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Samsung outs first 20nm octa-core chip to debut inside the Galaxy Alpha

The Exynos 5430 is 25 percent more power efficient over its predecessor
Fri Aug 15 2014, 11:37
Samsung Exynos 5 Octa Processor

SAMSUNG has taken the wraps off its first 20nm octa-core mobile processor, the Exynos 5430.

The Korean firm's latest chip is an eight-core processor featuring four ARM Cortex-A15 CPU cores and four Cortex-A7 cores fabbed using a new 20nm process rather than the older 28nm fab process. Being fabbed on a smaller die yields a decrease in power consumption, so devices running the chip should see longer battery life.

Samsung claims the Exynos 5430 smaller die size means its 25 percent more power efficient than previous models while offering higher performance.

Samsung said, "With four powerful ARM cortex-A15 cores at 1.8GHz and four efficient Cortex-A7 cores at 1.3GHz of big.little HMP processing, [the] Exynos 5430 processor is ready for users' unlimited desires for life-enriching mobile experiences."

It seems those "life enriching mobile experiences" that Samsung is referring to includes high-resolution viewing with longer battery life in future devices, as the firm said the new chip now supports WQHD 2560x1440 and WQXGA 2560x1600 resolutions. This is achieved by using hibernation display and Mobile Image compression (MIC), according to the Korean firm.

"Adaptive hibernation display technology with Mobile Industry Processor Interface (MIPI) command mode (CMD), orders and controls required tasks to Display Driver IC(DDI), reducing the power consumption when the display on screen updates," Samsung said.

"In addition, MIC compresses the data by half when transferring pictures and multimedia content from the AP to display, thereby maximizing usage hours when web browsing or running multimedia apps which require frequent screen refreshes."

The processor also allows users to watch multimedia content on UHD TVs through an HDMI interface - enabled by Multi Format Codec (MFC) including H.265 (HEVC) decoder - as the Exynos 5430 processor is equipped with a dual Image Signal Processor (ISP) and 17GBps of memory bandwidth to improve multimedia experiences on mobile devices.

The Samsung Galaxy Alpha will be the first smartphone to feature the Exynos 5430 processor when the handset ships in September, hence Samsung's decision to use an 1860mAh battery in the deice instead of a larger battery like the one used in the Galaxy S5. µ


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