user: Question: What's the voltage for the Pentium Dual-Core E2140?
Columns: ['Model number', 'sSpec number', 'Frequency', 'L2 cache', 'Mult.', 'Voltage', 'Socket', 'Release date', 'Part number(s)', 'Release price ( USD )']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Pentium Dual-Core E2140', 'SLA3J(L2)SLA93(M0)SLALS(G0)', '1.6 GHz', '1 MB', '8×', '1.162–1.312V', 'LGA 775', 'June 3, 2007', 'HH80557PG0251M', '$74']
SQL:

assistant: SELECT "Voltage" FROM "Table" WHERE "Model number" = 'Pentium Dual-Core E2140';