NVIDIA GeForce GTX 950M Mac Edition 's Advantages
Released 4 years and 6 months late
Boost Clock1124MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (28.80GB/s vs 25.60GB/s)
544 additional rendering cores
NVIDIA GeForce GT 420M 's Advantages
Lower TDP (23W vs 75W)