The Rockchip RK3188, Nvidia Tegra 3 and Samsung Exynos 4412 are the 3 most widely used SoC solutions. The Rockchip is the least known company between the rest of the two but shall not be under estimated. All the three processors are quad cores and based on ARM Cortex A9 architecture. GPU being used in Tegra 3 is GeForce ULP and ARM Mali 400 handles graphics in Rockchip RK3188 and Exynos 4412. Here is their benchmark comparison.
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Nvidia Tegra 3 is the oldest amongst them and has computing power of 10 GFLOPS. Samsung’s Exynos 4412 that is being used Galaxy Note 2 and Note 8.0 yields 17.6 GFLOPS while the Rockchip RK3188 is the strongest between all of them yielding 24 GFLOPS.