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NVIDIA today introduced their Tegra 4 a quad-core processor with 72 custom GeForce GPU cores — six times as many as the Tegra 3. The Tegra 4 includes the first quad-core application of ARM’s most advanced CPU core, the Cortex-A15, which Nvidia says delivers 2.6x faster web browsing and breakthrough performance for apps.

Tegra 4 also enables worldwide 4G LTE voice and data support through an optional chipset, the fifth-generation NVIDIA Icera i500 processor, said to be more efficient and 40 percent the size of conventional modems, delivering four times the processing capability of its predecessor. The soft modem, which is the fruit of the company’s purchase of Icera and is utilized with Tegra 4.

Nvidia CEO Jen-Hsun Huang pitted a Nexus 10 tablet, which he called “the fastest tablet in the world today,” against a Tegra 4-based tablet. The two tablets were set to load 25 high-traffic web sites: the Tegra 4 did it in 27 seconds and the Nexus 10 tablet in 50 seconds.

Speeds were similar to the latest iPad. Aanandtech has more Details on NVIDIA’s Tegra 4 & i500. The 5th core is A15, 28nm HPL, UE Category 3 LTE.

Nvidia showed off enhance mobile imaging with the first Always-on HDR camera with features like live HDR preview, instant HDR photos, HDR video, HDR burst, and HDR Flash.

Alongside the introduction of the new Tegra 4 SoC architecture, Nvidia unveiled Project Shield, a codenamed, self-contained, Android-based portable game console capable of connecting to a local PC to run games. The Shield, about the size of an Xbox 360 controller, is a Tegra 4-powered clamshell portable. The fold-out design has a 720p “retinal display,” complete with a custom bass reflex audio system

The Shield will also reportedly be able to play games remotely through Nvidia’s much-discussed cloud-gaming Grid system.

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