comcastComcast is doubling the Internet speeds for customers in Washington state who subscribe to its Blast! and Extreme 50 offerings. The changes are being made at no additional cost, part of an ongoing plan by the state’s largest cable company to boost speeds. The company also said that it is increasing speeds for its Performance plan, boosting those speeds by 30 percent.

Here’s a breakdown of the changes:

—The Blast! plan is increasing download speeds up to 50 Mbps (formerly 25 Mbps) and upload speeds up to 10 Mbps (formerly 4 Mbps). Those plans cost $75 per month as a standalone offering. ($59 bundled)

—The Extreme 50 plan is increasing download speeds up to 105 Mbps (formerly 50 Mbps) and upload speeds up to 20 Mbps (formerly 15 Mbps). Those plans cost $115 per month as a standalone offering. ($100 bundled)

—The Performance plan is increasing download speeds up to 20 Mbps (formerly 15 Mbps) and upload speeds up 4 Mbps (formerly 2 Mbps). Those plans cost $65 per month as a standalone offering. ($49 bundled).

In order to see the changes, Comcast customers will need to power down their modems. (See explanation here). Some customers also may need a new cable modem.

“As customer demands and technology evolve, we continue to increase our broadband speeds to deliver the best, fastest and most reliable Internet experience possible for our customers,” said Len Rozek, senior vice president of Comcast’s Washington market. Comcast has 1.1 million customers in the state.

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