Nvidia unveils Tegra 4 processor, first quad-core Cortex-A15 chip

LAS VEGAS?Nvidia unveiled its Tegra 4 processor Sunday, a chip that will bring consumers more power in mobile devices and help Nvidia remain competitive in the fast moving mobile market.

The Tegra 4 is based on ARM's quad-core Cortex-A15 processor and also packs in 72 graphics processing unit cores.

"This thing is flooded with GPU cores," said Nvidia CEO Jen-Hsun Huang (above) at a press conference at the International CES.

Those processing cores will provide consumers with faster performance, but pre-launch speculation about the chip had centered on whether portable devices really need more processing power.

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Skateboarder magazine releases fifth Trans-Siberian Railway gallery

Skateboarder magazine recently released another extended gallery of photographer Johnny Mehring's eight-part documentation of a Trans-Siberian Railway trip he did a few years back. In this part of the journey, the crew leaves Russia for Mongolia, which they find to be even shadier than Russia. Click on the photo below to see the rest.

Photo courtesy Skateboarder magazine, Mehring; click on the photo to view the full gallery

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Stuxnet Strikes Again? Not Likely

Iran boasted last week that its malware fighters fended off another attack on its infrastructure by the notorious Stuxnet computer worm. Stuxnet targeted a power plant and some other industries in the southern part of the country, but Iranian computer experts were able to thwart the attack, a provincial civil defense official claimed. The original Stuxnet attack two years was aimed at Iran's nuclear development program.

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iWatches and Bracelets and Shades, Oh My

There have been a few new Apple rumors floating around the last few days, starting with one that claimed Apple was working on an "iWatch" and graduating to wearable computers. Over the course of several years, wearable computing devices could provide some next-generation revenue to the iPhone and iPad business, one such line of speculation goes.

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