SCHEMA:
CREATE TABLE table_24018112_1 (cores_threads VARCHAR, max_memory_speed VARCHAR, frequency VARCHAR)
USER:
List the number of cores for ddr3-1333 with frequencies between 2.66-2.8ghz.

QUERY:
SELECT cores_threads FROM table_24018112_1 WHERE max_memory_speed = "DDR3-1333" AND frequency = "2.66-2.8GHz"