NVIDIA GeForce GTX 860M 's Advantages
Released 2 years and 6 months late
Boost Clock1085MHz
More VRAM (4GB vs 2GB)
Lower TDP (75W vs 100W)
AMD Radeon HD 6990M 's Advantages
Larger VRAM bandwidth (115.2GB/s vs 80.19GB/s)
480 additional rendering cores