NVIDIA GeForce GTX 870M 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (120.0GB/s vs 28.80GB/s)
704 additional rendering cores
NVIDIA GeForce GTX 950M Mac Edition 's Advantages
Released 1 years late
Boost Clock has increased by 16% (1124MHz vs 967MHz)
Lower TDP (75W vs 100W)