NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages
Lower TDP (40W vs 95W)
NVIDIA GeForce 9600 GT Mac Edition 's Advantages
Released 1 years and 8 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (17.02GB/s vs 8.000GB/s)
48 additional rendering cores