Comcast’s gigabit cable has a data cap—unless you sign 3-year contract

Comcast is mailing this flyer to Atlanta residents. (credit: TheBen91)

Comcast has begun selling its new gigabit cable service in parts of Atlanta, and the company is heavily pushing customers toward three-year contracts as it tries to fend off a challenge from Google Fiber.

Customers will be able to buy the Internet service for $70 a month and not face any data caps if they sign a three-year deal that has an early termination fee. Without a contract, customers would have to pay $139.95 a month and face a 300GB-per-month data cap.

Customers on the no-contract option can upgrade to unlimited data for an extra $35 a month. Thus, Comcast's gigabit Internet service with unlimited data costs $70 per month with a contract and about $175 without. (A DSLReports article described the data cap details today, and Comcast confirmed them to Ars.)

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