human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Model number, Frequency, L2 cache, FPU width, Multi 1, Socket, Release date, Order part number
###Question: What is the release date of the 2x 512 kb L2 cache with a 11x multi 1, and a FPU width of 128-bit?
gpt
SELECT Release date FROM table WHERE L2 cache = 2x 512 kb AND Multi 1 = 11x AND FPU width = 128-bit