NVIDIA GeForce GTX 580 Rev. 2 's Advantages
Larger VRAM bandwidth (192.4GB/s vs 28.80GB/s)
192 additional rendering cores
AMD Radeon R7 240 OEM 's Advantages
Released 2 years and 5 months late
Boost Clock780MHz
More VRAM (2GB vs 1GB)
Lower TDP (50W vs 244W)