SCHEMA:
CREATE TABLE table_name_17 (chipset VARCHAR, model VARCHAR, memory VARCHAR, fsb__mhz_ VARCHAR)
USER:
What is the chipset in the Precision 340 model that has the rambus memory and 400 or 533 FSB (MHz)?

QUERY:
SELECT chipset FROM table_name_17 WHERE memory = "rambus" AND fsb__mhz_ = "400 or 533" AND model = "precision 340"