Tag Archives: 5420

Exynos 5 Octa demos 8 cores working at once and other feats of CPU strength (video)

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Exynos 5 Octa demos 8 cores working at once, GPU assist and energy efficiency video

Just in case yesterday's news that Samsung is ready to enable new features on its Exynos 5 Octa chips wasn't clear, ARM has published a few demo videos to show what it can do. All three are embedded after the break, and the first one highlights how the Exynos 5 Octa 5420 can activate some or all of its 8 cores to maximize responsiveness while launching and using Quickoffice. As you can see above in the screenshot, all eight cores are activated while launching the app, then unused ones switch off for more efficiency. Another video shows how it runs Angry Birds Rio on just the four Cortex-A7 "LITTLE" side of the CPU, rarely activating any of their more power-hungry A15 friends. The last demo video shows how its Mali-T628 GPU activates to process images faster and more efficiently than the CPU alone can.

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New Exynos 5 Octa: 20 percent more CPU power, over twice the 3D graphics oomph

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New Exynos 5 Octa: 20 percent more CPU power, over twice the 3D graphics oomph

Samsung couldn't help itself last week when it teased a new Exynos 5 Octa system on a chip, and now it's dishing out the full details. The fresh 5420 variant of the SoC is based on Mali-T628 MP6 silicon, packs a quartet of ARM Cortex-A15 cores running at 1.8GHz and four 1.3GHz Cortex-A7s in an ARM big.LITTLE configuration. Seoul claims that the package packs 20 percent more CPU processing punch, and has two times greater 3D graphics power than its predecessor. Dual-channel LPDDR3 at 933MHz gives the processor a screaming memory bandwidth of 14.9 GBps, which lends it full HD WiFi display support. Baked inside is an image compression solution that makes for energy efficient multimedia loading, and squeezes out more hours of use with high-res displays. There's no word on which devices might use the new SoCs, but the chips are already being sampled by Samsung's customers, and mass-production is slated for August.

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