NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Boost Clock has increased by 9% (1058MHz vs 975MHz)
Larger VRAM bandwidth (192.3GB/s vs 179.2GB/s)
512 additional rendering cores
AMD Radeon R9 370 1024SP 's Advantages
Released 2 years and 2 months late
Lower TDP (150W vs 195W)