NVIDIA GeForce 8800 GS Mac Edition 's Advantages
Larger VRAM bandwidth (51.14GB/s vs 14.40GB/s)
16 additional rendering cores
NVIDIA GeForce GT 520 PCI 's Advantages
Released 3 years and 3 months late
More VRAM (1024GB vs 512GB)
Lower TDP (29W vs 105W)