NVIDIA GeForce GTX 780M 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)
1152 additional rendering cores
NVIDIA GeForce 930M 's Advantages
Released 1 years and 10 months late
Boost Clock has increased by 18% (941MHz vs 797MHz)
Lower TDP (33W vs 122W)