Samsung Galaxy S IV is going to be powered by the Exynos 5 Octa chipset, which features four Cortex-A15 cores clocked at 1.8GHz, four Cortex-A7 cores running at 1.2GHz and PowerVR SGX 544MP3 GPU.
There will be a second version for some markets, which will be powered by the Qualcomm Snapdragon 600 chipset with its 4 Krait 300 cores and Adreno 320 GPU. Both versions will offer LTE connectivity and 2GB of RAM.
Samsung Galaxy S IV will feature a 13 MP sharpshooter, while on the front a 2.1MP camera will take care of video chats and a host of new features that involve eye-tracking and hand-tracking.
... source .... : http://www.gsmarena.com/samsung_galaxy_s_iv_goes_official_with_new_screen_and_cpu-news-5702.php