NVIDIA GeForce GTX 780 6 GB 's Advantages
Released 6 years and 8 months late
Boost Clock902MHz
More VRAM (6GB vs 256GB)
Larger VRAM bandwidth (288.4GB/s vs 4.256GB/s)
2304 additional rendering cores
ATI Radeon X1550 PCI 's Advantages
Lower TDP (27W vs 250W)