NVIDIA GeForce GTX 580 Rev. 2 's Advantages
More VRAM (1536GB vs 1024GB)
Larger VRAM bandwidth (192.4GB/s vs 40.10GB/s)
128 additional rendering cores
NVIDIA GeForce GT 730 OEM 's Advantages
Released 3 years and 10 months late
Lower TDP (64W vs 244W)