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At £340, the Asus Transformer Book T100 must be the cheapest laptop-tablet hybrid weve seen. At the press of a button, the T100TAs 10.1in screen detaches from its tiny keyboard dock so that you can use it as a tablet. At 550g the T100TAs screen is just 81g heavier than an iPad Air, so its light enough to hold for long periods, and its rounded edges are both comfortable and easy to grip.
The T100TA is almost twice as heavy when the screen is combined with the keyboard dock, but is still highly portable and easy to carry around. Its glossy plastic chassis feels a bit cheap to the touch, but its surprisingly well made as we didnt see any signs of flex in the tablets back panel.
The T100 has few ports, though, with just a single USB3 port on the keyboard dock, a micro SD card reader, micro USB and HDMI ports, and a combined headphone and microphone jack. The T100TA has 32GB of storage space, but only 28.2GB was available for use, so you may want to pay more for the 64GB version if you need to store a lot of files. As the T100TA runs the full version of Windows 8.1 you can install any program you like on it, which makes it look better value in comparison to Windows RT devices such as the Microsoft Surface 2.
The T100TA also uses one of Intels latest Baytrail Atom processors, which gives it a huge performance boost compared to last years Atom-based tablets. The T100TAs 1.3GHz Intel Atom Z3740 still isnt suited to running lots of programs at once, but it still scored an impressive 22 overall in our multimedia benchmarks. Its almost as quick as the Sandy bridge-based Asus X550C, which scored 24 overall.
Its no good for playing 3D games, but less demanding games from the Windows 8 Store should still work fine. Titles such as Jetpack Joyride played smoothly, for example.
The T100TAs small keyboard felt a little cramped at times, but its pleasant to type on once you get used to its size and the spacing of its compact keys. The tiny all-in-one touchpad, on the other hand, proved more fiddly to use. It was fine for moving the cursor across the screen and for clicking files and folders, but we found multi-touch gestures such as pinch-zooming difficult to control.
This isnt too much of a problem, though, as the responsive 10-point touchscreen more than makes up for the touchpad. The displays 1,366×768 resolution made graphics and text look sharp and we didnt have any problem opening and closing internet tabs or minimising windows when we tapped the screen with our finger. The screens image quality was good, too, with colours looking deep and vibrant.
The displays contrast levels were also excellent, and we measured a huge contrast ratio of 1,036:1. Combined with the screens wide viewing angles, this meant we could see images clearly from almost any position, and our high contrast test photos were packed full of detail. Its easily one of the best displays weve seen on a laptop at this price, and while some blacks were a little too deep to make out the finer shadow detail in a few of our night shots, it wasnt enough to detract from the screens overall picture quality.
Even more impressive is the T100TAs huge battery life. The T100TA lasted a stunning 11 hours and 49 minutes in our light use battery test with the screen set to half brightness, which is only slightly less time than the Microsoft Surface Pro 2s score of 11 hours and 51 minutes. Youll be able to use the T100TA nearly all day without having to return it to the mains. Just be aware that the T100TA takes quite a long time to charge because its powered by micro USB instead of a traditional power adaptor.
With so many outstanding features, the Asus Transformer T100TA has redefined what we should expect from a £350 laptop. With its improved Atom processor, great screen and long battery life, it sets a new standard for the budget touchscreen hybrid and deservedly wins a Budget Buy award.
