human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Code name, Brand name, Model (list), Frequency, Cores/Threads, Max Memory Speed
###Question: List the number of cores for ddr3-1333 with frequencies between 2.66-2.8ghz.
gpt
SELECT Cores/Threads FROM table WHERE Max Memory Speed = DDR3-1333 AND Frequency = 2.66-2.8GHz