If there's a theme that has dominated this year's Mobile World Congress then it is that of quad-core. And if one company has prevailed in that bracket then it is undoubtedly Nvidia.

We've seen more Tegra 3 devices announced over the past couple of days than our paella and cerveza-infused brain can recollect at this point, and so it was a surprise to stumble across a pretty nifty looking unannounced Tegra 3 tablet from Toshiba flaunting its wares at Nvidia's temporary Spainsh HQ.

The Toshiba 7.7 not only smashes through games such as Golden Arrow without hesitation thanks to the quad-core power, but also has a jaw-dropping 7.7-inch display that we were told is a 1200x800 AMOLED one.

Not much else is known spec-wise for the tab with a model number AT270, except that its running Android Ice Cream Sandwich, and it has both front and rear-facing cameras.

Like the Toshiba AT200, it's super-thin and it has a lovely silver-textured back. It feels almost weightless in hand and is the perfect size for playing the Tegra 3 optimised gaming titles.

We'll let you know as soon as we hear more about Toshiba's mystery quad-core mini-monster but for now check out our hands-on pictures.