The Z830 is 8.3mm at its thinnest point, and 1.12kg in weight. This places it firmly within the Intel-defined ultrabook category, as it is lighter and thinner than some rivals, such as the Asus UX31 Zenbook or HP Folio 13. It certainly felt light enough in ZDNet UK's limited testing.

In comparison with other recent new ultrabooks, such as the HP Folio, the Z830 starts from a more expensive base price. The Folio is expected to cost from £849 when it launches in February 2012, but comes with a 1.6GHz Core i5-2467M processor.

The Portege does have a cheaper base price than some competitors, such the Asus UX31 Zenbook, though that Asus model ships with a 1.8GHz Core i7 processor as standard. The Folio and the UX31 offer the same level of RAM and SSD storage. However, the Portege Z830 is lighter than both.

Upgrading the Portege Z830's CPU to an Intel Core i5-2557M takes the price to £1,099.

The ultrabook, which omits an optical drive to keep the weight and size down, comes with two USB 2.0 inputs, one USB 3.0 input, VGA- and HDMI-out, and an SD card reader. It also has Bluetooth 3.0 and a 1.3-megapixel web camera for video calling.

Toshiba has placed the speakers on the Z830 on the forward edge of the outside shell of the device (circled), to improve audio performance when it is used on a lap rather than a table.

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