Microsoft quietly released a powerful new version of its laptop

Microsoft Surface BookMicrosoftThe Surface Book.

Microsoft has quietly released two new, and more powerful, versions of the Surface Book and Surface Pro.

The old high-end Book and Pro models have been relegated to second place, after Microsoft added a new 1TB (1,000GB) SSD, an updated sixth generation Intel Core i7 processor, and 16GB of RAM option.

The new models are available in the US and Canada. The Book costs $3,199 (£2,200) and the Pro costs $2,699 (£1,800).

An equivalent MacBook Pro model — with a 1TB SSD, the same CPU, and 16GB of RAM — costs $2,699 (£1,800).

Both Surface models have long battery lives and are light, making them easy to transport. Apple has previously been the king of the powerful yet light ultra-portable market, but it seems Microsoft wants some of the pie.

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