NVIDIA GeForce GTX 680M 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (115.2GB/s vs 48.06GB/s)
960 additional rendering cores
NVIDIA GeForce MX150 's Advantages
Released 4 years and 11 months late
Boost Clock has increased by 102% (1532MHz vs 758MHz)
Lower TDP (25W vs 100W)