NVIDIA GeForce GTX 770M 's Advantages
Boost Clock has increased by 5% (797MHz vs 758MHz)
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (96.19GB/s vs 12.80GB/s)
768 additional rendering cores
NVIDIA GeForce GT 720M 's Advantages
Released 7 months late
Lower TDP (33W vs 75W)