NVIDIA GeForce GTX 870M 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (120.0GB/s vs 48.00GB/s)
832 additional rendering cores
AMD Radeon E9172 MXM 's Advantages
Released 3 years and 7 months late
Boost Clock has increased by 26% (1219MHz vs 967MHz)
Lower TDP (35W vs 100W)