The best tablets of CES 2014

On stage at CES today, Jonney Shih proclaimed his company's new Transformer the world's first 4-in-1 device. By that he meant that it's a Windows laptop and tablet as well as an Android laptop and tablet. This new 13.3-inch slate transforms both physically and virtually thanks to the company's new dual-OS setup. A quick switch of three or four seconds is all that's required to morph you from the Windows 8 environment into the familiar Android UI and vice versa.

The Transformer Book Duet is powered by Intel's Haswell CPU, up to the Core i7 models, and comes with storage starting at 64GB, but extending beyond a terabyte if you're willing to pay the price. The larger storage options will be housed within the keyboard dock, which also expands the device's connectivity options with extra ports.

Back at Computex in June, Asus introduced its Transformer Book Trio — a computer that could function as both a laptop and tablet and dual-booted between Windows 8 and Android. Now, the company's announcing a new version with a similar mission: the Transformer Book Duet TD300 is a convertible laptop / tablet hybrid that can dual boot between Windows 8.1 and Android 4.1 Jelly Bean.

Beyond Asus' earlier effort, Samsung tried this dual-boot trick last year with its Ativ Q, though the new Asus model looks more like a traditional ultrabook at first glance. It has the standard folding form factor rather than the sliding keyboard that Samsung used and looks quite a bit like Asus’ other laptops. Its 13.3-inch multitouch display features a solid 1,920 x 1,080 resolution; it doesn’t quite match the Ativ Q but should still be solid in most normal circumstances. That 13.3-inch form factor makes Asus' new model a good bit bigger than the older Transformer Book Trio.

Nvidia's big announcement for CES 2014 was, as expected, the fifth generation of its Tegra mobile processor. It's such a momentous step forward for the company, however, that it's getting a whole new designation in being called the Tegra K1. That's because it implements the Kepler architecture, which underpins Nvidia's desktop graphics card lineup, meaning you're literally getting desktop-class graphics technology in your mobile processor.

To demonstrate the prowess of the new K1, Nvidia has set up a number of customized Tegra Note 7 prototypes around the periphery of its press event. They include demos of the custom build of Trine 2, the highly impressive Digital Ira real-time face-rendering demo, and even a version of Serious Sam 3 — all running on the new K1.