NVIDIA GeForce GTX 555 OEM 's Advantages
Larger VRAM bandwidth (91.87GB/s vs 28.80GB/s)
AMD Radeon R7 240 's Advantages
Released 2 years and 5 months late
Boost Clock780MHz
More VRAM (2GB vs 1024GB)
32 additional rendering cores
Lower TDP (30W vs 150W)