Samsung Galaxy S IV is leaks with following Specifications
Exynos 5 Octa 5410 chipset with a CPU running at 1.8GHz, 2GB of RAM and a PowerVR SGX 544MP GPU, Full HD 1080p 4.99" Screen, providing a pixel density of 441 ppi and 13MP Camera with 1080p video recording, Android 4.2 will run on out of box. Exynos Octa chip on the Galaxy S IV supports GSM, WCDMA as well as LTE networks.