With the introduction of the Galaxy Alpha, Samsung launched its first SoC based on the 20nm manufacturing process, the octa-core Exynos 5430. The reduction in die size makes the SoC much more efficient, with Samsung claiming a decrease in power consumption by as much as 25 percent less when compared to current-generation SoCs manufactured using a 28nm process.
On the CPU side of the things, the Exynos 5430 features the same quad-core Cortex A15/quad-core Cortex A7 configuration used by Samsung in earlier Exynos octa-core processors. This time around, the Cortex A15 cores are clocked at 1.8GHz with the Cortex A7 cores at 1.3GHz. The Mali T628MP6 GPU used on the Exynos 5430 is same as that on the Exynos 5422, but comes with a slight increase in frequency to 600MHz from 533MHz.
The also supports big.LITTLE HMP (Heterogeneous Multi-Processing), which means that all eight cores can be active at the same time. As for display resolutions, the SoC can easily handle WQHD (2560×1440) and WQXGA (2560×1600). Another new feature is a dedicated Cortex A5 processor for audio decoding, which Samsung calls "Seiren", a Multi Format Codec and a HEVC (H.265) hardware decoder along with dual ISPs.
With the Exynos 5430 signifying Samsung's shift to a 20nm manufacturing process, it is possible that the processor heavily rumored to be featured in the Galaxy Note 4, the Exynos 5433, will also be based on a similar manufacturing process. We should have more information at the IFA next month.
Source: Samsung Exynos