NVIDIA GeForce GTX 870M 's Advantages
Boost Clock has increased by 5% (967MHz vs 925MHz)
Larger VRAM bandwidth (120.0GB/s vs 72.00GB/s)
704 additional rendering cores
AMD Radeon R9 M365X 's Advantages
Released 1 years and 2 months late
More VRAM (4GB vs 3GB)