We take a look through some of our favourite examples.

TheSeries 5is a 13-inch chap with an Intel Core i5 processor stuffed inside.

It’s not the thinnest of the ultrabooks, nor the lightest.

It offers a traditional hard drive rather than the faster and less power-hungry solid state drives.

We’re hoping for those reasons it’s going to be cheap.

TheSeries 9is the uprade to the originalSeries 9we were so keen on last year.

Samsung claims that this new guy isn’t an ultrabook, but really it is.

At 1.16kg, it’s lighter too.

Except that it isn’t one.

Don’t you dare make that mistake again.

It’s an unusual look but one that we quite like.

LG is back in the laptop game, this time with theZ330ultrabook.

If you like bare expanses of metal, you’ll be right at home.

The machine is every bit as thin and light as most of the other ultrabooks.

With a range of Intel Core iSeries processors stuffed inside, it should be just as powerful too.

Last up is Dell’s first stab at an ultrabook with the XPS 13.

At its thinnest edge it’s only 6mm, so it’s rather slim.