NVIDIA GeForce GT 520 PCIe x1 's Advantages
Released 2 years and 9 months late
More VRAM (1024GB vs 896GB)
Lower TDP (29W vs 182W)
NVIDIA GeForce GTX 260 Rev. 2 's Advantages
Larger VRAM bandwidth (111.9GB/s vs 14.40GB/s)
144 additional rendering cores