A 1KG Ultrabook is an engineering feat. The Toshiba Z830, at 1.1KG still surprises 2 years after launch. Since then though we haven’t seen many attempt to break the 2.2 pound mark. Only the NEC Lavie Z, an expensive Asia-only model, and the almost unknown Inhon Blade Carbon have launched in the 13.3” bracket. The Sony Vaio Pro 13 is a far more globally available product though. It’s not only lightweight, it offers a FullHD Sony Triluminous touchscreen, a good set of specifications and, although the battery is smaller than your average Ultrabook battery of 2012, good battery life.  The Haswell CPU is responsible for that, and some good performance figures. At the extremes of tight engineering one often finds a few issues of note and that’s the case with the Sony Vaio Pro 13. You’ll have to accept a few of those if you want the lightest 13.3-inch Haswell-based touch Ultrabook on the market. Read more in the full review below.

Releasing a 1st-generation Ultrabook while the excitement builds to 2nd-gen Ultrabooks based on Ivy Bridge may, at first, seem a stupid move but when it’s a unique product like the new LuvBook X from Mouse Computers in Japan, it may not make much difference. The LuvBook X is going to be the second 11.6” Ultrabook on the market, the first with a carbon-fiber body and the first to break 1KG.

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Available with Core i3 (1.3Ghz non-Turbo) and Core i5 (1.6Ghz, Turbo-enabled) the Samsung 900X1B (Series 9 range) is a stylish alternative to the ASUS UX21. It’s been around for a few months and in theory, it’s not an Intel Ultrabook but apart from slightly slower quick-boot and a missing TPM module (we are told) it’s an Ultrabook! Later this week we’ll be testing it and comparing it to our ASUS UX21 experiences.

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