2 cache" FROM "Table" WHERE "Release date" = 'September 10, 2009' AND "FPU width" = '128-bit' AND "Multi 1" = '12x';