The Galaxy Alpha announcement was centered around the handset’s new design language and features, little emphasis was put on its innards or the new Exynos 5 Octa SoC under the hood. – Samsung apparently saved the best for last and has finally announced the Exynos 5430 today!
The new Exynos SoC is the world’s first chip to be built on the 20nm HKMG (High-k metal gate) process, the die shrink essentially means that Samsung was able to crank more transistors into a limited die area while reducing the reducing the power usage by around 25%, thus bringing down the TDP of the SoC itself.
Other than that, the SoC features virtually the same big.LITTLE architecture with two core islands, i.e four Cortex-A15 and A7s at 1.8GHz and 1.3GHz respectively, the major difference here is that Samsung opted for the r3p3 Cortex-A15 core revision which brings improved clock/power gating and thus better overall power management. The Exynos 5430 however retains the same ISP (Image Signal Processor) featured in the Exynos 5422. The bundled Mali-T628MP6 will be clocked at up to 600MHz and will support resolutions up to 2560×1440 (WQHD) and 2560×1600 (WQXGA).
Other main additions include a Cortex A5 co-processor dubbed ‘Seiren’ which replaces Samsung’s own Samsung Reprogrammable Processor (SRP) for audio decoding. There’s also an Exynos Modem 303 which supports LTE CAT6, along with a new HEVC (H.265) block on the SoC, this will allow devices using the chip the ability to process 4K content effortlessly.