NVIDIA GeForce GTX 780 Ti 's Advantages
Larger VRAM bandwidth (336.6GB/s vs 48.00GB/s)
2240 additional rendering cores
AMD Radeon 550X 640SP 's Advantages
Released 4 years and 5 months late
Boost Clock has increased by 15% (1071MHz vs 928MHz)
More VRAM (4GB vs 3GB)
Lower TDP (50W vs 250W)