CREATE TABLE table_10926 ("Model" TEXT, "FSB  ( MHz ) " TEXT, "Chipset" TEXT, "Memory" TEXT, "Graphics" TEXT)

What is the chipset in the Precision 340 model that has the rambus memory and 400 or 533 FSB (MHz)?
SELECT "Chipset" FROM table_10926 WHERE "Memory" = 'rambus' AND "FSB (MHz)" = '400 or 533' AND "Model" = 'precision 340'
SELECT "Chipset" FROM "table_10926" WHERE "FSB (MHz)" = '400 or 533' AND "Memory" = 'rambus' AND "Model" = 'precision 340'