According to Korean DDaily, the Samsung Galaxy S4 might be featuring the new quad-core Exynos 5450 processor, which is said to be entering test production by the end of this year.
The quad-core Exynos 5450 processor is speculated to have excessive processing power of 2.0 Ghz at each core, which is much faster than that of the quad-core Exynos 4412 processor found in the Galaxy S3. Apart from it’s processing power , there is also rumors earlier on that the Galaxy S4 will be having a 13 megapixels camera, if you could remember.