Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_51 (bus_width__bits_ INTEGER, designation VARCHAR)
### Question:
Designation of pc800 has which highest Bus width (bits)?
### Answer:
SELECT MAX(bus_width__bits_) FROM table_name_51 WHERE designation = "pc800"