user: Question: What type of chipset is in the Precision T3400 model with the PCI Express graphics?
Columns: ['Model', 'FSB (MHz)', 'Chipset', 'Memory', 'Graphics']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Precision 330', '400', 'Intel 850', 'Rambus', 'AGP']
SQL:

assistant: SELECT "Chipset" FROM "Table" WHERE "Graphics" = 'PCI Express' AND "Model" = 'Precision T3400';