If your head's spinning from the buckets of chip splooge that's shot out over the past couple days, we don't blame you. There's been a new mobile chip launched or announced by every major player in the biz (Intel, AMD, Nvidia and Via), so no wonder it's all sticky and running together. Don't worry, here's a quick guide to what matters, who makes it, and what kind of stuff you'll see it in.

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Nvidia talks a big game about how awesome its mobile Tegra processors are, but paper muscles tear when wet. They've got some videos showing that there is at least some meat behind the pulp. Above the fold is Quake III running at 35fps with anti-aliasing turned on, while below is HD video output at 720p via HDMI out, and their 3D UI, which has a coverflow clone, and some nice 3D navigation stuff. These are undoubtedly optimised, but still some impressive voodoo.

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Nvidia's launch of its Tegra processors makes World War Mobile official, with multiple major players cramming serious juice into tiny, ultra efficient chips for a range of mobile devices. Nvidia is calling Tegra "the world's first computer on a chip for mobile visual computers" which squeezes a CPU, GPU, system memory and more onto a dime-sized chip that Nvidia says is 10x more efficient than the competition, with up to 30 hours of HD video playback (WSJ says 26). It's for so-called mobile internet devices that fall between smartphones and subnotebooks (like Nokia's N810), so it's taking on the lowest end of Intel's Atom chips, though we'll have to see how it fares head-to-head.

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