NVIDIA GeForce GTX 580M 's Advantages
Larger VRAM bandwidth (96.00GB/s vs 80.19GB/s)
NVIDIA GeForce GTX 860M 's Advantages
Released 2 years and 7 months late
Boost Clock1085MHz
More VRAM (4GB vs 2GB)
256 additional rendering cores
Lower TDP (75W vs 100W)