NVIDIA GeForce GTX 680M 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (115.2GB/s vs 14.40GB/s)
960 additional rendering cores
AMD Radeon 530 Mobile 's Advantages
Released 4 years and 10 months late
Boost Clock has increased by 35% (1024MHz vs 758MHz)
Lower TDP (50W vs 100W)