Samsung Exynos 7880 Advantages
Lower TDP (4W vs 5W)
Samsung Exynos 8895 Advantages
Better graphics card performance FLOPS (0.375 TFLOPS vs 0.0912 TFLOPS )
Larger memory bandwidth (28.7GB/s vs 12.8GB/s)
Higher Frequency (2314MHz vs 1900MHz)
More modern manufacturing process (10nm vs 14nm)