NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages
Lower TDP (40W vs 160W)
NVIDIA GeForce GTX 460 X2 's Advantages
Released 3 years and 11 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (115.2GB/s vs 8.000GB/s)
320 additional rendering cores