Could a speed test like this be in your future?

Comcast is entering the gigabit broadband business and is guaranteeing customers willing to pay for the experience will not be subjected to a usage cap.

Comcast’s Gigabit Pro will arrive next month in select Atlanta neighborhoods located within one-third of a mile of Comcast’s fiber backbone network in the city. Promising 2,000/2,000Mbps unlimited fiber-to-the-home service (at a yet to be disclosed price), Comcast hopes to upstage Google Fiber and AT&T U-verse with GigaPower which are both working to upgrade Atlanta to 1,000Mbps service.

“We’ll first offer this service in Atlanta and roll it out in additional cities soon with the goal to have it available across the country and available to about 18 million homes by the end of the year,” said Marcien Jenckes, executive vice president of consumer services for Comcast. “Gigabit Pro is a professional-grade residential fiber-to-the-home solution that leverages our fiber network to deliver 2Gbps upload and download speeds. We’ve spent a decade building a national fiber backbone across 145,000 route miles of fiber. This new service will be available to customers that are within close proximity to our fiber network.”

Comcast says it will price Gigabit Pro below the cost of its current Extreme 505 (505/100Mbps) service, which costs $399.95 a month, not including the $250 technology activation fee, $250 installation fee, and three-year contract with up to a $1,000 early cancellation penalty. It seems unlikely Comcast’s price for 2Gbps will hover near Google and AT&T’s usual $70 fee for 1Gbps service. Comcast has to bring fiber from its nearest fiber node to a customer’s home and install commercial-grade equipment capable of handling 2Gbps. Existing Extreme 505 customers will be upgraded to 2Gbps for no additional charge.

Comcast officials have repeatedly stressed its 2Gbps tier will be exempt from usage caps, which makes it the only unlimited residential broadband offering available to Comcast customers in Atlanta. Other residential customers are now subjected to a 300GB usage cap with $10/50GB overlimit fee.

Marketing Comcast’s 2Gbps offering may prove tricky because potential customers must live close to pre-existing Comcast fiber. If you don’t qualify, Comcast won’t pay to bring fiber infrastructure your way. Those outside of the fiber service area will continue to be serviced by standard coaxial cable. Comcast will wait for DOCSIS 3.1 to be officially available before deploying more speed upgrades in 2016. It promises to boost speeds up to at least 1Gbps if demand warrants.

The sudden announcement Comcast was willing to ditch part of its HFC coax network in favor of fiber, almost unprecedented for a major cable operator, and boost speeds beyond a gigabit may also be used to boost its chances of winning approval of its merger deal with Time Warner Cable. TWC Maxx, Time Warner’s own speed upgrade effort, only raises Internet speeds to a maximum of 300Mbps. Comcast had promised to upgrade Time Warner Cable customers’ speeds as part of the merger, but TWC Maxx offered most customers better speeds than what Comcast offered most of its residential customers.

Article was updated to correct the upload speed for the 505Mbps Comcast tier. It is now evidently 100Mbps, up from 65Mbps.