Spokane is among cities where Comcast is now offering "Extreme 105 Mbps," making it one of the fastest download Internet options for cable subscribers.
The top speed before was roughly 50 megabits per second.
If ordered with a bundle, the 12-month cost for users is $105 per month. Otherwise it will be $199 per month for standalone service.
Comcast spokesman Walt Neary said the appeal seems strongest among families who have several members involved in serious online gaming.
About 40 million homes nationwide are potentially able to get the upgraded service.
The Federal Commnications Commission has set a goal of 100-Mbps for 100 million U.S. homes by 2020, as a target for increasing the nation's broadband capacity.
Comcast still maintains a 250GB data cap per month, even for anyone using the Exteme 105 service. Users exceeding that cap will be given warnings of possible disconnects.