NVIDIA GeForce GTX 780 6 GB 's Advantages
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (288.4GB/s vs 48.06GB/s)
1920 additional rendering cores
NVIDIA GeForce GT 1030 's Advantages
Released 3 years and 8 months late
Boost Clock has increased by 63% (1468MHz vs 902MHz)
Lower TDP (30W vs 250W)