user: Question: What is GPU Frequency, when Model Number is Atom N435?
Columns: ['Model number', 'sSpec number', 'Frequency', 'GPU frequency', 'L2 cache', 'I/O bus', 'Memory', 'Voltage', 'Socket', 'Release date', 'Part number(s)']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Atom N435', 'SLC4C(A0)', '1.33 GHz', '200 MHz', '512 KB', 'DMI', '1 × DDR2-667 1 × DDR3-800', '0.8–1.175V', 'FC-BGA 559', 'June 2011', 'AU80610007533AA']
SQL:

assistant: SELECT "GPU frequency" FROM "Table" WHERE "Model number" = 'Atom N435';