NVIDIA GeForce GTX 870M 's Advantages
Released 6 years and 10 months late
Boost Clock967MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (120.0GB/s vs 22.40GB/s)
1312 additional rendering cores
NVIDIA GeForce 8600M GT 's Advantages
Lower TDP (20W vs 100W)