Comcast revs up Internet speeds for some customers.

Nearly all of Comcast’s customers in California, Kansas, Missouri, and Texas will be receiving increased Internet speeds.

Comcast said it increased the speed of the three Xfinity Internet tiers that it offers: "Performance" is now 50 Megabits per second (Mbps), up from 25 Mbps; "Blast" is now 105 Mbps instead of 50 Mbps; and "Extreme 105" has increased to 150 Mbps. Comcast will alert customers if they need to upgrade their Comcast hardware to receive the faster Internet speeds.