user: Question: What max processor has a maximum memory of 256 GB?
Columns: ['Model', 'RU', 'Max processors', 'Processor frequency', 'Max memory', 'Max disk capacity', 'GA Date']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['M3000', 2.0, '1× SPARC64 VII or VII+', '2.52, 2.75GHz (VII) or 2.86GHz (VII+)', '64 GB', '4× 2.5" SAS', 'October 2008 (VII), April 2011 (VII+)']
SQL:

assistant: SELECT "Max processors" FROM "Table" WHERE "Max memory" = '256 GB';