Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_97 (chipset VARCHAR, graphics VARCHAR, model VARCHAR)

### Question ###
What type of chipset is in the Precision t3400 model with the PCI Express graphics?

### Accurate SQL ###

SELECT chipset FROM table_name_97 WHERE graphics = "pci express" AND model = "precision t3400"