Samsung is thought to be at work developing a quad-core chip to power the Galaxy S III, an addition to the Galaxy smartphone family expected to be unveiled at Mobile World Congress which runs February 27-March 1 in Barcelona, Spain. According to PocketNow, based on the source code at kernel.org, the new chip will be marketed as the Exynos 4412 and will feature four processing cores.

Samsung recently launched the 32-nanomenter Exynos 4212 chip with a dual-core ARM Cortex-A9 processing core clocked at 1.5GHz and ARM’s quad-core Mali-400 GPU. Like Apple’s upcoming A6 chip (said to be manufactured by Samsung) and Nvidia’s Tegra 3 silicon, the rumored Exynos 4412 chip should take advantage of the four cores of the Cortex-A9 processor from ARM Holdings. Its closes competitor, however, will be a 2.5GHz Qualcomm Snapdragon quad-core beast allegedly debuting early next year in the HTC Zeta smartphone.

Unlike the Tegra 3 chip which employs Nvidia’s own GeForce graphics processor or Apple’s A6 that is likely to tap Imagination Technologies’ next-generation PowerVR GPU, the Exynos 4412 could use the recently introduced Mali-T658 graphics unit which delivers up to ten times the graphics performance of the Mali-400 GPU and four times the GPU compute performance of the Mali-T604 GPU.

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